Author: blass uri
Date: 10:54:26 05/28/00
Go up one level in this thread
On May 28, 2000 at 13:14:23, Bruce Moreland wrote: >On May 28, 2000 at 08:31:45, Vincent Lejeune wrote: > >>On May 27, 2000 at 19:47:12, Bruce Moreland wrote: >> >>>On May 27, 2000 at 08:47:17, Terje Vagle wrote: >>> >>>>Can your program find ..sf5+!! >>>> >>> >>>[D] 8/8/3nk3/8/p5PB/4K3/P7/8 b - - >>> >>>Someone has said this is wrong. If it isn't wrong, it is still very hard >>>because white can get to a7 with his K before black gets to the corner. >> >>Your overlook that white have to take the black pawn before pushing his own pawn >>to the 8th rank ;) > >Nope. White has to take it in order to queen, but white doesn't have to take it >in order to get the king to a7. The resulting position is drawn, but the >computer doesn't know this. > >The way to do a wrong rook pawn heuristic with KBP v K is you look to see if the >black king is on a7/b7/a8/b8. If this is the case, black can't lose. You can add another possible condition by using the distance of the kings to the corner in king moves and the distance of the pawn to the corner in pawn moves. If it is black to move and If the number of moves that the black king needs to go to the corner is smaller than the number of moves that the white king or the white pawn need to go to the corner then it is a draw. Uri
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