Author: Robert Hyatt
Date: 10:16:10 10/22/98
Go up one level in this thread
On October 22, 1998 at 13:03:26, Bruce Moreland wrote: > a b c d e f g h > +---+---+---+---+---+---+---+---+ >8 | |///| |///| |///| |///| 8 > +---+---+---+---+---+---+---+---+ >7 |///| |///| |///| B |/p/| | 7 > +---+---+---+---+---+---+---+---+ >6 | |///| |///| P |///| |///| 6 > +---+---+---+---+---+---+---+---+ >5 |///| |///| |///| |/p/| P | 5 > +---+---+---+---+---+---+---+---+ >4 | |/b/| |/k/| |/P/| |///| 4 > +---+---+---+---+---+---+---+---+ >3 |///| |///| |///| K |///| | 3 > +---+---+---+---+---+---+---+---+ >2 | |///| |///| |///| |///| 2 > +---+---+---+---+---+---+---+---+ >1 |///| |///| |///| |///| | 1 > +---+---+---+---+---+---+---+---+ > a b c d e f g h > >8/5Bp1/4P3/6pP/1b1k1P2/5K2/8/8 w - - 0 1 > >The key is Kg4 > >Programs want to play fxg5, because this wins a pawn, prepares to get a passer, >etc. > >I haven't seen detailed analysis, but I assume that this draws, because black >gets back to h8 somehow, and then he can sacrifice his bishop for the e6 pawn >eventually, and white is left with the wrong rook pawn. > >Does anybody figure this position out? If so, how did you do it? Does it >require speculative knowledge that might lead to a sub-optimal result in other >cases? > >bruce looks hopeless to me, at present. It ends up with the pawn on h7, bishop holding it on g8 (also holding e6 pawn as well) with the black king on g7 or h8 and the black bishop staying on the diagonal to cover e7. If I remove the pawn on e7 I get instant draw scores as I recognize the wrong bishop + RP ending. But with the passer on e6 I don't. This one has to be solved by evaluation, as the repetition or 50-move rule will take a while to kick in since white thinks he is winning and will avoid repeating until it is no longer possible.
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