Backgammon FAQ

 From damish@ll.mit.edu Fri Sep 23 00:29:04 1994

Newsgroups: rec.games.backgammon,rec.answers,news.answers

From: damish@ll.mit.edu (Mark Damish)

Subject: Backgammon --- Frequently Asked Questions. [monthly]

Followup-To: rec.games.backgammon

Summary: This posting contains answers to questions about the game of

         backgammon. It also contains resources pertaining to the

         game. It should be read by anyone interested in backgammon,

         especially those posting to the rec.games.backgammon news group.

Originator: damish@ll.mit.edu (Mark Damish)

Keywords: backgammon FAQ

Supersedes: <1994Aug15.163418.8287@ll.mit.edu>

Reply-To: damish@ll.mit.edu (Mark Damish)

Organization: MIT Lincoln Laboratory

Date: Thu, 15 Sep 94 16:23:45 GMT


Archive-name: games/backgammon-faq

Posting-frequency: Monthly, around the 13th of each month.

Last-modified: September 1994

Version: 9409 



Backgammon --- Frequently Asked Questions.

******************************************



CONTENTS

========


Section 0: FORE FAQ

+++++++++++++++++++


Definition , Editor , Purpose , Contributions , Availability, 

Disclaimer , Editorial , Changes Gratitude , and News . 


Section A: ESSENTIALS

++++++++++++++++++++++


 o A1. What is backgammon? 

 o A2. What are the basic rules of the game? 

    o Backgammon Equipment 

    o The backgammon board 

    o Object of the game 

    o Starting the game 

    o Moving your men 

    o Doublets 

    o Making points 

    o Prime 

    o Blots 

    o Closed board 

    o Compulsory move 

    o Bearing off 

    o Gammon and Backgammon 

    o Cocked dice 

 o A3. What is the doubling cube for? 

 o A4. What is the Crawford rule? (Why won't FIBS let me double?) 

 o A5. What is the Jacoby rule? 

 o A6. What is the Holland rule? 

 o A7. What are those critters --- Beavers, raccoons? 

 o A8. What is a Chouette? 


Section B: ELECTRONIC BACKGAMMON: VS OTHER HUMANS

+++++++++++++++++++++++++++++++++++++++++++++++++


 o B1. What is FIBS? 

 o B2. What is the Internet and how do I get onto it? (From OK.FAQ) 

 o B3. Are there any GUI's for FIBS? 

    o Tinyfugue 

    o xfibs 

    o MacFIBS (Beta) 

    o TkFibs 

    o FIBS/W 

    o xibc 

 o B4. Whats about LDB? (Long Distance Backgammon. BG by Email) 

 o B5. What other ways are there to play people via nets/modems/e-mail? 

    o Netgammon backgammon server 

    o Genie 

 o B6. Are there any electronic tournaments? 

 o B7. Do other game servers exist? 

      Backgammon , Bridge , Scrabble , Chinese Chess , Othello , Chess 


Section C: ELECTRONIC BACKGAMMON: VS MACHINE

++++++++++++++++++++++++++++++++++++++++++++


 o C1. Are there any BG programs out there for my computer? Where are they? 

    o bg06 

    o A PD mac program called ? 

    o Expert Backgammon 

    o Death by Backgammon 

    o xgammon 

 o C2. Which programs are good? How good is good? 

 o C3. Why is it so hard to write a good backgammon program? 

 o C4. What is TD-GAMMON? 


Section D: RESOURCES

++++++++++++++++++++


 o D1. I'm looking for a club to play in... 

    o Backgammon clubs in North America 

    o Playing Backgammon in the Boston area 

 o D2. Where are the tournaments? 

 o D3. I'm looking for information about newsletters and other publications. 

    o Anchors 

    o Backgammon Magazine 

    o BLITZ 

    o Chicago Point Newsletter 

    o Flint Area Backgammon News 

    o Hoosier Backgammon Club Newsletter 

    o Inside Backgammon 

    o International Backgammon Newsletter 

 o D4. Backgammon books and book reviews. 

    o BG books [summary] by Marty Storer 

    o BG books [summary] by John Bazigos 

    o How to play tournament BG [book] 

    o Backgammon (Robin Clay) [book] 

    o In The Game Until The End... [booklet] 

    o Learning From the Machine... [booklet] 

    o Other Books 

    o Danny Kleinman Books 

 o D5. A List of Backgammon Articles in Science and Business 

 o D6. Backgammon software and software reviews. 

    o BOINQ 

    o Hyperbackgammon 

    o Matchqiz (and demo) 

    o Expert Backgammon 

    o BG-SCRIBE 

    o The Match Strategist (and demo) 

    o rfibs (fibs recorder & playback) 

 o D7. Where does one purchase backgammon supplies and books? 

    o The GAMMON PRESS 

    o Carol Joy Cole 

    o Danny Kleinman 

    o Dansk Backgammon Forlag 

    o Crisloid 

 o D8. An index of backgammon resources available on the Internet. 


Section E: MISC.

++++++++++++++++


 o E1. What other games can be played on a backgammon board? 

    o Hyper Backgammon 

    o Nackgammon 

    o Narde 

    o Diceless Backgammon 

    o Acey-deucy 

 o E2. How does one become a better player? 

 o E3. Misc. 





Section 0: FORE FAQ

===================


Definition 

+++++++++++


   FAQ /F-A-Q/ or /faq/ [USENET] n.  1. A Frequently Asked Question.  2. A

       compendium of accumulated lore, posted periodically to high-volume

       newsgroups in an attempt to forestall such questions. Some people

       prefer the term 'FAQ list' or 'FAQL' /fa'kl/, reserving 'FAQ' for

       sense 1.


           ---from: The jargon file, Version 2.9.12, 10 May 1993


Editor 

+++++++


      Mark Damish   damish@ll.mit.edu


Purpose 

++++++++


      The purpose of this FAQ is to answer commonly asked questions which

      come up on the rec.games.backgammon news group and to compile a set of

      resources which might be useful to backgammon players in general.


      Contributions will be thankfully accepted. Send E-Mail to the editor

      of this list for inclusion and credit in future FAQs.


Availability 

+++++++++++++


      The FAQ will be posted on or around the 13th (13: is such a nice

      opening roll) of each month to rec.games.backgammon, rec.answers and

      news.answers.


      The FAQ is also available for anonymous ftp on:

          rtfm.mit.edu  /pub/usenet/news.answers/games/backgammon-faq


     FAQ Pointer: 

        A 'FAQ pointer' will be posted to rec.games.backgammon monthly, about

      2 weeks after the FAQ is posted.


      diff file:

        A diff file will created and posted to the rec.games.backgammon news

      group at the same time the FAQ is posted. This will contain the

      differences between successive FAQs. It will not be posted to the

      *.answers newsgroups, nor will it be archived at rtfm.mit.edu. The

      purpose of the diff file is to show recent changes without having to

      browse the entire FAQ. DO NOT use this file to update previous versions

      of the FAQ as it will have been edited!


      HTML version:

        An HTML (hypertext) version of the faq has been created. It is

      currently the `source' document for the ASCII version posted to

      rec.games.backgammon, and the rtfm archive. Most of the body of

      the html version has been marked up with preformatted sections.

      This is a tradeoff, as the quality of the ASCII version takes

      precedence. Within the document there are ``links'' from the

      table of contents, links within the document, and several

      links to ftp sites and other documents which make getting around

      the document, and the backgammon portion of internet quite easy.

      This version of the FAQ is called bg-faq.html, and may be downloaded

      for local reading with a Web-Browser, or may be read on line at:

         ftp.netcom.com /pub/damish/bg-faq.html



Disclaimer 

+++++++++++


      This posting is provided on an "as is" basis, NO WARRANTY whatsoever

      is expressed or implied, especially, NO WARRANTY that the information

      contained herein is correct or useful in any way, although both are

      intended.



Editorial 

++++++++++


      As a result of keeping the source document for the faq in HTML,

      this ascii version has a new look. I will correct the excess

      whitespace and the 80 column wrap. Other than that, what do

      you think?

      


Changes 

++++++++


      Changes may be spotted by examining the 'diff' file, which is posted at

      the same time as this FAQ. In the diff file, a '<' charactor preceding

      a line indicates that the line has been removed. Likewise, a '>'

      charactor indicates an addition. The diff file is edited and should not

      be used for updating from previous versions.


Gratitude 

++++++++++


      Major and minor contributions and suggestions from the following:

         Jeremy Bagai     Matchqiz review.

         Matthew Clegg    The entire 'What is Internet' section.

         Paul Ferguson    Mac PD BG info. FIBS Client info.

         Michael Jampel   Chess Server Info.

         rjohnson         Additional info for rules section A2.

         Mika Johnsson    Original Backgammon article compilation.

         Rolf Kleef       Nackgammon.

         Asger Kring      Danish Newsletter, Book supply info. more.

         Andy Latto       Jacoby, Holland, Beavers, Chouette, Useful advice.

         Peter Nickless   Acey-Deucy Submission.

         Perry R. Ross    LDB (Long Distance Backgammon) mail server info.

         Mark Rozer       Inspired me to play this game.

         Gerry Tesauro    Backgammon article pointers.

         Michael Urban    Boston area playing spots.

         Kit Woolsey      BOINQ and Hyperbackgammon Software reviews.

         Michael J. Zehr  Book Review, Holland rule, Combinitorics answer.

                          More.

         Vincent Zweije   FIBS description. Narde description. Proof reader

                          deluxe.

         [I apologize if I missed anybody]


         Thanks for ALL corrections sent!


         PLUS Thanks to all who have submitted material to the

              rec.games.backgammon news group, whether or not it

              has been used here. Material from rec.games.backgammon

              is credited where used.


         May you roll above average when you need it most.



News 

+++++


      Information that may or may not be included in the current FAQ:


       -- Check out the backgammon WWW page created by Stephen Turner.

          Use Mosaic or Lynx and read:

             http://www.statslab.cam.ac.uk/~sret1/backgammon/main.html


       -- I've set up an anonymous FTP directory which contains several

          backgammon related programs and demos including the 'race'

          bearoff source, Kit vs. Jeremy match in text format, and a 

          demo of Tom Johnsons program 'The Match Strategist' (See 

          section D6 for more info on Toms program).

             ftp.netcom.com  /pub/damish






Section A: ESSENTIALS

=====================


A1. What is backgammon?

+++++++++++++++++++++++


   ``Backgammon is an obstacle race between two armies of 15 men each,

   moving around a track divided into 24 dagger-like divisions known as

   points.''




   ``It's just a game.''


     -- Many




   ``It's a game of skill and luck.

    When I win I can claim it's due to my good skill.

    When I lose I can claim it's due to my bad luck.''


     -- submitted by David Forthoffer davidf@lpd.sj.nec.com




   ``There's an aesthetic to the game, a flow. People think the game consists

   primarily of math --- calculating odds and so forth. That's not true.

   It's essentially a game of patterns, a visual game, like chess. Certain

   patterns fit together harmoniously, make sense in a away that is

   nontrivial.''


     -- Paul Magriel




   Answering ``Why do you play backgammon'':


   ``We have become a spectator society, one that experiences excellence

   and creativity only by watching it on television or by reading about

   it in newspapers or magazines...Perhaps the best way of becoming

   something more than a spectator is to pursue activities that do not

   receive mass media coverage. We can invent our own art forms, or at

   least re-label existing forms as art. Backgammon, though it is very

   old and very common, is an excellent art form. Patterns of points and

   blots undergo poignant mutations. The player strains to work with them,

   to control them. One's identity is not entirely intrinsic, nor is it

   purely acquired. We can shape ourselves just as we can shape our

   surroundings. By playing backgammon, that is - by creating patterns of

   blots and points - I help to shape my identity, I set myself apart from

   the spectators. I become alive.''


     -- Felix Yen (from Anchors, Jan 92)




A2. What are the basic rules of the game?

+++++++++++++++++++++++++++++++++++++++++


Backgammon Equipment

--------------------


   -  A Backgammon board or layout.

   -  Thirty round stones, or checkers, 15 each of two different colors,

   -  A Backgammon board or layout.

   -   Thirty round stones, pr checkers, 15 each of two different colors,

      generally referred to as `men'.

   -   A pair of regular dice, numbered from 1 to 6. (For convenience,

      two pairs of dice, one for each player, are generally used.)

   -   A dice cup, used to shake and cast the dice. (Again, it is more

      convenient to have two dice cups.)

   -  A doubling cube---A six-faced die, marked with the numerals

      2,4,8,16,32 & 64. This is used to keep track of the number of

      units at stake in each game, as well as to mark the player who

      last doubled.


The backgammon board

--------------------


      Backgammon is an obstacle race between two armies of 15 men each,

   moving around a track divided into 24 dagger-like divisions known as

   ``points''.


      The Backgammon layout is divided down the center by a partition,

   known as the ``bar'' (See Diagram 1), into an outer and inner (or home)

   board or table. The side nearest you is your outer and home tables;

   the side farther away is your opponents outer and home boards. The

   arrows indicate the direction of play.


      For purposes of convenience we have numbered the points in the

   diagram.  Though the points are not numbered on the actual board,

   they are frequently referred to during play to describe a move or a

   position. Your (X's) 4-point or 8-point will always be on your side

   of the board; your opponent's (O's) will always be on his side of

   the board.


      A move from your 9-point to your 5-point is four spaces (the bar

   does not count as a space). A move from White's 12-point to your

   12-point, though it crosses from his board to yours, is but one

   space, for these two points are really next to each other.


      Diagram 2 shows the board set up ready for play. Each side has

   five men on his 6-point, three men on his 8-point, five men on his

   opponent's 12-point, and two men, known as ``runners'', on his opponents'

   1-point. The runners will have to travel the full length of the

   track, the other men have shorter distances to go. Note that play

   proceeds in opposite directions, so that the men can be set up in two

   ways. Turn the diagram upside down to see the layout if play were

   proceeding in the other direction.



      +-------------------------------------------------->

      |

      |   +-----------------------------< X moves this direction

      |   |

      |   |

      |   |    13 14 15 16 17 18       19 20 21 22 23 24

      |   |   +------------------------------------------+

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |

      |   |   |                  |   |                   |  +----+

      ^   v   |   Outer Board    |BAR|     Home Board    |  | 64 |

      |   |   |                  |   |                   |  +----+

      |   |   | P  O  I  N  T  S |   |  .  .  .  .  .  . | Doubling

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |   Cube

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |

      |   |   | .  .  .  .  .  . |   |  .  .  .  .  .  . |

      |   |   +------------------------------------------+

      |   |    12 11 10  9  8  7        6  5  4  3  2  1

      |   |

      |   +---------------------------------------------->

      |

      +---------------------------------< Y moves this direction



                  Diagram 1  (Numbered from X's point of view)



       13 14 15 16 17 18       19 20 21 22 23 24

      +------------------------------------------+

      | X  .  .  .  O  . |   |  O  .  .  .  .  X |

      | X           O    |   |  O              X |

      | X           O    |   |  O                |

      | X                |   |  O                |

      | X                |   |  O                |  +----+

      |                  |BAR|                   |  | 64 |

      | O                |   |  X                |  +----+

      | O                |   |  X                |

      | O           X    |   |  X                |

      | O           X    |   |  X              O |

      | O  .  .  .  X  . |   |  X  .  .  .  .  O |

      +------------------------------------------+

       12 11 10  9  8  7        6  5  4  3  2  1


      Diagram #2  (Numbered from X's point of view)



Object of the game

------------------


             

      The object of Backgammon is for each player to bring all his men

   into his home board, and then to bear them off the board. The first

   player to get all his men off the board is the winner.


Starting the game

-----------------


      Each player casts one die. The player with the higher number makes

   the first move, using the two numbers cast by his die and his

   opponent's. In the event that both players roll the same number, it

   is a standoff and each rolls another die to determine the first move.

   In the event of subsequent ties, this process is repeated until the

   dice turn up different numbers. (In some games, players double the

   unit stake automatically every time they cast the same number; others

   limit the automatic doubles to one. In tournament play, there is no

   such thing as an automatic double.)


Moving your men

---------------


      Each player's turn consists of the roll of two dice. He then moves

   one or more men in accordance with the numbers cast. Assume he rolls

   4-2. He may move one man six spaces, or one man four spaces and

   another man two spaces. Bear in mind that, when moving a single man

   for the total shown by the two dice, you are actually making two

   moves with the one man---each move according to the number shown on

   one of the dice.


Doublets

--------


      If the same number appears on both dice, for example, 2-2 or 3-3

   (known as doublets), the caster is entitled to four moves instead of

   two. Thus, if he rolls 3-3, he can move up to four men, but each move

   must consist of three spaces.


      The players throw and play alternately throughout the game, except

   in the case where a player cannot make a legal move and therefore

   forfeits his turn.


Making points

-------------


      A player makes a point by positioning two or more of his men on

   it. He then ``owns'' that point, and his opponent can neither come to

   rest on that point nor touch down on it when taking the combined

   total of his dice with one man.


Prime

-----


      A player who has made six consecutive points has completed a

   prime. An opposing man trapped behind a prime cannot move past, for

   it cannot be moved more than six spaces at a time---the largest

   number on a die.


Blots

-----


      A single man on a point is called a blot. If you move a man onto

   an opponent's blot, or touch down on it in the process of moving the

   combined total of your cast, the blot is hit, removed from the board

   and placed on the bar.


      A man that has been hit must re-enter in the opposing home table.

   A player may not make any move until such time as he has brought the

   man on the bar back into play. Re-entry is made on a point

   equivalent to the number of one of the dice cast, providing that

   point is not owned by the opponent.


Closed board

------------


      A player who has made all six points in his home board is said to

   have a closed board. If the opponent has any men on the bar, he will not

   be able to re-enter it since there is no vacant point in his

   adversary's home board. Therefore, he forfeits his turn, and

   continues to do so until such time as the player has to open up a

   point in his home board, thus providing a point of re-entry.


Compulsory move

---------------


      A player is compelled to take his complete move if there is any

   way for him to do so. If he can take either of the numbers but not

   both, he must take the higher number if possable, the lower if not.


     [Another way of saying this...]


 

   *  If both parts of the roll can be played legally, then this must be

      done.  Note that you may play the roll in such a way as to move fewer

      pips than the larger die indicates by playing the smaller die first ---

      this is common in bearoff situations, and legal as long as each part of

      the roll is played legally at the moment you play it.

    * If only one part of the roll can be played legally, then you must play

      the higher die if possible; if not, play the lower die.


   --kw      


Bearing off

-----------


      Once a player has brought all his men into his home board, he can

   commence bearing off. Men borne off the board are not re-entered into

   play. The player who bears off all his men first is the winner. A

   player may not bear off men while he has a man on the bar, or outside

   his home board. Thus if, in the process of bearing off, a player

   leaves a blot and it is hit by his opponent, he must first re-enter

   the man in his opponents home board, and bring it round the board

   into his own home board before he can continue the bearing off

   process.


      In bearing off, you remove men from the points corresponding to

   the numbers on the dice cast. However, you are not compelled to

   remove a man. You may, if you can, move a man inside your home board

   a number of spaces equivalent to the number of a die.


      If you roll a number higher than the highest point on which you

   have a man, you may apply that number to your highest occupied

   point.  Thus, if you roll 6-3 and your 6-point has already been

   cleared but you have men on your 5-point, you may use your 6 to

   remove a man from your 5-point.


     In some cases it may be advantagous to play the smaller die first

   before applying the higher die to your highest point (See Compulsory

   Move).  For example, suppose you have one checker on your 5 point,

   and two checkers on your 2 point.  Your opponent has a checker on

   the ace (one point) and on the bar.  You roll 6-3.  You may play the

   3 to the 2 point then the 6 to bear a checker off the 2 point

   leaving your opponent no shots (no blots for the opponent to hit).

   The alternative, using the 6-3 to bear checkers off both the 5 and 2

   points, would leave your opponent 20 out of 36 ways to hit your

   remaining blot.


Gammon and Backgammon

---------------------


      If you bear off all 15 of your men before your opponent has borne

   off a single man, you win a gammon, or double game.


     If you bear off all 15 of your men before your opponent has borne

   off a single man, and he still has one or more men in your home board

   or on the bar, you win a backgammon, or a triple game.


Cocked dice

-----------


      It is customary to cast your dice in your right-hand board. Both

   dice must come to rest completely flat in that board. If one die

   crosses the bar into the other table, or jumps off the board, or does

   not come to rest flat, or ends up resting on one of the men, the dice

   are ``cocked'' and the whole throw, using both dice, must be retaken.




A3. What is the doubling cube for?

++++++++++++++++++++++++++++++++++


      The introduction of the doubling cube into the game is largely

   responsible for the leap in popularity of modern backgammon.


      Each face of the doubling cube bears a number to record

   progressive doubles and redoubles, starting with 2 and going on to 4,

   8, 16, 32 & 64. At the commencement of play, the doubling cube rests

   on the bar, between the two players, or at the side of the board. At

   any point during the game, a player who thinks he is sufficiently

   ahead may, when it is his turn to play and before he casts his dice,

   propose to double the stake by turning the cube to 2. His opponent

   may decline to accept the double, in which case he forfeits the game

   and loses 1 unit, or accept the double, in which case the game

   continues with the stake at 2 units. The player who accepts the

   double now ``owns'' the cube---which means that he has the option t

   redouble at any point during the rest of the game, but his opponent

   (the original doubler) may not. If, at a later stage he exercises

   this option, his opponent is now faced with a similar choice. He may

   either decline the redouble and so lose 2 units, or accept and play

   for 4, and he now ``owns'' the cube. A player may double when he is on

   the bar even if his opponent has a closed board and he cannot enter.

   Though he does not roll the dice, for he cannot make a move, he still

   has the right to double. Note that gammon doubles or backgammon

   triples the stake of the cube.




A4. What is the Crawford rule? (Why won't FIBS let me double?)

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


  From the FIBS help screens:


  If you are playing an n-point match and your opponent is ahead

  of you and he gets to n-1 points you are not allowed to use

  the doubling cube in the next game to come


   EXAMPLE:

             5 point match

                  score

     game #   You      opponent

        1      0          3

        2      0          4

        3      1          4   (you were not allowed to double in this game)

        4      3          4   (you were allowed to double again)

       ...    ...        ...



   The Crawford rule is universally used in backgammon match play.




A5. What is the Jacoby rule?

++++++++++++++++++++++++++++


   The Jacoby rule is used in money games. It states, that a gammon

   or backgammon may not be scored as such unless the cube has been

   passed and accepted. The purpose is to speed up play by eliminating

   long undoubled games.


   The Jacoby rule is never used in match play.




A6. What is the Holland rule?

+++++++++++++++++++++++++++++


   This rule applies to match games and states that in post-Crawford games

   the trailer can only double after both sides have played two rolls.  It

   makes the free drop more valuable to the leader but generally just

   confuses the issue.


   Unlike the Crawford rule, the Holland rule has not proved popular,

   and is rarely used today.




A7. What are those critters --- Beavers, raccoons?

++++++++++++++++++++++++++++++++++++++++++++++++++


   In money play, if player A doubles, and player B believes that he is

   a favorite holding the cube, he may turn the cube an extra notch as he

   takes, and keep the cube on his own side. For example, if A makes an

   initial double to 2, B may, instead of taking the double and holding a

   2 cube, say ``beaver'', turn the cube an extra notch to 4, and continue

   the game holding a 4 cube.


   If A believes that B's beaver was in error, some play that he may then

   ``raccoon'', turning the cube yet another notch (to 8 in the example). Cube

   ownership remains with B. B may then if he wishes turn the cube yet

   another notch, saying ``aardvark'', or ``otter'' or whatever silly animal

   name he prefers (the correct animal is a matter of controversy), and so

   forth.


   Beavers and the rest of the animals may be played or not in money

   play, as the players wish.


   Beavers and other animals are never used in match play.


   -- Andy Latto




   It should be noted that the original cube turner can drop a beaver.

   For example, suppose I miscount a bearoff and double, you accept and

   say you want to beaver.  I realize something is wrong and recount.

   If I am horribly behind, I can drop the beaver, paying you the value

   on the cube before you beavered.


   -michael j zehr




A8. What is a Chouette?

+++++++++++++++++++++++


   A Chouette is a social backgammon variant for more than 2 players.

   One player is ``the box'', and plays against all other players

   on a single board. One other player is the captain, and rolls the

   dice and makes the plays for the team that opposes the box. If the

   box wins, the captain goes to the back of the line, and the next player

   becomes captain. If the captain wins, the box goes to the back of the

   line, and the captain becomes the new box.


   Customs vary as to the rights of the captain's partners: In some Chouettes,

   they may consult freely as to the way rolls should be played. In

   others, consultation is prohibited. A compromise, where consultation

   is allowed only after the cube has been turned, is popular.


   Originally, Chouettes were played with a single cube. The only

   decisions that players other than the captain were allowed to make

   independently concerned takes: If the box doubled, each player on the

   team could take or drop independently. Today, multiple-cube Chouettes

   are more popular; each player on the team has his own cube, and all

   doubling, dropping, and taking decisions are made independently by all

   players.


   -- Andy Latto





Section B: ELECTRONIC BACKGAMMON: VS OTHER HUMANS

=================================================


B1. What is FIBS?

+++++++++++++++++


   [Addresses edited to reflect FIBS move to Sweden]


   From: zweije@wi.leidenuniv.nl (Vincent Zweije)


   FIBS stands for First Internet Backgammon Server.  It is a

   telnet server you can use to play backgammon.  You can reach it

   by telnetting to fraggel65.mdstud.chalmers.se 4321

   (129.16.235.153, port 4321).  Sometimes tournaments are organized

   on this server.


   It is a good idea to read the help screens on-line.






B2. What is the Internet and how do I get onto it? (From OK.FAQ)

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


   [This is copied verbatim, with permission, from OK.FAQ. References to 'OK'

   are referring to the bridge server.]

   [Permission from mclegg@cs.ucsd.edu (Matthew Clegg) for use here.]


   In addition to having access to a Unix system, you must also be connected

   to the Internet.  The Internet is a worldwide computer network which was

   founded for the sake of promoting research and education.  Recently,

   the Internet has been broadening its mission and it's likely that

   soon the Internet will be open for commercial as well as educational

   uses.


   Already it is possible for the general public to obtain access to

   the Internet for a modest fee in many metropolitan areas of the US.

   A few representative Internet providers include:


   Area Served    Voice No.     Email                 Organization

   -----------    --------      -----                 ------------

   West Coast     408-554-UNIX  info@netcom.com       Netcom Online Comm. Svcs

   Boston         617-739-0202  office@world.std.com  The World

   New York City  212-877-4854  alexis@panix.com      PANIX Public Access Unix


   Many OKbridgers play from home using a PC or Mac and a modem.

   Frequently, these people have obtained access to the Internet by

   purchasing an account from a "public access Unix system connected to

   the Internet," which is the jargon describing the service provided by

   the above companies.  Having obtained such an account, it is usually a

   simple matter to obtain OKbridge and begin playing (see below).


   If you will be searching for a means to use OKbridge, it is important

   to remember the wording, "public access Unix system (directly) connected

   to the Internet."  There are a number of BBS operators who have Email

   connections to the Internet, but this is not sufficient.  Also,

   there are several network services which provide access to the

   Internet but which are not Unix based (Delphi is a notable example).


   For more information about the Internet, which is an amazing and

   wonderful resource, see the books:


   Krol, Ed, The Whole Internet: User's Guide & Catalog,

     O'Reilly & Associates, 1992.


   Kehoe, Brendan P., Zen and the Art of the Internet: A Beginner's Guide,

     2nd ed., Prentice Hall, 1993.


   LaQuey, Tracy, with Jeanne C. Ryer, The Internet Companion:

     A Beginner's Guide to Global Networking, Addison-Wesley, 1993.


   These books are filled with useful information about Unix and the

   Internet, including how to send electronic mail, how to download

   free software, and how to access some of the many information services

   which are available on the Internet.






B3. Are there any GUI's for FIBS?

+++++++++++++++++++++++++++++++++


Tinyfugue

---------


      Tinyfugue is a telnet client program which breaks the screen into

   separate 'panes' for input and output. A specialized version exists where

   a non scrolling backgammon board is displayed in a third pane. The

   specialized version is available for anonymous ftp from

   figment.csee.usf.edu in the directory /pub/misc/FIBS_client.

   

    Patches made by:


    David Eggert (eggertd@sanibel.csee.usf.edu)

      (window routines)

    Andreas Schneider (marvin@rog.rwth-aachen.de)

      (board printing routines and /board command)


   

    figment.csee.usf.edu  /pub/misc/FIBS_client





xfibs

-----


   [Note: The current version of xfibs is xfibs07]


   Article: 2440 of rec.games.backgammon

   From: torstein@itekiris.kjemi.unit.no (torstein hansen)

   Newsgroups: rec.games.backgammon

   Subject: Motif-based client for FIBS available

   Date: 6 Jan 1994 13:03:58 GMT


   As some of you fibsters already know, I have been strugling with

   a Motif-based client to the FIBS-server for some time now.


   As I'll be moving away from my beloved X-terminal at the end of this

   month, and thus won't be able to do much more work on the client,

   I hereby declare xfibs as released...


   (include standing ovation here... :)


   At present, and at least for a few months the code can be fetched by

   anonymous ftp from itekiris.kjemi.unit.no (129.241.12.40) in the

   /pub-directory. The last version last time I looked was

   xfibs05-02.


    itekiris.kjemi.unit.no  /pub


   Description of the program:

     xfibs uses several seperated windows for its output. (3 to be

     excact.) At the top there is the graphical view of the

     backgammon board with dices, doubling cube etc.

     Below is two more windows, one for text coming from the server and

     the other acting like a command window.


   Nice features:

     The pieces may be moved by moving them with the mouse.


     Depending on what is happening, the right mouse button brings up

     different popup-menues with choices like roll,double,resign;

     accept double, reject double; accept move, reject move etc.

     To see what is available, just try it...


     User configurable menues. By editing a .xfibsrc file you may

     configure the menubar according to your personal taste. Look at

     the accompaning xfibsrc-example file for ideas.


     Also, look into the example app-defaults file for what resources

     that may be specified.


     \gag and \hilite commands: It seems like these commands are quite

     useful. Check out the new_in_05-02 file for an explenation for its

     use. (This file is living by itself at the ftp-site)


   Not so nice features:

     There are probably bugs...


     If the mouse stops working, try issuing the move command from the

     input window. That should do the trick. I hope it doesn't happen,

     though.


     Input window is limited in size. If you experience that your commands

     doesn't get through, try deleting some lines in the window.

     (Or try to reduce your shouting :))


     Athena widgets are not supported.


   Help needed:

     There is no man-page at present. If anyone out there with some

     knowledge on nroff, troff or whatever it's called could jot

     down something I would be more than happy.


     If you experience bugs, and actually manage to track them down,

     put patches on the ftp-server in the directory pub/patches.


     Put wishes for new or improved feautures in the /pub/wishes

     directory. I won't be able to do anything about them though, but

     there might be some kind soul out there that wants a programming

     challenge :)


   Conditions for use:

     If you actually use the program, could you send me an e-mail

     message stating so? It would be nice to know if the program is

     useful for anyone else but me...


   Final comment:

     HAVE FUN, AND A HAPPY NEW FIBS-YEAR TO EVERYONE!


   Torstein Hansen

   torstein@itekiris.kjemi.unit.no



   [pick up any patches/bugfixes as well]





MacFIBS (Beta)

--------------



   Article: 2455 of rec.games.backgammon

   From: Paul Ferguson 

   Newsgroups: rec.games.backgammon

   Subject: MacFIBS is coming, folks, seriously...

   Date: 10 Jan 1994 17:16:40 GMT


   Seeing the announcement about an X FIBS client, I thought it was

   a good time to update people about MacFIBS, a Macintosh FIBS client.


   I've been working on MacFIBS for the past several months; some of

   you may have seen me on FIBS testing the program.  However, due

   to work committments (ah, work...) and personal committments (ah,

   wife...), I have had very little time to work on it.  I apologize

   for all those Mac users who have been waiting patiently.  The wait

   should be over soon.


   Like xfibs, MacFIBS provides multiple windows: a board window for

   dragging pieces and dice, a terminal window for debugging or

   directly typing FIBS commands, a score card/statistics window,

   a user list window, and a chat window (complete with "gag").


   MacFIBS requires a MacTCP connection to the internet (direct, SLIP,

   or PPP).  I may do a dumb terminal (serial) connection later, if

   demand (and time) warrants it.  MacFIBS also requires a color

   Mac and at least a 68020 system (sorry, Plus/SE/Classic users;

   life sucks...)


   If you are interested in participating in beta testing MacFIBS,

   please send me a note.  You must have the required stuff mentioned

   above, as well as the ability to receive large binary attachments

   via the internet.


   See you on FIBS!


    --fergy





TkFibs

------


   From: keithv@chiwaukum.CS.Berkeley.EDU (Keith Vetter)

   Subject: TkFibs - an X interface to FIBS available

   Date: 4 Apr 1994 19:31:41 GMT

   Organization: University of California, Berkeley


   Announcing TkFibs, an X based, graphical user interface to Fibs.


   TkFibs is a tcl/tk client that provides a better interface to Fibs. It

   displays two windows: one a graphical depiction of the board, the other

   session window with Fibs ala the bottom two windows in tinyfugue.


   I've been using the program for over 5 months now so it should be very

   solid. I've run it on DecStations, SparcStations, HP 735 and Alphas.


   The biggest caveat is that it requires TCL/TK to run. TCL/TK is a

   very nice scripting / user interface package for X. It is available

   from ftp.cs.berkeley.edu in /ucb/tcl.


    TkFibs is located at shuksan.cs.berkeley.edu  /pub/tkfibs


   Send comments, suggestions, bugs, etc to:

     tkfibs@shuksan.cs.berkeley.edu


   Enjoy

   keith vetter








FIBS/W

------


   FIBS/W v2.21


   FIBS/W is a Microsoft Windows(TM) based client for FIBS. FIBS/W provides a

   graphical game board and mouse-driven  interface to the FIBS server. Most

   operations required to play a game can be executed using mouse, keyboard,

   menus or toolbar buttons.


   Powerful configuration options for many common Internet host systems,

   and communications service providers, and a built-in communications

   scripting language allow FIBS/W to automatically dial and connect

   to FIBS via the Internet with a single mouse click.


   To use FIBS/W you must have a modem and access to a dial-in Internet

   host computer providing Telnet services. FIBS/W currently only supports

   host machines which provide dumb terminal-server access to the Internet.

   FIBS/W does *not* currently support TCP/IP, PPP or SLIP protocols.

   If you can connect to the Internet using Windows Terminal, then you

   can use FIBS/W.


   FIBS/W requires version 3.1 or later of Microsoft Windows, or any

   version of Windows for Workgroups or Windows/NT. FIBS/W will also run

   as a Windows application under OS/2 2.X.


   FIBS/W is provided as Shareware. The registration fee is US$40. This

   version of FIBS/W includes a Nag Screen (a mildly annoying dialog

   which is displayed every time the program is run) but is otherwise

   fully functional.


   FIBS/W is available via anonymous FTP at:

    resudox.net in the directory  /pub/pc/windows/games/fibsw


     Robin Davies.

     robind@resudox.net

     FIBS: Q





xibc

----


   From: d9jesper@dtek.chalmers.se (Jesper Blommaskog)


   "xibc" is an X11 client to the First Internet Backgammon Server. It

   is using the freeware packages Tcl, Tk and Expect. Normally, you have

   to fetch and compile those to be able to run xibc, but not anymore

   (provided you have a SunSparc!).


      ftp.cd.chalmers.se:pub/xibc/xibc-X.XX.tar.Z

      ftp.cd.chalmers.se:pub/xibc/xibc-X.XX.README


      ftp.cd.chalmers.se  /pub/xibc/


   # If you need an executable (Sun-SparcOS 4.1.x only):


     ftp.cd.chalmers.se:pub/xibc/binREADME

     ftp.cd.chalmers.se:pub/xibc/BX.enc


   # If you need an executable and don't have a Sparc, then you need

   # to compile Tcl, Tk and Expect on your own. Here's the ftp addresses:


      sprite.berkeley.edu:/tcl/tcl7.3.tar.Z

      sprite.berkeley.edu:/tcl/tk3.6.tar.Z

      sprite.berkeley.edu:/tcl/tk3.6p1.patch

      ftp.cme.nist.gov:/pub/expect/alpha.tar.Z


      (all but the patch are present at cme.nist.gov)


   Features of xibc include:


    * Log out from FIBS but keep the interface on the screen (maybe

      iconified). Permits you to start xibc in your X startup files

      and keep it up all time.


    * X resource Tk*xibcLogfile that names a file where to log match

      results. Example from my own file ~/.Xdefaults:


   Tk*xibcLogfile:   ~/spel/backgammon/xibc.log


    * Resource Tk*xibcDelay that sets the programmed delayes in the

      interface (the time interval between the different moves in a

      sequence). Time is in milliseconds. May also be changed during

      a session from a menu (but may not be saved).


      Example: Tk*xibcDelay:   500


    * The command line has some emacs/tcsh-style "cooked" line features:

           C-n next line in history

           C-p previous line in history

           C-a first on line

           C-e last on line

           C-u delete whole line

           C-d delete the character after the insertion marker

   and also

           C-s toggle "autoscroll" mode of the text window

           C-l toggle logging of game to a log file

           C-c log out from server and quit the interface       


    * There is a menu option called "Emergency". It may also be invoked

      with "M-e". It reloads the whole board position from the server.

      Nice when the interface screws up (it does sometimes).


    * A menu option "Empty textwindow" will delete all rows in the text

      window in access of 500. May someday become an X resource.


   Don't try to push the interface to hard, that is, don't try to break

   it. You will most definitely succeed (not hard at all, I guess). Since

   I'm sort of an artist, I don't like breaking my own things so I

   haven't really tried to find the bugs.


   Special features (also called known bugs):

    * Try the "look" command.

    * Play a game against "You".

    * Do several things at "the same time".

    * Answer questions like "Accept double" or "join/leave" from the

      command line, not by using the interface.

   If you try them out, remember there's always the "Emergency" command

   around.


   -Jesper Blommaskog, author of "xibc"


   -----


   [Just a reminder to client writers. Some of us live behind 'firewalls',

    or can only obtain phone access. Please remember us!]






B4. Whats about LDB? (Long Distance Backgammon. BG by Email)

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



   - ldb   - Long Distance Backgammon. Play backgammon by E-mail.

             Program written by Perry R. Ross (perry@aap.com)


   From the ldb man page:


   Ldb allows two people to play backgammon over a network using electronic

   mail.  It runs on character-oriented terminals, or emulators thereof, using

   the curses screen package. It will run on most UNIX dialects, as well as

   VAX-C under VMS 5.0 and above.  Ldb handles all aspects of starting,

   playing, checking, and scoring games.  It enforces all normal game rules,

   as well as several optional rules, and will not let you make an illegal

   move. When you have made your moves, ldb will automatically package your

   move and send them to your opponent.


   -----


   The latest version is 1.3.2. Version 1.3 can be found in directory

   volume36. Patches can be found in subsequent volumes at your favorite

   comp.sources.misc archive site. Patch 1 is in volume 39. Patch 2 is in

   volume ??.  Use:

                           'unix_prompt$ archie ldb'

   to locate the sources.


   [from Perry]

   I mentioned in that patch that, for people who can't figure out

   how to get ldb or how to apply patches, I'd be happy to send

   them a complete copy of the latest version.  You might want

   to put the same offer into the faq.


   [Has anybody written a PC/Mac version using CC-mail via a Novell network?]


   [from Perry...]

   Well, I'd always intended to do a PC port, but just never got around to it.

   I was a bad boy, 32-bit wise, so there would be a little effort involved

   making it 16-bit clean.  There's a package that simulates curses on a

   PC, I've heard.  As far as the particular mail transport, ldb doesn't

   really care.  It puts outgoing messages into a text file and executes

   a user-defined command to send the message.  Incoming mail can be read

   from a user-defined file (or pattern, to read multiple files), which

   ought to be pretty transport-independent.  It wouldn't be that hard

   to port, I don't think.


   [Anybody have a little ambition?]


   The ldb 'game starter' operated by leopard@midnight.WPI.edu

   (Leo Gestetner) has been shut down. [ Are there others? ...Mark]






B5. What other ways are there to play people via nets/modems/e-mail?

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



Netgammon backgammon server

---------------------------



   - There is now a second backgammon server on-line, running on a 486 UNIX

     box. 'Netgammon' can be reached 24 hours at balder.novalink.com 3200

     (IP address 192.233.90.2 3200)  [Thanks Garrett]




Genie

-----



   - Genie - An electronic service which includes multi-player games

             including backgammon. Pay by the hour for use.


   [Who has information for getting started on Genie?]

   [Who has opinions about backgammon on Genie (Mine were quite negative) ]








B6. Are there any electronic tournaments?

+++++++++++++++++++++++++++++++++++++++++



   There are tournaments on FIBS and Genie.


   Tournaments on FIBS have been organized by David Eggert. They are

   particularly fun, as they seem to be designed to try and equalize playing

   skill levels!  Contact:  -- 'Snoopy' on FIBS

                            -- eggert@mozart.ms.uky.edu


   'igor' and 'davide' have also orginzed money tournaments on FIBS.




   Genie has a quarterly single elimination tournament. $25 entry fee. Cash

   and credit prizes for first-fourth place. Hourly fee in effect while you

   play. The draw is non random, in that previous winners are placed such that

   they do not play each other in the first several rounds.








B7. Do other game servers exist?

++++++++++++++++++++++++++++++++



Backgammon

----------



     There is now a second backgammon server on-line, running on a 486 UNIX

     box. 'Netgammon' can be reached 24 hours at balder.novalink.com 3200

     (IP address 192.233.90.2 3200)  [Thanks Garrett]







Bridge

------



           Get 'OK.FAQ' from rec.games.bridge or rtfm.mit.edu for info

           on an Internet bridge server.








Scrabble

--------



       telnet 134.53.14.112 7777







Chinese Chess

-------------



      USA:     telnet coolidge.harvard.edu 5555       or 128.103.28.15 5555

      Sweden:  telnet hippolytos.ud.chalmers.se 5555  or 129.16.79.39  5555








Othello

-------



   Othello(tm)/Reversi: telnet faust.uni-paderborn.de 5000








Chess

-----



   Chess:

      rafael.metiu.ucsb.edu 5000    128.111.246.2 5000

      ics.uoknor.edu 5000           129.15.10.21 5000











Section C: ELECTRONIC BACKGAMMON: VS MACHINE

============================================



C1. Are there any BG programs out there for my computer? Where are they?

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



bg06

----



   Most PD/Shareware backgammon programs are currently weak. The strongest

   that I have played has been bg06.zip for windows. This _looks_ an awful

   lot like the commercial program "BG by George". I've also seen the

   Spinnaker program sold as public domain, even though it is still being

   sold commercially.


   bg06 is available for anonymous ftp from ftp.cica.indiana.edu in the

   directory /pub/win3/games/








A PD mac program called ?

-------------------------



   There is a backgammon game for the Macintosh by Stephen Young, Debra

   Willrett, and David Young.  The 1.0 version is fairly widespread, although

   there is a 2.0 version (dated May 25, 1989) available on America Online.

   The play is pretty weak, and the graphics are designed for the original

   small B&W Mac screen, but if you're really bored and can't find a human

   opponent, it works.  The game is freeware, and you get what you pay for.

     -- Paul Ferguson







Expert Backgammon

-----------------



   If you are serious about playing, Expert BG 2.1 can be bought for

   US$50, with the rollout features disabled, or for US$150, with them

   included. A 'Pro' version with enhanced rollout features is also

   available. See the 'What Programs Are Good...' section.

   A new Mac version has been mentioned for early 1994.

   There is a review in the software section of the FAQ.







Death by Backgammon

-------------------



     For those interested in a good bg game for Windows, why not try Death By

   Backgammon for Windows.

     It runs under Windows 3.1 or OS2/2.1, and features animated dice/game

   pieces, comprehensive help, move undo, suggest move, speed control over

   all motion, and is fully resizeable.

     Best of all, its strategy is very competitive (I wrote the thing, and

   have a roughly 50:50 average against it over many hundreds of games).

     If you are interested, I would be happy to send out a shareware version

   for evaluation.  The shareware version is fully functional, except that

   the computer's moves are painfully slow.

     There is also a DOS version, which is a bit older, but still features

   animation and VGA graphics.

     To get hold of the program there are two options:

       1. To get the shareware version, (free of charge) let me know and I can

          email you a zipped uuencoded version of the shareware. Alternatively,

          I can send you a floppy if you provide your mailing address.

       2. To get a registered copy of the program, send a cheque made out to

          Chris Kanaris, and I will email or post as above.

     Prices: Shareware - Nil

             Registered: WIN $AS 35.00, $US 30.00.

                         DOS $AS 20.00, $US1 5.00.

     My Postal address is: Chris Kanaris

                           PO Box 495

                           Essendon,

                           Victoria, 3040

                           Australia.


     [ People who have tried the shareware version claim that the program

       plays a pretty weak game. Hopefully computer bg game writers will

       continue to make their games stronger and stronger. Not and easy

       task! ]








xgammon 

--------





   From:  klasen@obelix.uni-muenster.de at SMTP-Post-Office

   Subject: contribution to FAQ


   xgammon.0.96

   xgammon is a BG-playing programm originally written for Linux.

   The authors are Lambert Klasen (klasen@uni-muenster.de) and

   Detlef Steuer (steuer@amadeus.statistik.uni-dortmund.de, blotstorm on FIBS)


   Features:

   xgammon is Freeware under the Gnu Copyright.

   xgammon has nice graphical interface, you move by clicking on mousebuttons.

   You can do a maildump for a position, that means you get a file with

   a FIBS style board with current position in it.

   You can do money game or tournament game.

   You can edit positions via mouse on the board or via ascii plain text files.

   You can turn doubling on and off.

   You can do rollouts with doubling turned on and off.

   The programm uses an endgame database for perfect bearing off (and for

   reasonable running game).

   There is an compi_finish for shorten the boring part of the game.

   and and and ....

   You can have fun with xgammon.

   Give xgammon a chance getting compiled on your machine.

   We'd like any reactions, especially porting reports to OS different

   from Linux.

   (heard of AIX and Sun OS compiling), especially bug reports .

   Send a mail if you use it, please!


   You find the latest Version of xgammon, at the time xgammon.0.96.tar.gz,

   at ftp sunsite.unc.edu /pub/Linux/X11/games/strategy/xgammon.0.96.tar.gz.


   Detlef Steuer

   steuer@amadeus.statistik.uni-dortmund.de

   (blotstorm on FIBS)







C2. Which programs are good? How good is good?

++++++++++++++++++++++++++++++++++++++++++++++




     Program Name        Source      Type        Score

     -----------------   ------      ------      ------

    *TD-GAMMON 2.1        N/A         N/A         -0.05

     Expert BG 2.1       Weaver      IBM-PC       -0.20

     Expert BG 1.61      Weaver      IBM-PC       -0.35

     Championship BG     Spinnaker   IBM-PC       -0.66

     Expert BG           Komodo      Macintosh    -0.82

     Sensory BG 2        Scitek      Portable     -0.94

     Backgammon          Odesta      IBM-PC       -1.20

     BG by George        GS Labs     IBM-PC/Win   -1.52

     Video Gammon        Baudville   IBM-PC       -1.61

     PC-Gammon           Repsted     IBM-PC       -3.67

     Gammon              Gakken      Portable    -12.40

     Windows BG          Baudville   IBM-PC/Win  -13.83

     Gammon Pal          Fidelity    Portable    -15.63

     Micro BG            Fidelity    Portable    -15.53

     Games People Play   Toolworks   IBM-PC      -26.60


   [ From the 1994 The GAMMON PRESS catalog. ]


    *  Not available commercially, but may sometimes be played on FIBS.


   Score is the number of points won per game, on average, against a top

   flight human player. Very large numbers are caused by bad doubling

   algorithms which cause a program to double when behind (typically when

   primed but ahead in the race), causing the computer to lose some very

   large cubes.


   TD-Gammon, a neural network backgammon program by Gerry Tesauro,

   plays at the level of human experts. It is not, alas, available

   commercially. See 'What Is TD-Gammon' for more details. The most

   recent version, 2.1, has been estimated to play at -0.05 points

   per game against a top flight human expert, making the program

   the best anywhere, and one of the strongest players in the world;

   period!









C3. Why is it so hard to write a good backgammon program?

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++



   There are two basic ways that a computer can play a game as well as or

   better than humans.  One is to be really smart, the other is to do an

   awful lot of work.  The general strategy most game-playing programs use

   is to use an evaluation function that isn't very smart, but to make up

   for it by looking ahead a lot of moves (doing a lot of work).


   With chess, there are typically 20-30 moves by each player per turn.

   With backgammon, there are 21 unique rolls and often 4-6 ways to play

   each one (not counting doubles with could have 10 or more ways of

   playing).  This makes it very difficult to look ahead very many levels.

   Looking ahead 3 moves by both players examining all possibilities when

   there are 25 choices at each play requires evaluating "only" 244 million

   positions.  If there are 90 ways to play each move, there are 530,000

   million, positions.


   With a game like chess, one can discard all but the best 5 or 10 plays

   per person.  With backgammon, there are always 21 different choices of

   best plays, depending on the dice.  This makes it crucial to have an

   excellent evaluation function.


   The difficulty in doing this is that factors such as the race have a

   different effect on the value of the position depending on what stage

   the game is in.  Consider the concept of timing -- hard enough for

   people to grasp, extremely difficult for computers.


   Another example of the difficulty of evaluating plays:  It's almost

   always beneficial to close out your opponents checkers.  But if you've

   hit one checker and you almost have to hit a second to be able to win,

   closing out your opponent is very bad.


   -michael j zehr









C4. What is TD-GAMMON?

----------------------



   Newsgroups: rec.games.backgammon

   From: tesauro@watson.ibm.com (Gerry Tesauro)

   Subject: TD-Gammon paper available by FTP

   Sender: Gerald Tesauro (tesauro@watson.ibm.com)

   Date: Wed, 2 Jun 1993 18:06:35 GMT

   Disclaimer: This posting represents the poster's views, not necessarily

               those of IBM.


   The following paper, which has been accepted for publication

   in Neural Computation, has been placed in the neuroprose

   archive at Ohio State. Instructions for retrieving the paper

   by anonymous ftp are appended below.


   ---------------------------------------------------------------

      TD-Gammon, A Self-Teaching Backgammon Program,

             Achieves Master-Level Play


                 Gerald Tesauro

        IBM Thomas J. Watson Research Center

                  P. O. Box 704

            Yorktown Heights, NY 10598

             (tesauro@watson.ibm.com)


   Abstract:

   TD-Gammon is a neural network that is able to teach

   itself to play backgammon solely by playing against

   itself and learning from the results, based on the

   TD(lambda) reinforcement learning algorithm (Sutton, 1988).

   Despite starting from random initial weights (and hence

   random initial strategy), TD-Gammon achieves a surprisingly

   strong level of play.  With zero knowledge built in at the

   start of learning (i.e. given only a ``raw'' description

   of the board state), the network learns to play at a strong

   intermediate level.  Furthermore, when a set of hand-crafted

   features is added to the network's input representation, the

   result is a truly staggering level of performance:

   the latest version of TD-Gammon is now estimated to

   play at a strong master level that is extremely close to the

   world's best human players.

   ---------------------------------------------------------------

   FTP INSTRUCTIONS


        unix% ftp archive.cis.ohio-state.edu (or 128.146.8.52)

        Name: anonymous

        Password: (use your e-mail address)

        ftp> cd pub/neuroprose

        ftp> binary

        ftp> get tesauro.tdgammon.ps.Z

        ftp> bye

        unix% uncompress tesauro.tdgammon.ps

        unix% lpr tesauro.tdgammon.ps



   [ In the November/December 93 issue of Inside Backgammon, there is an

   article by Kit Woolsey, which rates ALL of the moves made by 3 programs

   for an entire 31 game series. TD-GAMMON was the strongest! I think that

   this is enough to officially call it the strongest backgammon program

   currently in existence!!!!  ...Mark ]











Section D: RESOURCES

====================



D1. I'm looking for a club to play in...

++++++++++++++++++++++++++++++++++++++++



Backgammon clubs in North America

---------------------------------



   Below is a list of backgammon clubs in North America. It was taken from

   the January/Febrary 1994 issue of the Chicago Point newsletter. It may

   be copied for noncommercial purposes as long as you give full credit to

   "CHICAGO POINT, 2726 West Lunt Avenue, Chicago, IL 60645-3039."



   (FORMAT)


   CLUB NAME.......................  LOCATION..................

   CITY & STATE........  MEETING ON................  TIME...

   CONTACT.............  TELEPHONE...

   MAIL INQUIRIES TO...................................



   (WEST)


   Gammon Associates                 Bombay Bicycle Club

   Burbank, CA           Tuesday                     7:00 PM

   Patrick Gibson        818/901-0464

   7641 Orion Avenue; Van Nuys, CA 91406


   Gammon Associates                 Bombay Bicycle Club

   Burbank, CA           Sunday                      2:00 PM

   Patrick Gibson        818/901-0464

   *


   Backgammon Club of San Diego      Kopper Kettle

   El Cajon, CA          Wednesday                   6:30 PM

   Mike Fujita           619/294-2007

   P.O. Box 178119; San Diego, CA 92117


   From: ldr@helium.msss.com (Laura Ravine) 

   Subject: backgammon FAQ update

   -

   The Backgammon Club of San Diego now meets on Sundays at 5:00pm and

   Wednesdays at 6:30 pm at Banx Restaurant, Nightclub, & Billiards in the

   Mission Valley area of San Diego, CA. The information line is still

   619/294-2007.



   San Francisco Backgammon          Golden Gate Grill

   San Francisco, CA     Tuesday                     7:45 PM

   Doug Adsit            415/931-4600

   3200 Fillmore Street; San Francisco, CA 94123


   San Francisco Bridge & BG Club    Clubroom

   San Francisco, CA     Mon., Wed., Fri.            9:00 PM

   Augie Hunt            415/776-6949

   777 Jones Street; San Francisco, CA 94109


   Colorado Backgammon               J.L.'s Cheers

   Denver, CO            Tuesday                     7:30 PM

   Earl Earp             303/778-1105

   102 W. 4th Avenue; Denver, CO 80223


   No. Nevada Backgammon Assn.       Rapscallion Seafood House

   Reno, NV              Thursday                    7:30 PM

   Jim Allen             702/329-1227

   449 W. Plumb Lane; Reno, NV 89509


   Pacific NW Backgammon Assn.       Shakey's Pizza

   Bellevue, WA          Monday                      7:00 PM

   Chuck Breckenridge    206/778-8181

   18204 Olympic View Drive; Edmonds, WA 98020


   Puget Sound Backgammon Assn.      European Connecktion

   Seattle, WA           Tuesday                     7:30 PM

   Guy Thurber           206/244-6737

   428 SW 127th Street; Seattle, WA 98146



   (CENTRAL)


   Bloomington-Normal BG Club        Ride The Nine

   Bloomington, IL       1st/3rd/5th Tues.           6:15 PM

   Lane O'Connor         309/454-1947

   108 Riss Drive; Normal, IL 61761


   North Club                        Office Building

   Chicago, IL           Daily except Sun.           12:30PM

   Greg Defotis          312/286-6719

   4747 W. Peterson Ave. 402; Chicago, IL 60646


   Chicago Bar Point Club            Golden Flame

   Chicago, IL           Tuesday                     6:30 PM

   Bill Davis            312/338-6380

   2726 W. Lunt Avenue; Chicago, IL 60645


   Chicago Bar Point Club            Braxton Seafood    Grill

   Oak  Brook, IL        Sunday bimonthly           12:30 PM

   Peter Kalba           312/252-7755

   2510 W. Iowa Street; Chicago, IL 60622


   Pub Club                          Cricket's Pub & Gdll

   Glendale Hts., IL     Most Sundays                1:30 PM

   V.W. Zimnicki         708/924-8632

   P.O. Box 72216; Roselle, IL 60172


   Pub Club                          Fiddler's Restaurant

   Villa Park, IL        Monday                      7:30 PM

   V.W. Zimnicki         708/924-8632

   *


   Prime BG Club of Chicago          TJ's Lounge/Radisson Hotel

   Lincolnwood, IL       Friday                      7:00 PM

   Joann Feinstein       708/674-0120

   8149 Kenton; Skokie, IL 60076


   Central Illinois Backgammon Club  Chi-Chi's

   Peoria, IL            Thursday                    6:30 PM

   Ed Zell               309/673-7622

   1920 W. Sherman Avenue; Peoria, IL 61604


   Sangamon Valley BG Assn.          Parker's Sports Bar

   Springfield, IL       Tuesday                     6:00 PM

   Mark Kaye             217/789-6275

   2602 Peoria Road A; Springfield, IL 62702


   Sangamon Valley BG Assn.          Parker's Sports Bar

   Springfield, IL       1st Sat./Nov.-Apr.         11:30 AM

   Mark Kaye             217/789-6275

   *


   Winnetka Backgammon  Club         Winnetka Community House

   Winnetka, IL          Wednesday                   7:00 PM

   Trudie Stern          708/446-0537

   4200 W. Lake 302C; Glenview, IL 60025


   Hoosier Backgammon Club           Spats

   Indianapolis, IN      Thursday                    7:00 PM

   Butch Meese           317/845-8435

   7620 Kilmer Lane; Indianapolis, IN 46256


   Flint Area Backgammon Club        Ramada Inn

   Flint, Ml             Thursday                    7:00 PM

   Carol Joy Cole        810/232-9731

   3003 Ridgecliffe Drive; Flint, MI 48532


   Plymouth Backgammon Club          Box Bar  &  Grill

   Plymouth, MI          Wednesday                   7:30 PM

   Dean Adamian          313/981-5706

   42954 Barchester; Canton, MI 48187


   Cavendish North BG Club           Clubhouse

   Southfield, MI        Daily except Sun.           1:00 PM

   Joe Sylvester         810/642-9616

   30065 Greenfield Road; Southfield, MI 48076


   Minneapolis Backgammon            Minneapolis Athletic Club

   Minneapolis, MN       Monday                      5:00 PM

   Fred Kalantari        612/339-4971

   4701 Valley View Road; Edina, MN 55424


   Cleveland Area Backgammon         Boulevard Sports Tavem

   Cuyahoga Falls, OH    Tuesday, Alt. Sat.          6:30 PM

   Irv Taylor            216/663-7332

   P.O. Box 28515; Cleveland, OH 44128


   Austin Backgammon Assn.           Bombay Bicycle Club

   Austin, TX            Monday                      7:30 PM

   Jackie Seiders-Smart  512/280-5945

   7715 Copano Drive, Austin, TX 78749


   American Backgammon Club          Vickery Feed Store

   Dallas, TX            Sunday                      6:00 PM

   Kati Pratt            214/827-8402

   5631 Ellsworth; Dallas, TX 75206


   Dallas Backgammon League          Humperdink's

   Dallas, TX            Wednesday                   7:45 PM

   Rich Weaver           214/620-7462

   2682 Hearthstone; Dallas, TX 75234


   Houston Backgammon Club           Sidney's

   Houston, TX           Tuesday                     8:00 PM

   Jack Butler           713/774-9439

   5931 Reamer Street; Houston, TX 77074


   San Antonio Backgammon            Dad's

   San Antonio, TX       Mon., Wed., Fri.            8:00 PM

   Marcel Mommers        512/620/5210

   3812 Greenridge Drive; Cilbo, TX 78108


   Milwaukee Backgammon  Club        Gas Lite North

   Milwaukee, WI         Wednesday                   7:00 PM

   Marv Amol             414/355-8805

   9031 N. 70th Street; Milwaukee, WI 53223


   Milwaukee Backgammon              Univ. of Wis.-Milwaukee

   Milwaukee, WI         Occasional Fridays          7:00 PM

   Bob Holyon            414/672-8359

   911 South 11th Street; Milwaukee, WI 53204



   (NORTHEAST)


   College Park Backgammon Club      Promenade Cardroom

   Bethesda, MD          2nd & 4th Sunday           12:00 N

   Barry Steinberg       301/530-0604

   6100 Westchester Pk. Dr. T2; College Park, MD 20740


   Cavendish Club of Boston          Clubroom

   Brookline, MA         Daily                      12:00 N

   Cad Saldinger         617/734-2230

   111 Cypress Street; Brookline, MA 02146


   New England Backgammon Club       Sheraton Commander Hotel

   Cambridge, MA         Sunday monthly [Sep-Jun]   12:30 PM

   Seth Towle            617/643-8154

   975 Massachusetts Avenue 501; Arlington, MA 02174


   New England Backgammon Club       Sheraton Commander Hotel

   Cambridge, MA         Monday                      7:00 PM

   Seth Towle            617/643-8154

   *


   Granite State Backgammon Club     Folkway Restaurant

   Peterborough, NH      Occasional Wed.             7:00 PM

   Lincoln Bedell        603/863-4711

   South Road; East Lempster, NH 03605


   New Jersey Backgammon Assn.       Best Western Oritani Hotel

   Hackensack,NJ         Tues. & Fri.                7:45 PM

   Ron Whitney           201/833-2915

   279 Glen Court; Teaneck, NJ 07666


   Ace Point Backgammon Club         Clubroom

   New York, NY          Daily                       3:00 PM

   Michael Valentine     212/753-0842

   41 E. 60th Street; New York, NY 10022


   Backgammon & Chess Express        Clubroom

   Now York, NY          Daily; Tour. Sun. monthly   1:00 PM

   Nick Rabchenok        212/587-8038

   64 Fulton Street 606; New York, NY 10038


   Coterie                           Clubroom

   New York, NY          Daily                       1:00 PM

   Louise Goldsmith      212/371-5151

   Private club. Telephone for information.


   New York Chess & Backgammon       Office Building

   New York, NY          Daily, Tour. Sunday        12:00 N

   Steve Manning         212/302-5874

   120 W. 41st Street 3; New York, NY 10036


   Saratoga Backgammon Club          Spa City Diner

   Saratoga Springs, NY  Tuesday                     7:00 PM

   Lee Hoge              518/584-1714

   P.O. Box 563; Saratoga Springs, NY 12866


   Greater New York BG Club          Woodbury Ramada Inn

   Woodbury, NY          Friday                      8:00 PM

   Dr. Bob Hill          718/341-3779

   194-22 115th Road; Jamaica, NY 11412


   Cavendish Club of Philadelphia    Clubroom

   Philadelphia, PA      Daily except Sunday         1:00 PM

   Ken Relver            215/473-9564

   3801 Conshohocken Avenue; Philadelphia, PA 19131


   Pittsburgh Backgammon Assn.       Murphy's Tap Room

   Pittsburgh, PA        Tuesday                     8:30 PM

   Steve Hast            412/823-7500

   3560 Ridgewood Road; Pittsburgh, PA 15235



   (SOUTH)


   Suncoast Backgammon Assn.         New York, New York Lounge

   Clearwater, FL        Mon. & Wed.                 7:00 PM

   Drew Giovanis         813/726-1398

   25350 U.S. Hwy 19 N. 67; Clearwater, FL 34623


   South Florida Backgammon          Popfinger's

   Ft. Lauderdale, FL    Sunday                      1:00 PM

   Elayne Feinstein      305/785-1282

   2621 NE 7th Terrace; Pompano Beach, FL 33064


   Backgammon Club of N.W. Florida   Olde English Pub

   Lynn   Haven, FL      Thursday                    7:30 PM

   Rick Bieniak          904/773-2013

   P.O. Box 416; Wausau, FL 32463


   Odando Backgammon                 Coach's Locker Room

   Odando, FL            Tuesday                     7:30 PM

   David Thomas          904/736-2844

   P.O. Box 803, Deland, FL 32721


   Backgammon Society of Sarasota    Crazy Fox Tavem

   Sarasota, FL          Tuesday                     7:30 PM

   Cal Kendall           813/486-9119

   824 Capri Isle Blvd. 207; Venice, FL 34292


   Atlanta Backgammon                Tony's Grill & Tap

   Roswell, GA           Wednesday                   7:00 PM

   Dave Cardwell         404/682-1969

   P.O. Box 956547; Duluth, GA 30136


   Backgammon In Louisville          Delta Lounge

   Louisville, KY        2nd & 4th Tuesday           6:30 PM

   Quint McTyeire        502/896-9783

   4906 Crofton Road; Louisville, KY 40207



   (CANADA)


   Calgary Backgammon                Buckingham Pub

   Calgary, AB           Occasional Mondays          7:00 PM

   Hal Heinrich          403/234-9944

   402-1122 15th Ave. SW; Calgary, AB T2R 1K5; CANADA


   Toronto Backgammon                Le Spot

   Scarborough, ON       Thursday                    8:00 PM

   Charles Morrison       416/841-3523

   135 Timpson Drive; Aurora, ON L4G 5N2; CANADA


   Jackhammer's Backgammon           Jackhammers

   Scarborough, ON       Friday, Saturday            7:00 PM

   Al Jones              416/434-8113

   414 Century Street; Oshawa, ON LlK 1C6; CANADA


   Nat'l Capital Backgammon Club     Lunergan's Pub

   Vanier, ON            lst Sun./Sep.-Jun.         12:00 N

   Eden Windish          613/741-2530

   396 Talbot Street; Offawa, ON KlK 2N6; CANADA


   Le Gammon                         Clubroom

   Montreal, QB          Daily, Tour. Thur. & Sun.   2:00 PM

   Michel Medifti        514/845-8370

   552 St. Catherine East, Montreal, OB H2L 2E1; CANADA







Playing Backgammon in the Boston area

-------------------------------------



   From: mau@world.std.com (Michael A Urban)

   Date: 19 Oct 1993


   Frequently, membership fees are waived for initial participants.

   For complete details, contact the club of interest.



   Cavendish Club                         617-734-2230

   111 Cypress St.

   Brookline, MA  02146        USA        Fee:  $150/year


   The Cavendish runs chouettes on Thursday evenings and Saturday

   afternoons.  The club also has duplicate and rubber bridge.









   New England Backgammon Club            617-643-8154

   c/o Sheraton Commander Hotel           President:  Seth Towle

   16 Garden Street

   Cambridge, MA 02138-3609    USA        Fee:   $35/year


   The NEBC runs weekly Monday tournaments starting at 7pm and

   monthly Sunday tournaments beginning at 1pm.  No smoking is

   permitted in the tournament room.  The NEBC publishes, "Anchors",

   a monthly newsletter.


   [Note: There are no Sunday tournaments in July or August]

   [Note: Some Sunday tournaments start at noon. Nov and May in 93/94 season]







D2. Where are the tournaments?

++++++++++++++++++++++++++++++



   -- Look for ads in backgammon newsletters.

   -- Check backgammon clubs.

   -- Sometimes announcements are posted to the news group

      rec.games.backgammon.







D3. I'm looking for information about newsletters and other publications.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



Anchors

-------



   Anchors: Newsletter of the New England Backgammon Club

      Monthly except July, usually 8 pages, two devoted to local news

      with remaining to analytical material and backgammon related

      stories with minimal advertising.

      Subscription: USA/Canada/Mexico: $15/year.

                    Overseas: $25/year (check drawn on U.S. bank).

      Contact: NEBC

               c/o Sheraton-Commander Hotel

               16 Garden Street

               Cambridge, MA 02138-3609








Backgammon Magazine 

--------------------



   Backgammon Magazine

     Lately this has been published quarterly in a combined  German/English edition.


     Vertrieb

     Edith Johanni

     Emil-Nolde-Str. 26

     90455 Nurnberg

     Tel.: 0911/883253


     Redaktion (Editor)

     Harold Johanni

     Hochstr. 7

     90429 Nurnberg

     Tel.:0911/269567







BLITZ

-----



   BLITZ

      Bi-monthly, 24 A5 sized pages. in Danish. It is a newsletter/magazine

      for a BG club in Copenhagen. 4-6 pages are directed towrds the members

      of the club, the rest is general analysis, commentated matches,

      articles, problems etc. There is a quiz a la Inside BG's quiz. 4

      problems each issue, with the answers taking 4-6 pages.

      Subscription:  Scandinavia      Danish kr. 120

                     Europe                 Dkr. 140

                     Overseas (USA/Canada)  Dkr. 160

      Contact:       Asger Kring (proj13@srv.imsor.dth.dk)

                     Lykkesholms Alle 4B,3 th.

                     1902 Frederiksberg C.

                     Denmark

                     tlf: 3131 1439








Chicago Point Newsletter

------------------------



   Chicago Point Newsletter - A Prime Source of Backgammon Information

      Monthly newsletter, 10 pages:

      Subscription: USA/Canada/Mexico: $25/year.

                    Overseas: $35/year airmail in USD check drawn on

                              U.S. bank.

      Contact: Chicago Point

               Bill Davis, Editor

               2726 West Lunt Avenue

               Chicago, IL 60645








Flint Area Backgammon News

--------------------------



   Flint Area Backgammon News

      Monthly newsletter, 10 pages: Problem analysis, book and software

      reviews, tournament schedules and complete results, local, national

      and international backgammon news and views.  Full page catalog of

      backgammon merchandise.

      Subscription: USA/Canada/Mexico: $20/year or $200 lifetime.

                    Overseas: $25/year or $250 lifetime subscription.

      Contact: Carol Joy Cole, Editor

               3003 Ridgecliffe Drive

               Flint, Michigan 48532-3730 USA

               Phone/Fax: 810-232-9731.








Hoosier Backgammon Club Newsletter

----------------------------------



   Hoosier Backgammon Club Newsletter

      Bi-monthly, 8 pages: Articles/problems plus very issue

      non-annotated matches of todays best players.

      Subscription: USA: $10/years Canada/Mexico: $12/year.

                    Overseas: $14/year (cash or check drawn on US bank.)

      Contact: Butch & Mary Ann Meese

               Hoosier Backgammon Club

               7620 Kilmer Lane

               Indianapolis, IN 46256 USA








Inside Backgammon

-----------------



   Inside Backgammon

      Bi-monthly, 24 pages: Technical magazine with quizzes, articles and

      annotated matches by the best backgammon player today.

      Subscription: USA: $40/years

                    Canada/Mexico and oversea ground: $45/year.

                    Overseas airmail: $60/year (US funds).

      Contact: INSIDE BACKGAMMON

               P. O. Box 294

               Arlington, MA 02174  USA








International Backgammon Newsletter 

------------------------------------



   International Backgammon Newsletter

      [Address here]










D4. Backgammon books and book reviews.

++++++++++++++++++++++++++++++++++++++



BG books [summary] by Marty Storer

----------------------------------



   (From rec.games.backgammon)

   From: hunter@work.nlm.nih.gov (Larry Hunter)

   Subject: Bibliography

   Date: 21 May 92 20:11:35 GMT

   Sender: usenet@nlm.nih.gov (usenet news poster)


   One more for the FAQ.  Before Marty Storer left the list, I pestered him

   for an annotated bibliography.  He came through in grand style.  Here it

   is:


   Must have:


   _Backgammon_, Paul Magriel, NY Times/Quadrangle Press, New York 1976.

     The best introduction to the game.  Covers basic checker play very well.

     If you read and thoroughly understand this book, you'll play a decent

     game.  Weaknesses--skimpy treatment of the doubling cube.


   _Genud_vs_Dwek:_The_1981_World_Backgammon_Championship_ (or similar

   title), Bill Robertie, The GAMMON PRESS, Arlington, Mass. 1982.

     Very thorough coverage of the 25-point finals of the 1981 Monte Carlo

     tournament.  Goes into quite a bit of detail about ins and outs of match

     play.  Excellent section on backgames.  I've referred to this as

     Robertie(red) since it has a red cover 8-).


   _Backgammon_With_The_Champions_, Kent Goulding, ~1980-82.

     Series of annotated matches between good players.  Forget how many in

     all.  Excellent material, giving very good insight into how top players

     think.  Commentary by Goulding, often in collaboration with Kit Woolsey;

     both of these guys are very, very strong players.  Let's see, the

     matches are Seidel vs. Hodis; Magriel vs. Sconyers; Genud vs. Posner;

     Pasko vs.  Motakhasses; two (?) 5-point matches in one volume:  Lester

     vs. Horan and Woolsey vs. Pasko; Robertie vs. Senkiewicz; Goulding vs.

     Maxakuli; Dwek vs. Chafetz; Ballard vs. Lubetkin; Eisenberg vs.

     Magriel(?); and more I can't remember.  I can't recommend this series

     too highly (though Genud vs. Posner was a lousy match).


   _Advanced_Backgammon_ (2nd edition; two volumes), Bill Robertie,

     The GAMMON PRESS,  Arlington, Mass. '91.

     I haven't seen this yet--only the first edition of one volume.  Series

     of problems, giving very good introduction to truly advanced concepts.

     Errors in first edition are supposedly corrected.  The first edition is

     what I call Robertie(blue); the second is Robertie(white).


   _Backgammon_Times_, all back editions.

     This was a very good backgammon newspaper that was around in about

     '82-'83.  A lot of interesting articles by top players and analysts.

     Probably hard to get these days.


   _Reno_1986_, Bill Robertie, The Gammon Press, Arlington, Mass. 1987.

     Two annotated matches from the very strong Reno tournament of '86.

     Semifinal match is between Nack Ballard and Mike Senkiewicz; an

     excellent match, well annotated.  Finals between Ballard and Howard

     Markowitz.  The book is in quiz format, so you can test your skill

     against Ballard's (well, kind of:  Ballard had to find his moves

     over-the-board under great pressure--nothing like the finals of a big

     tournament to get the adrenalin flowing!).  I've only found a couple of

     mistakes in the annotations.  This book is referred to as

     Robertie(yellow).


   _World_Class_Backgammon_,_Move_By_Move_, Roy Friedman, 1989 or 90;

     forget other publication info.  Annotated matches between Robertie and

     "international star" Rick Barabino (Barabino is strong, but

     "international star"--I dunno...).  Three 9-point matches with some

     excellent games (check out the second game of the first match

     particularly).  Annotations are very good; Friedman put a lot of work

     into rolling out many of the diagrammed positions.  The annotation style

     is terse; Friedman takes a very scientific approach.


   _Vision_Laughs_at_Counting_ (two volumes), Danny Kleinman, ~1978.

   -all other material by Kleinman is "must have"--write to him at 5312-1/2

   Village Green, Los Angeles, CA 90016 and tell him I sent ya.

     Seminal work on match play, money play, doubling cube, races, and more.

     Kleinman is very prolific.  His analyses are often more mathematical

     than the average reader can handle, but Real Mathematicians [tm] and

     even the layperson with math aptitude shouldn't be fazed.  A Real

     Mathematician wouldn't call Kleinman's math "deep", but it sure is

     accurate, and you won't find anything similar anywhere else.  He does

     the important work of formulating the right problems the right way,

     where many others couldn't.


     Drawbacks:  his books are self-published with lousy layout and graphics.

     He's supposedly not that great a player (I've never seen him play), so

     his analyses often lack the world-class insight into the thought

     processes of the strong practical player that you could get from a

     Goulding or a Robertie.  In particular, his middle-game intuition seems

     less than world-class.  But these drawbacks are more than made up for by

     the wealth of information in his books, which I still haven't completely

     soaked up after many years.  Kleinman is a subtle thinker and a

     meticulous analyst of the countable, and he does a lot to develop

     backgammon "vision."  His stuff is often uproariously funny, but

     sometimes one gets impatient trying to filter out what's relevant to the

     practical player from the humor.


     I repeat--all his books are "must have's" for the serious player.

     They're a bit expensive since I think he bears all the production costs

     himself, but for the serious player they're worth every cent.


   Pretty Good Books But Not "Must Have's":


   _Backgammon_For_Profit_, Joe Dwek, Stein and Day, New York 1975 (out of

   print)

     Problems that would now be considered fairly basic.  Almost all

     solutions are right.  Tables of replies to opening moves show how badly

     people played in 1975.


   _Paradoxes_and_Probabilities_, Barclay Cooke, Random House, New York 1978.

     This is almost a "must have."  168 problems, most of which are very

     interesting.  Current thinking is that solutions to about a third of them

     are wrong, but the analysis gives very good insight into how Cooke, a

     first-generation world class player, thought about backgammon.


   _The_Doubling_Cube_In_Backgammon_, Jeff Ward, Aquarian Enterprises,

   San Diego 1982.

     Goes into basic doubling-cube concepts and gives some benchmark

     positions with equities derived from rollouts.  Gives some bearoff

     tables, etc.  Analysis of benchmark positions is pretty good but

     sometimes skimpy; Ward only admits to having done 100-200 rollouts to

     derive his equities.  Worth having.


   _Backgammon_Master_Games_, Bill Kennedy and Chuck Papazian, 1982 (forget

   other publication info).

     Annotated games and positions from master match play.  Analysis is

     largely based on intuitive concepts, and isn't well grounded in

     match-equity considerations etc.  Not well supported by rollouts; a fair

     amount of errors, but the analysis overall is pretty sound.


     Other books that I've read aren't worth much, including

     _Competitive_Backgammon_ Vol._II_, Mike Labins, Marty Storer, and Bill

     Tallmadge, Competitive Backgammon Publications, Syracuse 1981.  (It was

     good for the time but would be considered lousy now.)


   As I mentioned before, you can reach Gammon Press at (617)641-2091,

   fax: (617)641-2660 or PO Box 294 Arlington, MA 02174 USA


   Larry

   --

   Lawrence Hunter, PhD.

   National Library of Medicine

   Bldg. 38A, MS-54

   Bethesda. MD 20894

   (301) 496-9300

   (301) 496-0673 (fax)

   hunter@nlm.nih.gov (internet)



   [Note: Fax number edited to reflect the current number.]








BG books [summary] by John Bazigos

----------------------------------



   Article: 1666 of rec.games.backgammon

   Newsgroups: rec.games.backgammon

   From: johnsson@sara.cc.utu.fi (MIKA JOHNSSON)

   Subject: BG BOOKS INFO

   Date: Thu, 1 Jul 1993 10:20:19 GMT


   HI !


   Many people (last Snoopy) have asked about good BG books, well here is and

   answer that i got from John Bazigos (Doc), when I asked him about books


   -Mika


   BG BOOKS BY JOHN BAZIGOS


   The two best introductory books are Paul Magriel's "Backgammon" (New York

   Times Quadrangle Press; New York, NY; USA; 1976) and Enno Heyken's and

   Martin B. Fischer's "The Backgammon Handbook" (The Crowood Press;

   Ramsbury, Marlborough, Wiltshire SN8 2HE; Great Britain; 1990).


   The advantages of Magriel's "Backgammon" are, first, Magriel was a

   clear-minded, distinguished mathematician at the top of the backgammon

   world when he wrote it; second, it was the only truly analytic book on

   backgammon since Oswald Jacoby's and John R.  Crawford's "The Backgammon

   Book"; third, it rendered all backgammon texts preceding it (including

   "The Backgammon Book"), and even some subsequent backgammon texts,

   obsolete as introductory texts; fourth, it systematically elucidates

   backgammon strategy, from fundamental to intermediate to advanced; fifth,

   it does great justice to its topics in its well-diagrammed over-400 pages;

   and sixth, it has passed the test of time as an introductory text, having

   been commonly referred to as "The Bible" of backgammon.  Its disadvantages

   are, first, some important details of some advanced topics (e.g.,

   desirable back-game points), and even some major points of some

   beginning/intermediate topics (e.g., tradeoffs between positional and

   racing equity) are obsolete; second, the prose, though very readable, is

   structurally and stylistically weak; third, the text has been out-of-print

   since some time last year, though is well worth a search of *all* your

   local used/out-of-print bookstores; and fourth, though the publication

   price was $24.95, the only mail-order list on which I have found it prices

   it at $80, which makes a used/out-of-print bookstore an even better source

   -- since it is typically discounted to about $15 there, in my experience

   (here in the San Francisco Bay Area).


   The advantages of "The Backgammon Handbook" are, first, like "Backgammon",

   it systematically elucidates backgammon strategy; second, it contains the

   complete score, with some annotations, of the very illuminating, 26-game

   match between two-time World Backgammon Champion and leading bg theorist

   Bill Robertie and now-inactive international master Nack Ballard (Reno,

   1987) that the former described as "...perhaps the most interesting one

   I've ever played in my life!"; and third, it is still in print with a

   publication price of about $35.  Its disadvantages are, first, Heyken

   --though an International Master in chess-- does not have an international

   backgammon rating, and Fischer does not have a master rating in

   backgammon; second, it contains only about 60% as much text as

   "Backgammon", while not being significantly terser; and third, the

   authors' lack of qualifications is evidenced in some of their misleading

   and/or naive analyses.


   I think that you should search your local, or even not quite local,

   used/out-of-print bookstores for "Backgammon", and pay up to about $50 for

   it -- though if you find it in such a store, it is likely to be discounted

   to about $15; and then, if you cannot find it at a reasonable price, buy

   and read "The Backgammon Handbook" -- after which your time won't be best

   spent reading Magriel soon thereafter.


   > are you familiar with Danny Kleinmans books,


   I have read most of his "magnum opus" "Vision Laughs at Counting", which

   contains much sound advice on the practical aspects of bg play (e.g.,

   sections on bg hustlers, bg cheaters, chouette money management), seminal

   advice on handling the doubler, and even a few unprecedented mathematical

   characterizations of certain aspects of certain positions (e.g., how many

   pips to penalize a player for having one or more checkers on the bar).


   > are they good ?


   "Vision Laughs at Counting" is  generally insightful and often very

   amusingly written, but not suitable as an introductory text, sometimes

   obsolete, and sometimes simply wrong; and though it is the only text by

   Kleinman that I have read, I have good reason to believe that that

   judgment applies to Kleinman's other texts, as well.


   Ok; then after finishing "Backgammon" or "The Backgammon Handbook", study

   Jeff Ward's "The Doubling Cube in Backgammon" -- which has long been

   offered through Carol Joy Cole.


   Magriel's "Backgammon" routinely used to be, and sometimes still is,

   referred to as "the Bible (of backgammon)"; but since the publication of

   Robertie's three books on backgammon --i.e., "Lee Genud vs. Joe Dwek"

   (1982), "Advanced Backgammon" (1984 and 1991, the latter edition in two

   volumes), and "Reno, 1986" (1987)-- I think that it's more appropriate to

   refer to "Backgammon" and collectively those three as the Old and New

   Testaments of backgammon, respectively.  Given that you have already

   finished studying "The  Backgammon Handbook" and "The Doubling Cube in

   Backgammon", I think that you should read one or more books of Robertie's

   "New Testament" fairly soon after finishing Roy Friedman's "World Class

   Backgammon, Move-By-Move" -- which I, also, recently received a copy of

   from Carol Joy Cole, and is the backgammon book that I intend to read next.


   Well, from the quality perspective, I was significantly more impressed

   with it when perhaps the only bg literature I had read was typical junk

   from the 1970s (i.e., Bruce Becker's monumentally horrible "Backgammon for

   Blood", and Barclay Cooke's often-misleading "The Cruelest Game" and

   slightly-better "Championship Backgammon"), "The Backgammon Book", and

   Magriel's "Backgammon"; and from the price perspective, the decision is

   strictly yours, though I hereby make the following three interrelated

   claims:

    1.  If you read enough backgammon books, there will quite possibly

       come a time when "Vision Laughs at Counting" will be the best book

       for to read next to improve your technique maximally.

    2.  You are probably at least seven books from that point: "World Class

       Backgammon, Move-By-Move", the four volumes of backgammon's New

       Testament, and both volumes of Kent Goulding's "Backgammon With

       The Champions" are presently better for that purpose (and you can

       perhaps most profitably read them in that order).

    3.  "Vision Laughs at Counting" is the most entertaining

       instructional backgammon book that has been published to date.


   > BTW are there other good bg newspapers or magazines ?


   Last year was an unprecedentedly good one for backgammon periodicals, in

   that it saw the first issues of what I strongly believe were and still are

   the two best periodicals for backgammon theory ever --i.e., Bill Robertie'

   and Kent Goulding's bi-monthly "Inside Backgammon", and Roy Friedman's

   almost bi-monthly "Leading Edge Backgammon".  The former is still being

   published (I recently received my copy of the fourth issue of its second

   volume), and publication of the latter was suspended at the end of last

   year (due to some personal problems that Roy was having); but it was

   possible to order either or both of them from Carol the last time I

   checked (Please inform me if you need ordering information on either or

   both of them).


   Those are the only three backgammon periodicals to which I (have ever)

   subscribe(d), though that may change soon; more on that in a forthcoming

   e-mail message from me.


   > Do you know any technical papers about BG,


   One of the best features of both "Inside Backgammon" and "Leading Edge

   Backgammon" is they consist mostly of (what I would consider) technical

   papers on backgammon.


   >I have read Keelers and Spencers "optimal doubling in BG"


   So have I, but I have also read a paper co-authored by Zadeh, titled "On

   Optimal Doubling in Backgammon", that explicitly rendered that paper

   obsolete.  I'll provide you with more information on both that and other

   technical papers from the 1970s in a forthcoming e-mail message.


   > and in one AI-magazine was an article about Tesauros TD-gammon (about

     20 p)


   The second volume of "Inside Backgammon" contains about one article per

   issue on TD-Gammon, two of which document (recent) sessions that Robertie,

   Magriel, and at least one other bg master had against it; more on that,

   also, in an forthcoming e-mail message from me.








How to play tournament BG [book]

--------------------------------



   "How to play tournament BG" by Kit Woolsey



   This is an excellent introduction to how play and particularly cube

   handling varies in games.  It shows how to compute push and cash points,

   recube equity, how to figure gammon costs, etc.  It gives Kit's latest

   match equity chart and gives a method for remembering most of it fairly

   well.  If you play matches games and don't immediately recognize any of

   these terms, I strongly suggest reading it.


   -michael j zehr








Backgammon (Robin Clay) [book]

------------------------------



   Backgammon by Robin Clay  $7.95  NTC Publishing Group



   I was surprised to see this book for sale recently at a local book shop.

   This book was 'skimmed' by two intermediate players, and both immediately

   found that the some of the concepts and advice given were grossly

   incorrect. One of these 'reviewers', went as far as to say: "If your

   opponent says that he has just read this book, immediately raise the

   stakes!".


   ...Mark








In The Game Until The End... [booklet]

--------------------------------------



   In The Game Until The End: Winning In Ace-Point Endgames by Bob Watchel



   You've played an ace-point game; Your opponent is down to his last

   few checkers. Should you run? Should you stay? If your opponent wants

   to settle, what's the game worth? How aggressively should you try to

   pick up a second checker?


   If you don't know the answers to these critical questions, you need

   this book. In Chapter 4 alone you'll discover the secrets of the

   famous "Tino Road Position," an endgame so complicated that - once

   you know how to play it - you can take the position from either side

   and win. Olympiad Champion Bob Watchel has thoroughly analyzed

   hundreds of ace-point game positions to generate a complete picture

   of what's really going on in these common yet widely-misplayed

   situations.


   Soft bound, 112 Pages.  Level: Advanced and Serious Intermediate.

   Available from The GAMMON PRESS.  US$25 + Shipping


   [From a flyer from The GAMMON PRESS]








Learning From the Machine... [booklet]

--------------------------------------



   Learning from the Machine: Robertie vs. TD-GAMMON by Bill Robertie



   For years, computer backgammon was a languishing sideshow, with the

   best computer programs barely able to rise to the intermediate level.


   This all changed in 1991 with the emergence of TD-Gammon, an

   experimental neural network program developed at IBM's research

   labs. TD-Gammon taught itself to play, starting with a knowledge of

   the rules of the game. After playing thousands of games against

   itself, the program reached strong Open player level; within months,

   it became world-class. TD-Gammon plays like a strong human player in

   many parts of the game. In some areas, it plays quite unlike what has

   generally been accepted as "correct strategy" leading increasing

   numbers of top players to begin to experiment with some of

   TD-Gammon's unconventional plays. Here is your chance to see for

   yourself.


   Bill Robertie played two long matches against TD-Gammon as part of

   its evaluation process. "Learning from the Machine" is the complete

   account of the 31 games of the first match, with annotations by

   Robertie.



   Soft bound, 56 Pages.  Level: All.

   Available from The GAMMON PRESS.  US$20 + Shipping


   [From a flyer from the GAMMON PRESS]


   [Note: This is TD-GAMMON Version 1.?]









Other Books

-----------



   Other books seeking write-ups:


   -- Fascinating Backgammon by Antonio Ortega, Edited by Danny Klienman,

      forwarded by Carol Joy Cole and Neil Kazaross (English Version)


   -- Backgammon For Winners by Bill Robertie.  $6.95  Cardoza Publishing


   -- Backgammon With The Champions will be re-released by The GAMMON PRESS

      over the course of the next several years with modern commentary,

      presumably by Kent Goulding and/or Bill Robertie. The first match

      book is to be released around December 93.

      

      [ Seems a little dated now. Perhaps a decision not to go ahead was

        reached? ]







Danny Kleinman Books

--------------------



   A list of Danny Kleinman books (Backgammon)


                                                          Pages  Price (US$)

                                                          -----  -----------

   VISION LAUGHS AT COUNTING with ADVICE TO THE DICELORN    438  $64

   WONDERFUL WORLD OF BACKGAMMON                            132  $18

   MEANWHILE, BACK AT THE CHOUETTE                          142  $29

   DOUBLE-SIXES FROM THE BAR                                135  $19

   IS THERE LIFE AFTER BACKGAMMON?                          148  $21

   HOW CAN I KEEP FROM DANCING?                             134  $19

   THE DICE CONQUER ALL                                     228  $33

   HOW LITTLE WE KNOW ABOUT BACKGAMMON                      168  $25

   THE OTHER SIDE OF MIDNIGHT                               142  $20

   ... BUT ONLY THE HOGS WIN BACKGAMMONS                    244  $37

   A Backgammon Book For Gabriel.                           ???  $??








D5. A List of Backgammon Articles in Science and Business 

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



   [Original list submited by Mika Johnsson]


   E.B. Keeler, J. Spencer: "Optimal doubling in Backgammon", Operations

                            research Vol. 23 No. 6, November-December 1975


   David Levner: "is Brute Force Backgammon Possible ?", SIGART newsletter

                 No. 58, June 1976


   N. Zadeh and G.Kobliska: "On optimal doubling in backgammon" , Management

                             science 23, 853-858 (1977)


   Hans Berliner: "Backgammon computer program beats world champion",

                  Artificial intelligence 14 (1980), 205-220


   Hans Berliner: "Computer Backgammon", Scientific American 243:1, 64-72

                  (1980)


   G. Tesauro: "Neurogammon wins Computer Olympiad.", Neural computation 1,

               321-323 (1989)


   G.Tesauro, T.J.Sejnowski: "A parallel network that learns to play

              Backgammon", Artificial intelligence 39 (1989) 357-390


   G. Tesauro, ``Neurogammon: a neural network backgammon program.''

              IJCNN Proceedings vol. III, 33-40 (1990).


   G. Tesauro, ``Practical issues in temporal difference learning.''

              Machine Learning vol. 8, 257-277 (1992).


   G. Tesauro, ``TD-Gammon, a self-teaching backgammon program,

              achieves master-level play.'' Neural Computation, vol. 6,

              215-219 (1994).









D6. Backgammon software and software reviews.

+++++++++++++++++++++++++++++++++++++++++++++



BOINQ

-----



      Boinq is a program which analyzes bearoffs.  It can handle any

   position where both sides have all their men in the inner board.  All

   results are cubeless.  For any position you enter, you can get the

   probabality of each side winning, equity on a 1-cube, proper way to play

   any roll of the dice, and a distribution of probabality of bearing off in

   any number of rolls.  The results are displayed virtually

   instantaneously, since they are read directly from a data file rather

   than done by simulation.  Very user friendly and easy to use -- I use it

   a lot for a quick check on bearoff problems.  Program takes about 4 meg,

   so have some room on your hard disk.  Produced by Hal Heinrich -- cost is

   $100 I think.  Can contact Hal at:



              Hal Heinrich

              #203, 215 14th Ave. SW

              Calgary, AB

              Canada T2R 0M2



   Phone: (403) 234-9944

   E-mail address: heinrich@cuug.ab.ca


   Kit


   [Note: Also available from Carol Joy Cole]

   [Note: As far as I know, this is a PC program ...Mark]








Hyperbackgammon

---------------



      Hypergammon is a short version of backgammon where each side has

   three checkers.  In initial position, these checkers start on opponent's

   ace, two and three points.  From then on normal backgammon rules apply.

   Cube is in play, Jacoby rule, gammons and backgammons count (and are quite

   frequent).  Proper play is much more subtle than might be imagined.  The

   program produced by Hugh Sconyers plays the game perfectly, since Hugh has

   established a full data base which has the equities for all possible

   positions, and the program will tell you if you make an error.  It can be

   a lot of fun to play, the games go quickly, and by playing the program

   you learn pretty quickly the correct strategies.


   Kit


   [Note: Also available from Carol Joy Cole and The GAMMON PRESS] 

   [Note: As far as I know, the distribution is a CD-ROM for the PC ...Mark]








Matchqiz (and demo)

-------------------



        With the MatchQiz software, Kit Woolsey (long time contributer

   to Inside Backgammon and Backgammon with the Champions, author of

   How to Play Tournament Backgammon, and currently ranked #9 in the

   world) has added his name to the short list of backgammon

   indispensables.  The very short list.  Magriel, Robertie, Woolsey.

   I think that's all you really need.

        MatchQiz is more than very good; it is the single best tool I

   know of for transforming your game from intermediate to expert.

   First let me describe the format:

        You choose a match from a menu, and the computer shows you the

   starting position and opening roll.  *Then you choose your play.*

   Now you get to see the actual play, plus Kit Woolsey's commentary.

   This happens for every play, every cube decision.  It is an

   improvement over printed annotated matches in several ways:

        Convenience and speed.  How many times have you followed a

   match on your own board only to find that the moves and commentary

   have stopped making sense?  Perhaps you moved the wrong piece two

   rolls ago?  Or was it three rolls ago?  Maybe you should just start

   this game over.  Never again with MQ.

        How many hints do you receive when going over printed matches?

   You can see that the player drops the cube because a new game

   begins next page.  Or did the index card you use to cover the

   bottom of the page slip, denying you the chance to come up with

   your play without seeing Svobodny's?  Not with MQ.

        Perfect use of default options.  Do you have a tendency to

   forget the cube in complex positions?  MQ will let you make that

   mistake -- but will chide you for it.


        Of course the format wouldn't mean much if the annotations

   weren't up to par.  But they are exquisite.  Woolsey is complete,

   concise, and entertaining.  He covers all aspects of play, from the

   most elementary opening moves to the most subtle match equity

   considerations.  Here is one small sample:

        "This is an expert play which many players would not find.  If

   Magriel quietly plays 13/5, O'Laughlin will be free to make any

   point that his dice dictate, and Magriel will be poorly placed in

   the upcoming prime vs. prime battle since he will have two men back

   will O'Laughlin will have only one man back.  Magriel's play forces

   O'Laughlin to attack on the bar point whether he wants to or not,

   thus preventing him from making optimal use of such point making

   numbers as 42 or 51.  It is thematic when you have the better board

   and your opponent has one man back to split your runners to make it

   difficult for your opponent to catch up in the board-building

   battle."  You get this level of analysis after every nearly every

   play.

        One final benefit that might go unnoticed is volume.  Woolsey

   has 18 matches available now, and volume four is due soon.  That is

   quite a library.  Often an annotater will mention some general

   theme or principle and show how it applies it to a specific

   position.  But would that principle apply if the position were

   slightly different?  With the MQ library, you will be able to

   compare similar positions and examine if the same principles apply.

   This is especially true for the opening phase of the game, where

   the same sorts of decisions come up all the time.

        Woolsey sells one match for $20, or a set of 6 for $100.  This

   is a fantastic deal considering that most printed annotated matches

   go for $20 or so, and I guarantee that you'll get more use out of

   these.  Write to:


              Hal Heinrich

              #203, 215 14th Ave. SW

              Calgary, AB

              Canada T2R 0M2



   or call (403) 234-9944



   Jeremy Bagai



   [Note: Also available from Carol Joy Cole  and The GAMMON PRESS]

   [Note: This program is written for the IBM-PC, but it 'should'

    run under "Soft-PC" for the Macintosh, any level, as the graphics

    are CGA (640x200x2) ...Mark]








   From: kwoolsey@netcom.com (Kit Woolsey)

   Subject: Matchqiz Demo

   X-Newsreader: TIN [version 1.2 PL1]


   As many of you know, Hal Heinrich and I have produced several annotated

   matches which run on computer (PC only -- sorry, you MAC users).  Hal is

   the programmer, I wrote the annotations.  We have a demo match which we

   give away for free, so I thought it would be a good idea to make it

   available on the net both for the enjoyment of R.G.B. readers and, of

   course, to entice you to purchase the other annotated matches.  This is

   my first effort at doing this so I may have screwed up somewhere -- if

   so, please let me know what went wrong.


   The program can be gotten via an anonymous ftp to netcom2.netcom.com. go

   to the directory /pub/kwoolsey/gammon/matchqiz  -- there you will find 2

   files.  One is: readme, which is instructions for retrieving and running

   the program.  The other is: mqizdemo.exe, which is the program and

   necessary files.


   Feel free to distribute this demo package to any friends who may be

   interested.  If you run into any problems, please    contact me at:

   kwoolsey@netcom.com


                Kit Woolsey








Expert Backgammon

-----------------




               Expert Backgammon 2.1 for PC: List of features.


                    Mark Damish  E-Mail: damish@ll.mit.edu



   Here is some initial information on Expert Backgammon version 2.1 for

   the IBM PC.



   Intro:


         I remember November 92, the first time I walked into a backgammon

      club to participate in a tourney. After playing on FIBS for a month,

      I thought that I was already a decent player. Wrong. I won a match,

      and lost a match.  Afterwards, I played a few games for $1/point. I

      reached a simple and common holding game position where I was

      doubled, and thought surely it was worth 25%, and took. My opponent,

      being helpful to a newcomer, pointed out that the position was only

      worth about 15%. Later, I was able to verify his claim using Expert

      Backgammon, and had my first 'benchmark' position. I have since used

      Expert Backgammon to benchmark many other simple positions, as well

      as to play hundreds of games against it.



   What it is:


         Expert Backgammon, (EXBG), is a program which allows you to play

      backgammon against the computer either in a 'money' or 'tournament'

      format. It also allows you enter a position, and let the computer

      'roll it out' --- that is, to let it play both sides many times, and

      show you the results. Expert Backgammon is currently the strongest

      computer program available commercially, and the game version is

      quite affordable! Only TD-GAMMON might lay claim to being the

      strongest program in the world, but alas, it is not available

      commercially.



   Brief Description of EXBG versions:


         Expert Backgammon is currently available in two releases:  1.61,

      and 2.1.  Release 2.1 has 3 different versions, with different

      features


      EXBG 2.1  GAME VERSION    $50.  Plays the game of backgammon.

      EXBG 2.1  EXPERT VERSION $150.  Plays BG, and Rolls out positions.

      EXBG 2.1  PRO VERSION    $300.  Plays BG, and Rolls out positions. Has

                                      some advanced rollout features.


      EXBG 1.61 EXPERT VERSION $100   Plays BG, and Rolls out positions.


      Upgrades from EXBG 1.61[expert] to EXBG 2.1[expert]  $60

      Upgrades from EXBG 1.61[expert] to EXBG 2.1[pro]    $200

      There are other upgrades available for the other versions as well.



   Some Random Features (pro version):


      -- Fast non mouse interface for moving the checkers.

      -- Match or Money play options.

      -- Optional Jacoby rule.

      -- Cube profile statistics.

      -- Save positions for future evaluation.

      -- Save games to be played back later.

      -- Computer can suggest a move.

      -- Shot counter.

      -- Computer can finish game, when it becomes routine.

      -- Woolsey or 35% (Friedman?) match equity table for matches.

      -- Pip count.

      -- Quick or Extended cube searches. Speed vs. accuracy.

      -- Rollouts:

         -- Random dice.

         -- Sequenced dice for one or two sides. That is all 36 possible

            starting combinations for one or two sides.

         -- Rollout multiple positions simultaneously in batch mode.

         -- Duplicate dice when rolling out multiple positions.



   Performance:


      Speed: Less than 5 seconds per game to play a game from the starting

             position on a 486DX2-66 processer. This assumes that the

             graphical display is disabled. ie: moves and rolls are not

             shown.



      Strength: Seems stronger than 1.61.


         Strength is also a somewhat controversial subject. Can the machine

      play a complex prop as well as a human who is familiar with the

      position? Does the machine have any 'blind spots' in early game play?

      Can it 'work a prime' to get a second checker when needed? Does it

      blitz too often, not enough? 'Seems stronger' is as far as I'll

      venture until I learn more about how to play the game myself!

         See the section on 'How good is good' for Bill Roberties ratings

      of backgammon programs.



   Copy Protection:


         The program is copy protected. The distribution disks will allow

      you to install the program to two hard disks, as well as allowing you

      to run the program from the floppy. You may 'uninstall' the program

      from the hard disk, back to the floppy for installation on another

      disk/machine if required. It is best to uninstall the program before

      using backup programs, or reformatting your hard disk/partition, as

      you can loose your installation.

         Early versions of 1.61 used a differant scheme. They simply stopped

      running after a certain date. The authur supplies free updates to those

      with the early protection scheme.



   Sample Cube Analysis Screen:


                   B L A C K   C U B I N G   A N A L Y S I S


      C  U  B  E    Game won by - lost by    Gammons    Backgammons  Equity

   location  size   cube  play  cube play  won   lost  won    lost   /Game


     Center    1    47     3    22    8     4     9     0      0      0.108

     Black     2     8     0     0   11     0     0     0      1     -0.600

     Red       2     0    21     2    2     4     0     2      0      2.000

     Black     4     1     0     0    1     0     0     0      0      0.000

     Red       4     0     1     1    0     0     0     0      0      0.000

     Black     8     0     0     0    1     0     0     0      0     -8.000



                   01-21-1994  The Jacoby Rule was NOT USED

                   Only Money Play with Extended Cube Search

                   MARK won 61.074% of the games played


              Equity for MARK = 0.349 per game for 149  games

              Cubeless equity for MARK = 0.228


              Net equity when Black took a 2 cube = -0.870 per game

              Net equity when Red took a 2 cube  =  1.879 per game


      [An above average performance in this set.]



   Help Screen:


           F1 = MENU OF AVAILABLE OPTIONS - Professional Edition

   A - Automatic Double                  Ctrl+A - Automatic Concession

   B - Beaver                            Ctrl+B - Clear Board

   C - Checker Setup                     Ctrl+C - Cube Setup

   D - Double the Cube                   Ctrl+D - Manual Dice Entry

   E - Extended Cube Search              Ctrl+E - Match Equity

   F - New Player Name                   Ctrl+F - File - Alternate Path

   G - Game - Money or Match Play        Ctrl+G - Delete Game

   H - On-Line Help Service              Ctrl+H - Using Option Defaults

   I - Invert Position                   Ctrl+I - Alter the Starting Position

   J - Jacoby Rule                       Ctrl+J - Title for Rollout

   K - Monitor Type                      Ctrl+K - Player Cube Profile

   L - Level of Difficulty               Ctrl+L - Listing of Game

   M - Take Back Move

   N - Sound                             Ctrl+N - Start New Game

   O - Options Currently Selected        Ctrl+O - Open Position

   P - Player on Roll                    Ctrl+P - Print Position

   Q - Show PiP Count                    Ctrl+Q - Black Shotcounter

   R - Replay Game                       Ctrl+R - Rollout Position

   S - Speed of Checker Movement         Ctrl+S - Save Position

   T - Suggest Move for Black            Ctrl+T - Match Win % Table

   U - Skip Save Game/Position           Ctrl+U - Delete Position

   V - Black Detailed Shotcounter

   W - Expert to Finish the Game         Ctrl+W - Write Rollout to Disk

   X - Cancel Move and Reroll Dice       Ctrl+X - Print Disk Rollout

   Z - Zero the Score

   Spacebar - Roll the Dice              Escape - Leave EXBG



   Rollout summary printout:


                      EXPERT BACKGAMMON ROLLOUT SUMMARY


    Date: 12-12-1993                              Games viewed = 0

    File: 65_21_A                                 Summary only = 1296

    Version: 2.1                                  1296 games rolled out at

    Used Hrs:Min:Sec 1:37:41                      4.522 seconds per game.

                    Batched Duplicate Rollout of 1296  games.

                    No doubling allowed - Cube at 1 level


    [ Diagram of board position was cut from here...]


               O on roll.


                 O won

      45.83%     games        594

      11.42%    gammons       148

       0.46%  backgammons       6

      ---------------------------

      57.72% of the games     748

      +0.170 points per game.


                 X won

      32.18%     games        417

       9.41%    gammons       122

       0.69%  backgammons       9

      ---------------------------

      42.28% of the games.    548

      -0.170 points per game.


     The dice rolls were generated randomly.



     Note: There is also a screen which shows the results of several games

           rolled out simultaniously.


     Note: Above screens were 'captured' by redirecting my printer port to

           a file, and have been edited slightly.



   Ordering Info:


      Tom Weaver

      Expert Backgammon

      8063 Meadow Road, # 108

      Dallas, Texas

      75231


      Call: Expert Backgammon (214) 692-1234   M-F 10am-10pm Central US time.

                                               An answering service answers

                                               when Tom isn't around.


      Also available from Carol Joy Cole  and The GAMMON PRESS.









BG-SCRIBE

---------



          Software Review: BG-SCRIBE, A Program By Walter Trice.


                 Mark Damish (E-mail: damish@ll.mit.edu)



    BG-Scribe -- A system for editing, replaying, and printing

                 backgammon matches for the IBM-PC by Walter Trice.


    This is a program which I consider essential for myself. It will:


      --  Allow one to enter matches from books and magazines, or from those

          personally recorded, to be played back and studied later. Entry is

          done using the numeric keypad. After a while, you end up being able

          to enter a match very quickly, and become quite proficient at

          touch-typing the keypad to boot. An `AT' style keyboard is

          preferable for entering matches.


      --  Play back matches purchased from Walter. Watching great matches

          between the masters is definitely enlightening. My favorite matches

          are the ones from annotated books. It shouldn't be hard to

          write a program to convert a match from one format to another, if

          already have a collection of matches. I've converted matches posted

          to Internet by Butch Meese using nothing more than simple editor

          macros. The matches are currently stored as plain ASCII files---one

          directory per match, and one file per game.


      --  Print out matches to disk or printer. I like to: print out to disk,

          annotate my comments using a simple editor, then print the resulting

          file to a printer. The program will also embed diagrams of positions

          to the printout, but it uses IBM graphics characters, which might

          have to be changed if your printer doesn't support them. The diagram

          feature is especially useful for diagramming doubling decisions.


    The program is run from one of two screens. The first is a text

    screen with options for creating a new match, loading, saving, etc.


    The second screen displays the backgammon board using a CGA 4 color,

    40 column text mode. Trust me here---this mode, with its X's and O's,

    looks a lot better than backgammon boards I've seen drawn using the CGA 2

    color graphics mode. Why CGA text mode? Probably because it will run on

    any portable or palmtop machine, and likely on most PC emulators on other

    platforms. It also runs fine in a window under MS Windows, without having

    to mess around with a .pif file.


    The second screen is where matches are entered or played back. When

    playing back a match, you may see the dice, then the players choice, and

    then see the move when the screen is updated. It is possible to go forwards

    or backwards in a game. Although you may have entered your rolls in

    `landing spot' format, the program can optionally display them in

    `from/to' format. It only prints in the format which it was entered

    though. You may also mark positions which you would like to have

    diagrammed.


    As stated above, the user interface consists of two screens. Unlike

    modern X/Windows/Mac programs which do a lot for you, this program

    assumes that what you tell, or don't tell the program is exactly what you

    want. I.E.: You can enter data, then quit the program. If you didn't save,

    the program won't prompt you. It is like driving a standard after getting

    used to cruise control. The program does a lot, you have to remember to

    tell it what to do though! The learning curve has a slight incline, but

    the program is well worth the time it takes to become familiar with it.

    I found the instructions clear.


    I want to start bringing pen and steno paper to local events to record

    some `master games' for later entry/playback. I also want to review

    some of my `bad games', searching for weakness. There is a lot to be

    learned!


    The price of the program is $50, including 11 matches. Additional matches

    are available from Walter.


    I am not affiliated with BG-SCRIBE in any way, except for being a very

    satisfied customer.  Please mention where you saw this article if you

    should contact Walter. I did mention to him that I was going to write

    a review---Last spring!



    ...Mark



    Contact:     Walter G. Trice

                 549 Wachusett St.

                 Holden, MA 01520


                 (508) 829-3283










The Match Strategist (and demo)

-------------------------------



   Tom Johnson (komodo@netcom.com) has written a progam which is best

   described as a match equity calculator. Given: Match length, Score,

   Gammon chances, Cube value, and wether the cube is on the last roll,

   last two rolls, or a normal cube, the program will will calculate

   the information shown in the sample screen shown below.



                                     BLACK     WHITE      Menu

Input data                        ---------------------   -----

   match length (2 - 25)          |    3    |    3    |   L) Match length

   score (0 - 2)                  |    0    |    0    |   S) Score

   cube value                     |    1    |         |   C) Cube value

   chance of winning the game     |   35 %  |   65 %  |   W) Winning chance

   chance of winning a gammon     |   20 %  |   20 %  |   G) Gammon chance

   cube situation (1 - 3)         |    3    |    3    |   V) Cube situation

                                  ---------------------   N) New table

Static match winning chance with  ---------------------   X) Exit

   no double this game            |  45.99% |  54.01% |   A) About demo

   double and take                |  41.00% |  59.00% |

   double and drop                |  60.44% |  39.56% |   Cube situations

   double, take and redouble      |  35.00% |  65.00% |   ---------------

Dynamic data (game win %)         ---------------------   1) Last roll

   minimum give point             |  50.00% |   N/A   |   2) Last two rolls

   optimum give point             |  61.63% |   N/A   |   3) Normal cube

   minimum take point             |   N/A   |  30.43% |

   doubling window (size)         |  19.57% |  19.57% |   N/A = Not applicable.

                                  ---------------------

Strategy:  Black should not double.

           His position is not strong enough.



      THE MATCH STRATEGIST DEMO - copyright(c) 1994 Komodo Software



   The demo program is limited to 3-point matches and is available for

   anonymous ftp from:


   machine:   ftp.netcom.com

   directry:  pub/damish

   file:      matstrat.zip


   The program runs on a MS-DOS machine, and the file needs to be 'unzipped'

   with pkunzip 2.04 or later.


   A comercial version, which gives equities up to a 25-point match may be

   obtained from the auther for $45 + S&H.








rfibs (fibs recorder & playback) 

---------------------------------



   Newsgroups: rec.games.backgammon

   From: spitz@irb.uni-hannover.de (Jan Spitzkowsky)

   Subject: Recording and replaying games played on FIBS

   Date: Wed, 31 Aug 1994 10:00:21 GMT


   Hello fibsters,


   I wrote two utilities for FIBS and i want to distribute them. The tools are 

   able to record (rfibs) own games and watched games and to replay (sfibs) them. 

   I observe a lot of discussions about interesting positions in this group. 

   With 'rfibs' and 'sfibs' it is possible to extract special positions played 

   on FIBS (or even a whole game) and to comment it.

   I am interested in a collection of good and interesting games, commented or 

   not, to improve my own playing. If someone wants to get these utilities

   for collecting and sharing some games, too, the address of our ftp-server is: 


   ftp.irb.uni-hannover.de

   File: pub/spitz/bg/bg.tar.gz


   Below I give a short description of the two tools:


   Hope to find much interest for my work and many good games,


                                         Jan (hotspot on FIBS)


   Version 26th August 94:


   Any bug reports, comments ... etc.



   rfibs [<record file>] [-c]


   'rfibs' records games played on FIBS and filters the textual output. Therefore 

   the setting boardstyle must be set to 3 and the stdout of FIBS must be piped 

   through 'rfibs'. The correct call for 'rfibs' is: 'telnet <...> | rfibs <args>'.

   Two additional FIBS-commands are available with 'rfibs':

   - bstyle <b>: switches the board display. Additional board displays can be  

     created and added in the source 'boards.c' and 'fibs.h'. <b> currently 

     ranges from 0 to 1.

   - switch: switches the player and the board.

   - recinit: stops recording of the actual game.

   - comment <comment>: A comment is inserted into the record file.

   Every started, resumed or watched game will be stored in <record file>. Every 

   talk of the players or watchers will be included in the game as a comment. 

   The argument '-c' suppresses recording the talks as comments.

   The created file has the same syntax like the output of the FIBS-command

   'oldmoves'.


   Bugs:

      The prompt '>' is missing

      Prompts for login and password are missing, too.


   sfibs { <gamefile> [-g] | -p } [-y<b>] [-s]


   'sfibs' shows a recorded game given in <gamefile> The gamefile can be created 

      with 'rfibs' or with the FIBS-command 'oldmoves'. 

   Argument '-g' suppresses interaction: The whole game is printed.

   Argument '-y' gives the boardstyle. The available boardstyles are the same as 

      in 'rfibs'.

   Argument '-s' puts player O on the downside. Default is player X on the 

      downside.

   Argument '-p' doesn't show a game. It enables the user to create and to print 

      his own positions. 


   'rfibs' and 'sfibs' are given in the following files:

      readme, makefile, fibs.h, sfibs.c, rfibs.c, boards.c







D7. Where does one purchase backgammon supplies and books?

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



The GAMMON PRESS

----------------



       The GAMMON PRESS (Bill Robertie)

       PO Box 294

       Arlington, MA

       02174

       U.S.A.


       PHONE: (617) 641-2091

       FAX:   (617) 641-2660


       Books, software, video, backgammon sets, precision dice, ++.

       The GAMMON PRESS publishes Inside Backgammon, as well as books

       and booklets.








Carol Joy Cole

--------------



       Carol Joy Cole

       3003 Ridgecliffe Dr.

       Flint, MI

       48532

       U.S.A.


       (810) 232-9731.


       Books, software, backgammon sets, precision dice, cubes, ++.

       Carol Joy Cole is also the editor of the Flint Area Backgammon News.








Danny Kleinman

--------------



       Danny Kleinman

       5312 1/2 Village Green

       Los Angeles, CA

       90016

       U.S.A.


       Books on Backgammon, Bridge, O'Hell, and life.








Dansk Backgammon Forlag

-----------------------



       Dansk Backgammon Forlag

       Gersonsvej 25

       dk-2900 Hellerup

       Denmark

       phone: +45 39 40 06 07


       Books, sets, dice and generel backgammon equipment. You can get all

       the modern books there, plus some of the old ones from the seventies,

       among them 'Backgammon' (Magriel).








Crisloid

--------



   Crisloid INC.

   P.O. Box 2205

   Providence, Rhode Island

   02905


   tel: (401) 461-7200

   fax: (401) 785-3750


   They require a minimum order of $100 to obtain wholesale prices.








D8. An index of backgammon resources available on the Internet.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



   By Site:


   http://www.statslab.cam.ac.uk/~sret1/backgammon/main.html

      The World Wide Web backgammon page.   


   ftp.netcom.com  /pub/kwoolsey/gammon/matchqiz/matchqiz.exe

      matchqiz.exe      Match Qiz demo for DOS. Self extracting.


   ftp.netcom.com  /pub/pattib/backgammon/

      kvj_*.ps.gz      Kit Woolsey vs. Jeremy Bagai match. Postscript format.

                       Typeset by jrichter@aldebaran.cs.uni-sb.de

                                    (Joerg Richter)


   ftp.netcom.com  /pub/damish/

      bg-faq.html     A  Experimental hypertext version of FAQ 

      bg-rules.html   A  Backgammon Rules in formated hyper-text.

      bqdemo.zip      B  Walter Trices Bearoff Quizmaster Demo. (MS-DOS)

      fibshelp.html   A  Formated HTML of FIBS help screens. AUG 94

      kw_jb.tar.Z     B  Kit Woolsey vs. Jeremy Bagai match. Text version.

      matstrat.zip    B  MS-DOS demo of Tom Johnsons 'Match Strategist'.

      race.tar.Z      B  2 bearoff programs: 'race2' & 'race4'. No makefile


    figment.csee.usf.edu  /pub/misc/FIBS_client

     tiny-fugue        text interface to FIBS.


    itekiris.kjemi.unit.no  /pub

      xfibs07          X interface to FIBS.


    shuksan.cs.berkeley.edu  /pub/tkfibs/

      TkFibs           X Tk/Tcl interface to FIBS.


   resudox.net  /pub/pc/windows/games/fibsw/

      fibsw            MS Windows interface to FIBS.


   ftp.cd.chalmers.se  /pub/xibc/

      xibc-X.XX.tar.Z        X Tcl/Tk/Expect interface to FIBS.











Section E: MISC.

================



E1. What other games can be played on a backgammon board? 

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



   - Acey-Deucy

   - TricTrac

   - Jacquet

   - Moultezim

   - Plakto  (Portes)

   - Fevka (spelling?)

   - Narde

   - Three Checker Hyper Backgammon

   - Nackgammon

   - Cubeless, one point backgammon games.

   - Many versions of 'diceless' backgammon.

   - On some boards, you can flip it over, and play checkers or chess. :-)




Hyper Backgammon

----------------



   Newsgroups: rec.games.backgammon

   From: mau@world.std.com (Michael A Urban)

   Subject: Re: 3-Checker Hyper Backgammon

   Date: Thu, 14 Oct 1993 02:23:24 GMT


   Each side starts with 3 checkers on their respective 24, 23, and 22

   points.  The cube is in play.  Jacoby rule in effect.  Matches will start

   at 7 points and work their way up in later rounds.  All other normal

   backgammon rules apply.





Nackgammon

----------



   From: kleef@cs.utwente.nl (Rolf Kleef) at SMTP-Post-Office 10/15/93


   Nackgammon: The same as backgammon, but with a different starting

   position:  instead of five men on both your midpoint and 6-point, you just

   put four there.  The remaining two men end up at the 23-point:


       13 14 15 16 17 18       19 20 21 22 23 24

      +------------------------------------------+ X:

      | O           X    |   |  X           O  O |

      | O           X    |   |  X           O  O |

      | O           X    |   |  X                |

      | O                |   |  X                |

      |                  |   |                   |

     v|                  |BAR|                   |

      |                  |   |                   |

      | X                |   |  O                |

      | X           O    |   |  O                |

      | X           O    |   |  O           X  X |

      | X           O    |   |  O           X  X |

      +------------------------------------------+ O:

       12 11 10  9  8  7        6  5  4  3  2  1


   This was invented by Nack Ballard (hence the name), to force his bg

   students to practice positional play. Games tend to be much longer, since

   you can't easily start a race with a 65 or 66 opening-phase roll.  In July

   this year, we hosted the first European Championship Nackgammon during our

   series of Kater Cup tournaments. Teun Ruardy from Groningen, The

   Netherlands became the first EC Nackgammon!





Narde

-----



   From: zweije@wi.leidenuniv.nl (Vincent Zweije)


   In Kazachstan, and probably Russia too, people play a game called

   "Narde" on a backgammon board.  It is also played with 15 checkers

   each, in the following starting position (point numbering is taken from

   backgammon).


         O's side


          13 14 15 16 17 18       19 20 21 22 23 24

         +------------------------------------------+

         |                  |   |                OOO|

         |                  |   |                OOO|

         |                  |   |                OOO|

         |                  |   |                OOO|

         |                  |   |                OOO|

        v|                  |BAR|                   |^

         |XXX               |   |                   |

         |XXX               |   |                   |

         |XXX               |   |                   |

         |XXX               |   |                   |

         |XXX               |   |                   |

         +------------------------------------------+

          12 11 10  9  8  7        6  5  4  3  2  1


         X's side


   Do to language problems I never got a formal introduction to the game.

   I'll have to write down the rules out of my head.  It is played like

   backgammon, with the following exceptions:


    1: Both players move in the same direction.  X moves from 12 down to

       1, then to 24 and down to 13, and finally off; O moves from 24 down

       to 13, then to 12 and down to 1, and finally off.


    2: A point is already made with one checker on it.  There is no

       hitting in the game.


    3: Doublets are not special.  If you roll 3-3, you get to move a

       checker three pips twice.  Possibly the same checker.


   Bearing off is like backgammon.  Moving is mandatory when possible.  I

   don't know whether, like in backgammon, you have to move the higher of

   the dice if you have to choose.  It never happened during actual play.


   The game is almost fully one of chance.  The main thing is to take care

   not to get blocked by a six-point prime (already made with six checkers

   in a row!).


   [ There seems to be quite a few games with this starting postion,

     going the same direction, where 1 blot is a blocker, and there is

     no hitting. The rules vary with how many may be in a row, doubles,

     and starting criteria. It seems to be a game where 'blocking' is

     the predonimant strategy. Some games have double games, triple

     games, quad games, depending upon what quadrant the opponent has

     his remaining checkers in. I've never seen this played in the USA.

     ...Mark ]





Diceless Backgammon

-------------------



    From: igor@krest.kharkov.ukraine.ussr (Igor)

    Newsgroups: rec.games.backgammon

    Subject: Re: Diceless Backgammon?

    Date: 27 Mar 92 00:48:51 GMT

    Organization: Society of connoiseurs of female beauty


    In fact, there's a version of backgammon, which is much more popular

    than regular bg in USSR, especially in Azerbajdzhan and Uzbekistan.

    Main features are following:

    -both players go same direction ( namely counterclockwise )

    -starting position is different

    -you're not allowed to hit ( which changes strategy a lot).

    And, as far as I know, there are tournaments, where people play

    this version without dices, i.e. calling their rolls. Consequently,

    there exist time control in this tournaments.




Acey-deucy

----------



      In this game all the men start off the board. They enter and move

   around the board in the same way as men sent home in regular backgammon.

   In other words, the white men enter in black's home board and move around

   through black's outer board and white's outer board until all are gathered

   in white's home board; then white can start to bear them off. Black enters

   his men in the white home board and moves around in the same manner.

      Rules are the same as for backgammon, except that you can move any man

   you want to at any time, whether or not you have men to bring in.

      In addition, the roll of 1-2 -- acey-deucy -- is an especially valuable

   roll. You begin by playing your ace-deuce. Then you play any number four

   times (in other words, you pick any double you wish). Then you get an

   extra roll. and if this extra roll is also 1-2 you get the same extras

   with it.

      Early game strategy in acey-deucy is to try to establish advanced

   points as quickly as you can, and if possible also establish adjacent

   points as base for a prime. If both sides develop primes right smack up

   against one another, the advantage lies with the prime that is farther

   advanced. Even if the man with the farther-advanced prime has to break his

   first, he will probably win the game; if he can hold his prime longer, he

   almost surely will win.

      Credit: The Backgammon Book, Oswald Jacoby/John Crawford


   My own comments: Acey-deucy is a fun game, with a much greater element of

   luck or chance than regular backgammon. 1-2 rolls are deadly. You are

   never out-of-it right to the end. The pace is fast and furious (at least

   compared to regular backgammon -- which, incidentally, I still prefer, but

   Acey-deucy makes a nice change of pace once in a while). One key point of

   strategy -- block your opponent from a play of 1 or 2 if you can. This

   opportunity only occasionally presents itself, but watch for it. If you

   can't play your lowly 1-2, you lose the bonus double and extra roll.



      -- Acey-Deucy typed/submitted by Peter Nickless

         (nickless@ccs.carleton.ca)








E2. How does one become a better player?

++++++++++++++++++++++++++++++++++++++++



   [Suggestions/articles from ALL levels sought for this space]


   ----


   [Edited from a message about proper cube handling. ...Mark]


     Always play backgammon for affordable but meaningful stakes.  This

   is surprisingly important.  If you play "just for fun" you'll take

   doubles "to see how they'll turn out" and win some of those games

   anyway, giving yourself incorrect reinforcement.  Likewise you'll drop

   doubles you should take because "you dont' feel like playing it out."

   If something is riding on the game, you're much less likely to do that.

   In short, it hones the senses and makes you think about the cube all the

   time.  There is also definite penalties and rewards for correct cube

   action.


   Practice practice practice.


      -- michael j zehr







      I think the first step in becoming a good player is to realize what a

   game backgammon is. Many people think they're unlucky when they lose,

   and don't realize that it is actually also a game of skill.

      The first thing I learned from backgammon was to lose, even from the

   most incredible positions. You shouldn't spend your energy whining

   about your bad rolls, spend it on making good moves (and cube

   decitions!) instead.

      Other than that, it's simple to describe how to become a good

   backgammonplayer:  Study, and read all books you can get your hand

   on. If you go to a club or a tournament, watch the good players. One

   of my friends did that a lot when he started. Also, don't be afraid

   to ask strong players questions about a move you made, a move HE made

   or something like that. Most of the strong players are very friendly

   when people ask them about their opinion.

      You can also record matches. This can be matches between two good

   players, or you can have ask a friend to record one of your matches.

   There's a big difference in what you can learn from the former compared

   to the latter.

      I played a tournament in Chicago in '92 and recorded a couple of

   matches, one between Rick Barabino and Dean Muench. Afterwards I went

   through the match myself, and noted the plays I would certairnly not have

   made myself. I asked Dean Muench about why he did this and that, and he

   explained it in a very logical way to me. He asked me which flight i

   played in, I answeared 'Intermediate', and he said 'You won't be that for

   much longer if you keep studying like that!' I was also lucky to get an

   extremely interesting game in that match.

      If you get one of your friends to record your match, you get a chance to

   analyse your own play. This can particularly helpfull if you do it a while

   after the match has played, to see how (if) your game has evolved.


     -- Asger Kring







   [...]

   But a must if you want to reach a high level of backgammon skill is to build

   a positions database.  Study positions, and remember as many benchmark positions

   as you can.  The most costly mistakes are bad middlegame cube actions, and

   the more benchmarks you have available, the better your equity estimates can be,

   and the more accurate will be your related match-equity calculations.  Also, the less

   time you have to spend grunting and sweating over equities, the more time you'll have for

   figuring out your opponent--and you'll just have more energy, which is at a premium in

   long tournaments or money sessions.


        --Marty Storer







   Just study and play. What else is there?


        -- Roy Friedman







E3. Misc.

+++++++++




      -- Apparantly it is possable to receive and post to newsgroups via

         E-mail. Send mail to netnews@db.stanford.edu Put "help" in your

         message. You will receive a reply explaining how you can subscribe

         to all Usenet messages that contain a particular keyword or list

         of keywords in them. radev@news.cs.columbia.edu (Dragomir R. Radev)








Mark Damish <damish@ll.mit.edu>

Last modified: Thu Sep 15 11:45:25 1994 

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