Author: Kurt Utzinger
Date: 10:03:04 03/04/05
Go up one level in this thread
On March 04, 2005 at 08:11:07, Vasik Rajlich wrote: >On March 04, 2005 at 08:10:35, Vasik Rajlich wrote: > >>This endgame from the Kasparov-Leko game in Linares was very interesting. >> >>At move 20 or so it looks near-winning for white. >> >>After 24. Rxf5 Rf8 white could force a king ending: 25. g4 Nh6 26. Rxf6 Rxf6 27. >>Bxf6 Nxg4 28. Bg5 Kd7 29. Kg2 Ke6 30. Kg3 Nf6 31. Bxf6 Kxf6 32. Kh4. >> >>At first glance, it looks winning for white. Of course computers are clueless >>and evaluate as =, but annoyingly they are right! Black draws this endgame >>because the white king can never to to e8 or f8 - as soon as he does, black >>counterattacks with Ke6-f6-g5-f4. It's pretty certain that Kasparov saw this, >>and that's why he rejected 25. g4. >> >>So, let's fix this problem by moving white's pawn from c2 to d2. >> > >Let's try that diagram again: > >[D] 8/pp6/3p1k2/2p1p3/2P1P2K/8/PP1P4/8 b - - > >> >>Can any program understand that white wins here? Shredder 9 does not - at least >>not after 30 plies and 15 minutes. >> >>Vas CM10k Yado v2.5 on P4 1.8/64 MB hash (no chance to see a win) Time Depth Score Positions Moves 0:15 13/19 0.13 5613195 1...Kg6 2.Kg4 Kf6 3.Kf3 a6 4.b3 Ke7 5.Ke2 b6 6.a3 Ke6 7.Kd3 Ke7 8.Ke3 Kd7 9.a4 Kc6 10.Kd3 b5 0:31 14/20 0.10 11368199 1...Kg6 2.Kg4 Kf6 3.Kh5 Ke6 4.Kg6 a6 5.b3 Ke7 6.Kf5 Kf7 7.Kg4 Ke6 8.Kf3 b6 9.Ke3 b5 10.a4 bxc4 11.bxc4 a5 0:51 15/21 0.09 18355009 1...Kg6 2.Kg4 Kf6 3.Kh5 Ke6 4.Kg6 a6 5.b3 Ke7 6.Kf5 Kf7 7.a3 Ke7 8.Kg4 Ke6 9.Kf3 Ke7 10.Ke3 Ke6 11.a4 b6 1:25 16/22 0.08 29540341 1...Kg6 2.Kg4 Kf6 3.Kh5 Ke6 4.Kg6 a6 5.b3 Ke7 6.Kf5 Kf7 7.Kg5 Ke6 8.Kg4 b5 9.a4 b4 10.a5 Kf6 11.Kf3 Ke6 12.Ke3 2:38 17/23 0.00 51996259 1...Kg6 2.Kg4 Kf6 3.Kh5 a6 4.b3 Kg7 5.Kg5 Kf7 6.Kf5 Ke7 7.Kg5 Kf7 4:25 18/24 0.00 83529901 1...Kg6 2.Kg4 Kf6 3.Kh5 a6 4.b3 Kf7 5.Kg5 Kg7 6.Kf5 Kf7 7.a3 Ke7 8.Kg5 Kf7 9.Kf5 8:40 19/25 0.00 150988894 1...Kg6 2.Kg4 Kf6 3.Kh5 a6 4.b3 Kf7 5.Kg5 Ke6 6.Kg4 b5 7.a4 bxc4 8.bxc4 a5 9.Kf3 Kf6 10.Ke3 Ke6 11.Kd3 Kf6 12.Ke3 16:08 20/26 0.00 265201470 1...Kg6 2.Kg4 Kf6 3.Kh5 a6 4.b3 Kf7 5.Kg5 Ke6 6.Kg4 b5 7.a4 b4 8.a5 Kf6 9.Kf3 Ke7 10.Ke2 Kf6 11.Kd3 Ke6 12.Ke3 Kf6 13.Kf3 37:36 21/27 0.00 577580261 1...Kg6 2.Kg4 Kf6 3.Kh5 a6 4.b3 Kf7 5.Kg5 b6 6.Kf5 b5 7.a4 bxc4 8.bxc4 a5 9.Kg4 Kf6 10.Kf3 Ke7 11.Ke3 Kf6 12.Kf3
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