Author: Uri Blass
Date: 00:54:10 11/27/01
Go up one level in this thread
On November 27, 2001 at 03:40:41, Johan Melin wrote: >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 Yes It was also the only material version because I wanted to know if it is possible to prove that g5 wins material. I also posted analysis of the original yace with no learning in another post. Uri
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