; *** Chigorin Chess ; *** Based on Zillions v.1.2 Chess ZRF, which is ; Copyright 1998-2000 Zillions Development ; v.1.0 ; You need to purchase Zillions of Games to load this rules file ; Visit the Zillions web site at http://www.zillions-of-games.com (define leap1 ($1 (verify not-friend?) add) ) (define leap2 ($1 $2 (verify not-friend?) add) ) (define king-shift ($1 (verify not-friend?) (set-attribute never-moved? false) add) ) (define slide ($1 (while empty? add $1) (verify not-friend?) add)) (define rook-slide ( $1 (while empty? (set-attribute never-moved? false) add $1) (verify not-friend?) (set-attribute never-moved? false) add )) (define O-O ( (verify never-moved?) e ; KB1 (verify empty?) e ; KN1 (verify empty?) cascade e ; KR1 (verify (and friend? (piece? Rook) never-moved?) ) from back ; K1 ; Save expensive not-attacked?s for last (verify not-attacked?) e ; KB1 (verify not-attacked?) to (set-attribute never-moved? false) ; We could check if KN1 is attacked too, but this isn't ; really necessary since Zillions doesn't allow any moves ; into check e ; KN1 (set-attribute never-moved? false) add ) ) (define O-O-O ( (verify never-moved?) w ; Q1 (verify empty?) w ; QB1 (verify empty?) cascade w ; QN1 (verify empty?) w ; QR1 (verify (and friend? (piece? Rook) never-moved?) ) from back ; K1 ; Save expensive not-attacked?s for last (verify not-attacked?) w ; Q1 (verify not-attacked?) to (set-attribute never-moved? false) ; We could check if KN1 is attacked too, but this isn't ; really necessary since Zillions doesn't allow any moves ; into check w ; QB1 (set-attribute never-moved? false) add ) ) (define Pawn-add (if (in-zone? promotion-zone) (add Knight Bishop Rook Queen Chancellor) else add) ) (define Pawn-move ( n (verify empty?) (Pawn-add) (verify (in-zone? third-rank)) n (verify empty?) add ) ) (define Pawn-capture ( $1 (verify enemy?) (Pawn-add) ) ) (define En-Passant ( $1 (verify enemy?) (verify last-to?) (verify (piece? Pawn)) capture n to n (verify last-from?) add ) ) (define Board-Definitions (image "images\Chess\Chess8x8.bmp") (grid (start-rectangle 5 5 53 53) (dimensions ("a/b/c/d/e/f/g/h" (49 0)) ; files ("8/7/6/5/4/3/2/1" (0 49)) ; ranks ) (directions (n 0 -1) (e 1 0) (s 0 1) (w -1 0) (ne 1 -1) (nw -1 -1) (se 1 1) (sw -1 1) ) ) (symmetry Black (n s)(s n) (nw sw)(sw nw) (ne se)(se ne)) (zone (name promotion-zone) (players White) (positions a8 b8 c8 d8 e8 f8 g8 h8) ) (zone (name promotion-zone) (players Black) (positions a1 b1 c1 d1 e1 f1 g1 h1) ) (zone (name third-rank) (players White) (positions a3 b3 c3 d3 e3 f3 g3 h3) ) (zone (name third-rank) (players Black) (positions a6 b6 c6 d6 e6 f6 g6 h6) ) ) (game (title "Chigorin Chess") (description "Object: Checkmate the opponent's King by attacking it so it cannot escape. To see a description of how a piece moves right-click on it to bring up its properties dialog. \\ Chigorin Chess differs from the usual Western Chess in that one side has a Queen and Bishops but no Knights, and the other side a Chancellor and Knights but no Bishops.") (history "Chigorin was a great chess genius, a deep calculator, and a strategic wizard, but was never the world champion. \\ Today he is mostly remembered as a player who preferred Knights to Bishops. He didn't, really; instead, he had a more modern understanding of the relative values than his contemporaries, he realized that it all depends on the position, and that losing a tempo to get B for N is usually a bad idea. \\ Game of Ralph Betza, ZRF by Peter Aronson. \\ ZRF Revision 1.0, Aprith 28th, 2002.") (strategy "In the opening, try to develop your pieces more than your pawns. Always protect your King. Look for ways to exchange lower valued pieces for larger valued ones. Generally, if a Pawn is worth 1 point, then a Bishop or Knight is worth 3, a Rook is worth 5 and a Queen or Chancellor worth 9 points.") (win-sound "Audio\Orchestra_CF.wav") (loss-sound "Audio\Orchestra_FC.wav") (click-sound "Audio\Pickup.wav") (release-sound "Audio\WoodThunk.wav") (players White Black) (turn-order White Black) (pass-turn false) (recycle-promotions true) (board (Board-Definitions)) (board-setup (White (Pawn a2 b2 c2 d2 e2 f2 g2 h2) (Knight b1 g1 c1 f1 off 8) (Rook a1 h1 off 8) (Chancellor d1 off 8) (King e1) ) (Black (Pawn a7 b7 c7 d7 e7 f7 g7 h7) (Bishop b8 g8 c8 f8 off 8) (Rook a8 h8 off 8) (Queen d8 off 8) (King e8) ) ) (piece (name Pawn) (help "Pawn: moves forward, captures diagonally, can promote on 8th row") (description "Pawn\A Pawn can move straight ahead one square, or two squares from its starting position. A Pawn captures by moving one square ahead and diagonally. If a Pawn reaches the far rank it promotes, changing into a Knight, Bishop, Rook, or Queen. On rare occasions Pawns can also execute a move called `En Passant`, or `in passing`. This allows a Pawn to take an enemy Pawn that has just moved two squares.") (image White "images\Chess\wpawn.bmp" Black "images\Chess\bpawn.bmp") (moves (Pawn-capture nw) (Pawn-capture ne) (Pawn-move) (En-Passant e) (En-Passant w) ) ) (piece (name Knight) (help "Knight: moves like an `L`, 2 squares one way and one the other") (description "Knight\A Knight moves like an `L`, two squares vertically plus one horizontally, or two squares horizontally plus one vertically. It hops over any pieces on the way.") (image White "images\Chess\wknight.bmp" Black "images\Chess\bknight.bmp") (moves (leap2 n ne) (leap2 n nw) (leap2 s se) (leap2 s sw) (leap2 e ne) (leap2 e se) (leap2 w nw) (leap2 w sw) ) ) (piece (name Bishop) (help "Bishop: slides diagonally any number of squares") (description "Bishop\A Bishop moves any number of squares on a diagonal. It may not leap over other pieces.") (image White "images\Chess\wbishop.bmp" Black "images\Chess\bbishop.bmp") (moves (slide ne) (slide nw) (slide se) (slide sw) ) ) (piece (name Rook) (help "Rook: slides any number of squares along the row or column.") (description "Rook\A Rook moves any number of squares orthogonally on a rank or a file. It may not leap over other pieces.") (image White "images\Chess\wrook.bmp" Black "images\Chess\brook.bmp") (attribute never-moved? true) (moves (rook-slide n) (rook-slide e) (rook-slide s) (rook-slide w) ) ) (piece (name Chancellor) (help "Chancellor: slides orthogonally any number of spaces, or jumps like a Knight") (description "Chancellor\A Chancellor moves any number of squares orthogonally, or jumps like a Knight. It may not leap over other pieces when sliding, but may when jumping.") (image White "images\Chess\wknightrook.bmp" Black "images\Chess\bknightrook.bmp") (attribute can-castle? false) (moves (leap2 n ne) (leap2 n nw) (leap2 s se) (leap2 s sw) (leap2 e ne) (leap2 e se) (leap2 w nw) (leap2 w sw) (slide n) (slide s) (slide e) (slide w) ) ) (piece (name Queen) (help "Queen: can slide any number of squares in any direction") (description "Queen\A Queen moves any number of squares in a straight line. It may not leap over other pieces.") (image White "images\Chess\wqueen.bmp" Black "images\Chess\bqueen.bmp") (moves (slide n) (slide e) (slide s) (slide w) (slide ne) (slide nw) (slide se) (slide sw) ) ) (piece (name King) (help "King: steps 1 square in any direction to a safe square") (description "King\A King can move to any adjacent square, but never to a square where it can be captured. It may also `castle` with the Rook if neither the Rook nor King has moved yet and there is nothing in between them. In castling the King moves two squares nearer the Rook and the Rook leaps to the far side of the King. You may not castle out of or through check, or if the King or Rook involved has previously moved.") (image White "images\Chess\wking.bmp" Black "images\Chess\bking.bmp") (attribute never-moved? true) (moves (king-shift n) (king-shift e) (king-shift s) (king-shift w) (king-shift ne) (king-shift nw) (king-shift se) (king-shift sw) (O-O) (O-O-O) ) ) (loss-condition (White Black) (checkmated King) ) )