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Re: the name of a game of chess
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Tom Ritchford
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Jun 05, 2001 15:07 PDT
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oops!
we need to know which player is on the move to
completely disambiguate the position.
| | 2. by board position
2.1. a naming convention.
p, r, n, b, k, q are black
P, R, N, B, K, Q are white
write from top left to bottom right
either the piece name, or the number of spaces.
so a game would look like:
rnbqkbnrpppppppp32PPPPPPPPRNBQKBNR
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rnbqkbnrpppppppp20P11PPPP1PPPRNBQKBNRAcdCD
| | rnbqkbnrpppppppp20P11PPPP1PPPRNBQKBNR after one move
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rnbqkbnrpppppppp20P11PPPP1PPPRNBQKBNRacdCD
| | rnbqkbnrpp1ppppp10p10P11PPPP1PPPRNBQKBNR after two moves
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rnbqkbnrpp1ppppp10p10P11PPPP1PPPRNBQKBNRAcdCD
| | rnbqkbnrpp1ppppp10p1P19PPPP1PPPRNBQKBNR
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rnbqkbnrpp1ppppp10p1P19PPPP1PPPRNBQKBNRacdCD
| | rnbqkbnrpp2pppp10ppP19PPPP1PPPRNBQKBNR
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rnbqkbnrpp2pppp10ppP19PPPP1PPPRNBQKBNRAcdCDv
| | (can you do this without a board??)
to disambiguate positions, you'd also encode other data
about en passant and castling information some of the time.
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and, DOH!, about which player is on the move!
a, A means it's black, white to move
| | c, C means black, white can castle king side
d, D means black, white can castle queen side
s,t,u,v,w,x,y,z are the 8 possible files for ep capture.
so the last position would be completely disambiguated with:
rnbqkbnrpp2pppp10ppP19PPPP1PPPRNBQKBNRcdCDv
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rnbqkbnrpp2pppp10ppP19PPPP1PPPRNBQKBNRAcdCDv!
.....all legal games of chess <http://solveChess.com/chess?refresh=0>...
........formal model of chess <http://solveChess.com/chess>.............
...programmer's documentation <http://solveChess.com/doc>...............
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