Author: Robert Hyatt
Date: 18:55:29 09/18/98
Go up one level in this thread
On September 18, 1998 at 17:44:44, Mark Young wrote: >On September 18, 1998 at 12:35:09, Bruce Moreland wrote: > >> >>On September 18, 1998 at 04:21:10, blass uri wrote: >> >>>No it does not find the right moves but I do not think that my 16 bit version is >>>the last version. >>>I told amir ban about a bug in the evaluation of king ,wrong bishop and more >>>than one pawn against a king(it does not know that 2 pawns are not better than >>>1) and I do not know if he fixed it. >>>I think also that Junior5 cannot find it because it does not understand the idea >>>when there are rooks but I am not sure about it. >>> >>>I am not sure if it is a draw even after gxh3 but the right move is 47.g3 and >>>Junior cannot find it >>>Junior could not find 46...h3 and prefered a3 >> >>I think that if it is not a draw after gxh3, there would have to be a study-like >>conclusion. >> >>If the pawns are stripped off it is a draw, since RB vs R is drawn in the >>typical case. If the rooks are traded, it is a draw because of the "impotent >>pair". If the B is sacrificed for the two pawns somehow it is a draw because >>the two pawns up R+P ending would be easily drawn. >> >>The only way it can be won is if white can advance an h-pawn, with or without >>winning the g-pawn (one h-pawn can be traded for it if necessary), without >>trading any pieces, and without allowing counterplay via the a-pawn. >> >>Seems like an extremely tall order to me. >> >>This is a typical Crafty endgame zap. It has been doing this for years. >> >>bruce > >I don't now how typical it is for crafty to do this at blitz time controls, but >typical or not it was a cool zap. And I don't know of any other program that >would play h3. I liked it. >(Crafty was running on a P II 233, Frizt 5 was running on a P II 400) it sounds like a tablebase + evaluation connection. Tablebases to know that KRB vs KR is a draw, and it has specific knowledge about K vs B with rp of the wrong color (or two or even 4 rook pawns on the same file)... sometimes it works...
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