Author: Robert Hyatt
Date: 13:27:31 10/22/98
Go up one level in this thread
On October 22, 1998 at 14:25:28, Mark Young wrote: >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 > >Rebel 8, Rebel 9, and Rebel 10 are the only programs I know of that can find the >key move in this position. Rebel 9, and Rebel 10 being the only ones that can >find Kg4 in well under 10 min. and stick with. > >Here is what Rebel 10 thinks of the position. > >Kg4 found at ply 16 score 2.77 >Kg4 Be7 Kf5 g4 Kxg4 Ke4 Be8 > >At ply 17, score now 3.20 same line of play. to be sure this isn't "cooked" can you post the analysis where it decides that the pawn capture leads to a draw? Or what was the eval for the capture vs Kg4 in the iteration where it changes???
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