Author: Robin Smith
Date: 11:34:09 06/09/01
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On June 09, 2001 at 13:20:52, Otello Gnaramori wrote: >I have submitted the following position to various programs like Shredder, Fritz >6 and SOS. > >Black should be able to play and draw : > >[D]8/7p/4k1p1/2BpPp2/1Pb2P1P/8/5KP1/8 b > >White has two passed pawns and threatens q-side penetration on black squares. > >Fritz 6 and SOS 2000 think that the right answer is 1...Bd3 2.Ke3 Bf1 > >Shredder 5 goes for 1...Bb5 2.Ke3 Be8 > >The score for the programs at the end of the 2nd move is about -1.5 pawns so it >is not a clear draw. > >I'm not an expert chess player so I'm asking which program is right ? > >Thanks in advance. Programs often struggle with bishops of opposite color endings like this one. Black should set up a fortress (a hard concept for computers) to prevent white's king from invading the queen side. In this position I think giving up another pawn with 1....d4! 2.Bxd4 h5 and then 3....Kd5 & 4.... Bb5 and black has set up a nice fortress which white cannot break without giving back a pawn. A good indication when you have set up a successfull fortress is computer evaluations will stay flat as search depth increases. This game should be a draw. Robin
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