Author: Uri Blass
Date: 03:56:13 01/18/04
Go up one level in this thread
On January 18, 2004 at 06:26:03, Peter Berger wrote: >On January 17, 2004 at 17:52:56, Uri Blass wrote: > >>1.Rg3+ Kh6 2.Rg1 Bd7 3.Re1 Bf5 4.Rf1 Kg6 5.Rg1+ Kf7 6.Kh5 Be6 >> +- (1.56) Depth: 32/51 01:01:57 1839652kN >>1.Rg3+ Kh6 2.Rg1 Bd7 >> +- (1.56) Depth: 32/51 01:41:06 2909299kN >>1.Rd1 Be6 2.Rg1+ Kh6 3.Re1 Bd7 4.Rd1 Bc8 5.Rf1 Kg6 6.Rg1+ Kh6 7.Kg3 Be6 8.Kf4 >>Bd7 >> +- (1.57) Depth: 32/51 01:55:52 3277019kN >> > >This is what I get with Yace with a full set of tablebases: > >1.Td1 Le6 2.Te1 Ld7 3.Tg1+ Kh6 4.Kg3 Kg7 5.Kf4+ Kf7 6.Te1 Kg6 7.Te3 Kf7 8.Kg3 >Lc8 9.Kh4 Kg6 > ± (1.28) Tiefe: 31/50 01:15:18 1203546kN >1.Td1 Le6 2.Te1 Ld7 3.Tg1+ Kh6 4.Kg3 Kg7 5.Kf4+ Kf7 6.Ke4 Le6 7.Kd4 > ± (1.29) Tiefe: 32/51 01:39:17 1469856kN >1.Td1 Le6 2.Te1 Ld7 3.Tg1+ Kh6 4.Kg3 Kg7 5.Kf4+ Kf7 6.Ke4 Le6 7.Kd4 > ± (1.29) Tiefe: 32/51 01:48:42 1545246kN > >So I don't think it has really found anything interesting. > >I had a look at some somehow similar positions in Dwojetzki's endgame university >book, and I would be very surprised if your position were won. My tablebases are not full but the question is what cause yace to show +1.xx score. If I continue some moves forward in your line I do not see +1.xx score and I guess that yace should know to evaluate simple drawn KR vs KB or KP vs K as less than +1.xx Is there a bug in yace or another explanation(white wins the pawn but the main line is wrong?). Uri
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