Author: Johan Melin
Date: 00:40:41 11/27/01
Go up one level in this thread
On November 26, 2001 at 06:09:57, Uri Blass wrote: >On November 25, 2001 at 15:14:16, Victor Fernandez wrote: > >>On November 25, 2001 at 13:37:09, Mike S. wrote: >> >>>The number of types of positions and ideas chess programs don't handle well, is >>>shrinking rapidly IMO. Do you have examples? >> >>Hi Mike ! >> >>Yes, an example: an ending with few pieces . >> >>Kotov-Botvinnik >> >>8/8/4b1p1/2Bp3p/5P1P/1pK1Pk2/8/8 b - - 0 1 >> >>The correct move is ...g5 !!! Few programs play this. >> >>Regards, >> >> Victor > >search the right lines) > >only material yace version that I got from the programmer could prove that black >can win a bishop for a pawn. > >It did not use the KB KPP tablabases but it used the KB vs KP tablebases >so I guess that the evaluation is not because of KB vs KP endgame >It used the following values(bishop=3.50,pawn=0.80) > >New position >[D]8/8/4b1p1/2Bp3p/5P1P/1pK1Pk2/8/8 b - - 0 1 > >Analysis by Yace 0.99.56: > >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 1 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 2 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 3 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 4 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 5 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 6 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 7 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 8 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 9 00:00:00 >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 14 00:00:00 5kN >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 14 00:00:00 5kN >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 14 00:00:00 5kN >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 14 00:00:00 5kN >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 14 00:00:00 5kN >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 15 00:00:02 1571kN >1...g5 2.fxg5 d4+ 3.exd4 Kg3 4.g6 Kxh4 > -+ (-2.70) Depth: 16 00:00:06 4318kN > >(Blass, Tel-aviv 26.11.2001) > >Uri Did Yace do any position learning before this test? Solving it at depth 1 is a bit to good ... /Johan Melin
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