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-
- Backgammon
- ----------
- The Board
- ---------
- Refer to the MaxGammon board for the layout of a backgammon board and the
- pieces on it.
-
- The game board is divided into four parts, each with six "points", in
- alternating colours. The two sides are referred to as black and white
- (by default "black" is red in MaxGammon). The two players move in opposite
- directions around the board.
-
- The vertical dividing bar of the board is referred to as the "bar" and the
- two halfs of the board on either side are referred to as the inner and
- outer table, where the inner table is the final destination of all pieces.
-
- The Object
- ----------
- The object of the game is to move all of your pieces around the table, away
- from your opponent's inner table and into your own and then off the board.
-
- The Play
- --------
- The rules of backgammon state that, before starting, both players throw one
- die in order to determine who will play first. If both players throw the same
- number then they throw again until one player throws a higher number than the
- other. That player then moves first using the numbers shown on the two dice
- just thrown. In MaxGammon white always plays first.
-
- From then on play alternates with the players throwing two dice to determine
- what moves are available. Cocked dice, where one of the dice has not landed
- flat, means that the player must throw again.
-
- The numbers on the dice are considered individually, not in total. The player
- moves a piece the number of points shown on each die, this may be the same
- piece moved for each die or a different piece for each die. When the two die
- show the same number this is known as "doublets" and the player uses each die
- number twice, in any combination of moves.
-
- A player MUST use all available numbers if possible. If less than the full
- throw can be used then the largest possible move or combination of moves must
- be made. If a player cannot move then play passes to the opponent.
-
- Blocked Points and Blots
- ------------------------
- Any point on which two or more pieces reside is considered blocked. A player
- may not move a piece onto a point blocked by the opponent's pieces. A blocked
- point may be stepped over in an individual move. A player owning a blocked
- point is said to have "made the point".
-
- Any point on which only one piece resides is known as a "blot". Pieces of
- different colours may not occupy the same point, therefore when an opponent
- lands on a blot the piece on that point is moved to the bar in the centre of
- the board. The action of landing on an opponent's bot is called a "hit".
-
- The Bar
- -------
- No piece may be moved by a player while that player has one or more pieces on
- the bar. Pieces are moved of the bar into the opponent's inner table with the
- point furthest from the player's inner table being the nearest point to the
- bar (i.e. a die throw of one is needed to reach it).
-
- Bearing Off
- -----------
- Bearing off refers to removing pieces from the playing board using the dice
- rolled. Players may only bear off when all their pieces are in their own
- inner table. As stated earlier, if possible the numbers on the dice must be
- used as fully as possible, even when bearing off.
-
- Winning
- -------
- The first player to bear off all their pieces is the winner. If the opponent
- has not born off any pieces then the player has won a gammon (double game).
- If the opponent has pieces in the player's inner table or on the bar and has
- not born off any men then the player has won a backgammon (triple game).
-
- Doubling (NOTE - MaxGammon does not support doubling)
- --------
- When a game is started the doubling die is placed on the bar with 64
- uppermost, indicating no doubling has occurred. When the first double occurs
- the 2 is placed upermost and subsequent doubles mean that the next highest
- number is used. An automatic double is made each time their is a tie when
- throwing dice to decide who goes first.
-
- Players may offer to double whenever it is their turn and before they have
- thrown the dice. A double may be accepted or declined, but the player
- declining loses whatever the stakes were before the double was offered.
- Thereafter doubling alternates between the players.
-
- At the end of the game the state of the doubling die, if any doubling has
- occured, is used to determine the value of the game, together with any gammon
- or backgammon value.
-
- MaxGammon 2.0 (C) Ray Loades-Bannon, 1989
-