Author: Ricardo Gibert
Date: 20:52:53 09/21/03
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On September 21, 2003 at 22:56:42, Edward Seid wrote: >Since the rules of the pawn game are different from classical chess, it might be >useful to try a few test positions to make sure your engine properly assesses >the terminal node as a win or a draw. > >Here's one: > >[D]8/7p/4p3/8/4P2P/7P/8/8 w - - 0 1 > >1.e5 is a draw. > ...h5 is mutual stalemate, which is a draw. >not ...h6? 2.h5 and Black is stalemated but White isn't... a win for White. > >1.h5 is a win. > ...e5 2.h6 and Black is stalemated but White isn't. > not 2.h4? h5 and mutual stalemate, which is a draw. > ...h6 2.e5 and Black is stalemated but White isn't. > not 2.h4? e5 and mutual stalemate, which is a draw. > >Therefore, white moves 1.h5 and the position is scored as a win for White. This is irrelevant to the purpose of your post, but it is interesting to point out this position is illegal. Unlike regular chess, the number of pawns on a given file can only decrease and never increase. You have 3 pawns on the h-file and this is not possible.
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