Dice chess

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Dice chess can refer to a number of chess variants in which dice are used to alter gameplay; specifically that the moves available to each player are determined by rolling a pair of ordinary six-sided dice. There are many different variations of this form of dice chess.[1] One of them is described here.

Rules[edit]

The players alternate rolling the dice and, if possible, moving. On each die, the 1 represents a pawn, 2 a knight, 3 a bishop, 4 a rook, 5 a queen, and 6 a king. The player may move either of the pieces indicated on the two dice. For example, a player rolling a 1 and a 2 may move either a pawn or a knight. A player who rolls doubles (the same number on both dice) may play any legal move. Otherwise, standard chess rules apply, with these exceptions:

  • a player who has no legal move with either of the pieces indicated by the dice loses that turn (passed turn);
  • if castling is otherwise legal, a player may castle upon rolling a 4, 6, or doubles;
  • an en passant capture of a pawn is possible only if the player rolls a 1, or doubles, immediately once the opportunity for the en passant capture arises;
  • a player who is in check can only play a legal response to that check (capturing the checking piece, moving the king, or interposing a piece);
  • a player who is in check but does not make a roll allowing a legal response to the check loses that turn, but does not automatically lose the game;
  • except in the unlikely event that the game ends in a draw pursuant to the standard rules of chess, the game ends when one player either checkmates the opponent or captures the opponent's king.

Sample game[edit]

abcdefgh
8
Chessboard480.svg
b8 black rook
c8 black bishop
d8 black queen
e8 black king
f8 black bishop
g8 black knight
h8 black rook
a7 black pawn
b7 black pawn
c7 black pawn
d7 black pawn
e7 black pawn
f7 white bishop
g7 black pawn
h7 black pawn
c6 black knight
g5 white knight
e4 white pawn
a2 white pawn
b2 white pawn
c2 white pawn
d2 white pawn
f2 white pawn
g2 white pawn
h2 white pawn
a1 white rook
b1 white knight
c1 white bishop
d1 white queen
e1 white king
h1 white rook
8
77
66
55
44
33
22
11
abcdefgh
Black is checkmated.

Here is a sample game of dice chess:

White rolls doubles, allowing her to play any move, and selects 1.e4. Black rolls a 2 and a 3; no bishop move being possible, he plays 1...Nc6. White rolls a 3 and a 4, and plays 2.Bc4. Black rolls a 4 and a 5; since no queen move is possible, he must play the only legal rook move, 2...Rb8. White rolls a 3 and a 6, and plays 3.Bxf7+. Black rolls a 2 and a 4; since no knight or rook move is a legal response to the check, he must pass. (Only a 6, or doubles, would have allowed him to move.) White rolls a 2 and a 4, and chooses 4.Nh3. (A 3 or 5 would have enabled an immediate win with 4.Bxe8, 4.Qf3# or 4.Qh5#). Black rolls a 1 and a 3; again, this does not allow a legal response to the check, so he must pass. White rolls a 2 and a 4, and plays 5.Ng5#, ending the game (see diagram).

Rules variants[edit]

There is no standard ruleset for dice chess, and so games called dice chess may have different rules to the ones given here.

For example, in the version of dice chess given on the BrainKing site:[2]

  • The players roll only one die.
  • Pawns may move from the seventh to the eighth rank not only on a roll of 1 (when they promote to a piece of the player's choice), but also on a roll of 2, 3, 4 or 5 (when they can promote only to the piece specified by the roll).
  • There is no check or checkmate. Rather, the goal is to actually capture the king.
abcdefghij
10a10 black rookb10 black knightc10 black bishopd10 black queene10 black kingf10 black kingg10 black kingh10 black bishopi10 black knightj10 black rook10
9a9 black pawnb9 black pawnc9 black pawnd9 black pawne9 black pawnf9 black pawng9 black pawnh9 black pawni9 black pawnj9 black pawn9
8a8b8c8d8e8f8g8h8i8j88
7a7b7c7d7e7f7g7h7i7j77
6a6b6c6d6e6f6g6h6i6j66
5a5b5c5d5e5f5g5h5i5j55
4a4b4c4d4e4f4g4h4i4j44
3a3b3c3d3e3f3g3h3i3j33
2a2 white pawnb2 white pawnc2 white pawnd2 white pawne2 white pawnf2 white pawng2 white pawnh2 white pawni2 white pawnj2 white pawn2
1a1 white rookb1 white knightc1 white bishopd1 white queene1 white kingf1 white kingg1 white kingh1 white bishopi1 white knightj1 white rook1
abcdefghij
Dice chess on 10×10 board

BrainKing also provides a variant on 10×10 board with three kings on each side.[3] To win you need to capture all enemy kings. All other rules are the same as for the 8×8 version. The intention of adding two more kings is to reduce the elements of chance in the game.

Another form of dice chess is Vegas Fun Chess, whose rules are described on The Chess Variant Pages.[4] That site also states that "Pritchard's Encyclopedia of Chess Variants contains descriptions of seven versions of what he calls 'Dice Chess'."

John Gollon, in his book Chess Variations: Ancient, Regional, and Modern, notes three ways in which dice may be used in connection with a game of chess. The most common is similar to that described in the preceding sections. A second way to use dice is to have each player roll one die on each turn, with the number rolled indicating the number of moves to be played. The maximum number of moves that can be played is usually four, so a roll of a 4, 5, or 6 allows the player to make four moves. A third form of the game uses two dice of contrasting colors, with one determining the piece that can move, and the other the number of moves that the piece makes.[1]

History[edit]

Anne Sunnucks writes that there is evidence from the literature of the period that dice were used to play chess in Europe between the 11th and 14th centuries, and even earlier in Burma and India. The dice were thrown before each turn to determine the piece to be moved; the same numbering system as set forth above was used (1=pawn, 2=knight, etc.).[5] In the Burmese form of the game, three dice were thrown and each player made three moves at a time.[6] Vladimir Pribylinec writes that the cubes in Cubic Chess move as in orthochess by a symbol uppermost as is described in both editions of Pritchard's Encyclopedia of Chess Variants, first published in 1977. In the variant Protheus cubes are turned on the adjacent squares.

See also[edit]

References[edit]

  1. ^ a b John Gollon, Chess Variations: Ancient, Regional, and Modern, Charles E. Tuttle Company, 1974, pp. 231–32. ISBN 0-8048-1122-9.
  2. ^ BrainKing Dice Chess rules
  3. ^ BrainKing Dice Chess 10×10 rules
  4. ^ Collins, Edward D.; Howe, David (1998-08-25). "Vegas Fun Chess". The Chess Variant Pages.
  5. ^ Anne Sunnucks, The Encyclopaedia of Chess, St. Martin's Press, 1970, pp. 97–98. Sunnucks does not make clear if only one die or both dice were thrown, and, if the latter, whether the player could choose which of the specified pieces to move.
  6. ^ Sunnucks, p. 98.