Checker-capture Chess
Setup
Same as normal (FIDE) chess.
Rules
The standard rules of FIDE chess apply in general, with these differences:
- Captures by displacement cannot be made.
- Captures are made by short jumps, in any of 8 directions, and must be continued as long as possible (but you are not required to make the longest possible series of jumps).
- Captures by jumps must be made if possible, but you can select if there are multiple possibilities.
- No check/checkmate. Lose if your king is captured, also lose if you have no legal moves on your turn (stalemated).
- Castling is allowed out of check or through check. However, it is completely impossible to castle into check.
- No en-passan.
- Pawns only promote if the final position of the pawn is at the eighth row at the end of the full move.
For a simpler variation you can include these rules:
- No pawn double-step.
- No castling.
- Pawns at the eighth row do not promote immediately. If you are making a non-capturing move with a pawn starting from the eighth row, you may promote at that point, to a rook or knight or bishop or queen, and then immediately move.
There are also 2 additional variants you can play, with or without the simpler variation.
Misere:
- Win if your king is captured.
- Win if you have no legal moves on your turn (stalemated).
Semi-misere:
- Lose if your king is captured.
- Win if you have no legal moves on your turn (stalemated).
- Win if you have no pawns. (Pawns can be lost by being captured or by promoting)
Displacement:
- Displacement capture is also allowed.
- If you can jump, you still must jump instead of displacement capture.
- If jumping is not available and displacement capture is available, it is not required to make a displacement capture, you may make a normal move instead if you want to.
Notes
Here is the Zillions code for this game in case you want to see how it works, run it, or don't understand a rule and hope this will clarify it for you.
<![CDATA[(include "Z_GenImg.lib")
(define step1 ( $1 (verify empty?) add ))
(define step2 ( $1 $2 (verify empty?) add ))
(define ride ( $1 (while empty? add $1) ))
(define jumps ( $1 (verify enemy?) capture $1 (verify empty?) (add-partial jumping-move) ))
(define jumping-moves
(move-type jumping-move)
(jumps n)
(jumps ne)
(jumps e)
(jumps se)
(jumps s)
(jumps sw)
(jumps w)
(jumps nw)
)
(define step1oc ( $1 (verify enemy?) add ))
(define step1d ( $1 (verify not-friend?) add ))
(define step2d ( $1 $2 (verify not-friend?) add ))
(define rided ( $1 (while empty? add $1) (verify not-friend?) add ))
(game
(title "Checker-capture Chess (Normal)")
(players Red Cyan)
(board
(8x8board)
(vertical-symmetry Cyan)
)
(board-setup
(Red
(Pawn a2 b2 c2 d2 e2 f2 g2 h2)
(Knight b1 g1)
(Bishop c1 f1)
(Rook a1 h1)
(Queen d1)
(King e1)
)
(Cyan
(Pawn a7 b7 c7 d7 e7 f7 g7 h7)
(Knight b8 g8)
(Bishop c8 f8)
(Rook a8 h8)
(Queen d8)
(King e8)
)
)
(turn-order Red Cyan)
(loss-condition (Red Cyan) (captured King))
(loss-condition (Red Cyan) stalemated)
(move-priorities jumping-move normal-move)
(piece
(name Pawn)
(image_P)
(moves
(move-type normal-move)
(step1 n)
((verify (not-on-board? n)) (add-partial Queen Knight Rook Bishop normal-move))
(jumping-moves)
)
)
(piece
(name Knight)
(image_N)
(moves
(move-type normal-move)
(step2 n ne)
(step2 n nw)
(step2 s se)
(step2 s sw)
(step2 e ne)
(step2 e se)
(step2 w nw)
(step2 w sw)
(jumping-moves)
)
)
(piece
(name Bishop)
(image_B)
(moves
(move-type normal-move)
(ride nw)
(ride sw)
(ride se)
(ride ne)
(jumping-moves)
)
)
(piece
(name Rook)
(image_R)
(moves
(move-type normal-move)
(ride n)
(ride s)
(ride e)
(ride w)
(jumping-moves)
)
)
(piece
(name Queen)
(image_Q)
(moves
(move-type normal-move)
(ride nw)
(ride sw)
(ride se)
(ride ne)
(ride n)
(ride s)
(ride e)
(ride w)
(jumping-moves)
)
)
(piece
(name King)
(image_K)
(moves
(move-type normal-move)
(step1 nw)
(step1 sw)
(step1 se)
(step1 ne)
(step1 n)
(step1 s)
(step1 e)
(step1 w)
(jumping-moves)
)
)
)
(variant
(title "Checker-capture Chess (Misere)")
(win-condition (Red Cyan) (captured King))
(win-condition (Red Cyan) stalemated)
)
(variant
(title "Checker-capture Chess (Semi-misere)")
(loss-condition (Red Cyan) (captured King))
(win-condition (Red Cyan) stalemated)
(win-condition (Red Cyan) (pieces-remaining 0 Pawn))
)
(variant
(title "Checker-capture Chess (Including displacement capture)")
(piece
(name Pawn)
(image_P)
(moves
(move-type normal-move)
(step1 n)
(step1oc nw)
(step1oc ne)
((verify (not-on-board? n)) (add-partial Queen Knight Rook Bishop normal-move))
(jumping-moves)
)
)
(piece
(name Knight)
(image_N)
(moves
(move-type normal-move)
(step2d n ne)
(step2d n nw)
(step2d s se)
(step2d s sw)
(step2d e ne)
(step2d e se)
(step2d w nw)
(step2d w sw)
(jumping-moves)
)
)
(piece
(name Bishop)
(image_B)
(moves
(move-type normal-move)
(rided nw)
(rided sw)
(rided se)
(rided ne)
(jumping-moves)
)
)
(piece
(name Rook)
(image_R)
(moves
(move-type normal-move)
(rided n)
(rided s)
(rided e)
(rided w)
(jumping-moves)
)
)
(piece
(name Queen)
(image_Q)
(moves
(move-type normal-move)
(rided nw)
(rided sw)
(rided se)
(rided ne)
(rided n)
(rided s)
(rided e)
(rided w)
(jumping-moves)
)
)
(piece
(name King)
(image_K)
(moves
(move-type normal-move)
(step1d nw)
(step1d sw)
(step1d se)
(step1d ne)
(step1d n)
(step1d s)
(step1d e)
(step1d w)
(jumping-moves)
)
)
)]]>
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By (zzo38) A. Black.
Web page created: 2008-12-28. Web page last updated: 2009-01-10
