Author: Kurt Utzinger
Date: 14:22:14 12/15/03
Go up one level in this thread
On December 15, 2003 at 16:23:15, Dieter Buerssner wrote: >[D] 5k2/1R4p1/5p2/4p2p/1p2P2P/r4P2/PK4P1/8 b - - > >This is from a game between Ruffian-Yace in the "CSS-Online-Masters" (time >control 60 15). > >I think, after Ra4, white cannot make progress, and the game will end in draw. >Yace played Re3? instead (with 0.0 score). Are there engines, that show in >reasonable time a big score difference between Re3 and Ra4?. I believe Re3 loses >by force. For example Re3 Rxb4 Re2 Kb3 Rxg2?! (possibly Re3 instead gives more >resistance) a4. > >It is not a real good test position, because engines can show for a long time >the same score for Ra4 and Re3, and the chosen move might be pure luck. >Therefore also the question for scores after those moves. > >Regards, >Dieter 5k2/1R4p1/5p2/4p2p/1p2P2P/r4P2/PK4P1/8 b - - 0 1 Analysis by Little Goliath 2000 v3.9: (P4 1.8/32 MB hash) 1...Ra4 2.Kb3 Ra3+ ± (1.17) Depth: 6/8 00:00:00 3kN 1...Ra4 2.Kb3 Ra3+ 3.Kxb4 ± (1.15) Depth: 6/9 00:00:00 3kN 1...Re3 ± (0.97) Depth: 6/9 00:00:00 5kN 1...Re3 2.Rxb4 Re2+ 3.Kb3 Rxg2 ² (0.70) Depth: 6/10 00:00:00 8kN 1...Re3 2.Rxb4 Re2+ 3.Kb3 Rxg2 ± (1.01) Depth: 7/10 00:00:00 8kN 1...Re3 2.Rxb4 Re2+ 3.Kb3 Rxg2 4.a3 ± (1.35) Depth: 7/10 00:00:00 11kN 1...Ra4 ± (1.15) Depth: 7/11 00:00:00 12kN 1...Ra4 2.g3 g6 3.Kb3 Ra3+ 4.Kxb4 Rxa2 ² (0.65) Depth: 7/11 00:00:00 20kN 1...Ra4 2.g3 g6 3.Kb3 Ra3+ 4.Kxb4 Rxa2 ± (0.99) Depth: 8/11 00:00:00 24kN 1...Ra4 2.g3 g6 3.Kb3 Ra3+ 4.Kxb4 Rxa2 5.Kc5 ± (0.99) Depth: 8/12 00:00:00 31kN 1...Ra4 2.g3 g6 3.Kb3 Ra3+ 4.Kxb4 Rxa2 5.Kc5 Rc2+ 6.Kd6 Ke8 ± (0.93) Depth: 9/19 00:00:00 51kN 1...Ra4 2.g3 g6 3.Kb3 Ra3+ 4.Kxb4 Rxa2 5.Kc5 Rc2+ 6.Kd6 Ke8 ² (0.63) Depth: 10/19 00:00:00 132kN 1...Ra4 2.g3 g6 ± (0.87) Depth: 10/21 00:00:00 134kN 1...Ra4 2.g3 g6 ² (0.57) Depth: 11/21 00:00:00 306kN 1...Ra4 2.g3 g6 3.f4 exf4 4.gxf4 g5 5.Kb3 Ra6 6.fxg5 fxg5 7.hxg5 Ra3+ 8.Kxb4 Rxa2 ² (0.57) Depth: 11/22 00:00:00 360kN 1...Ra4 2.g3 g6 3.f4 exf4 4.gxf4 g5 5.Kb3 Ra6 6.fxg5 fxg5 7.hxg5 Ra3+ 8.Kxb4 Rxa2 ² (0.57) Depth: 12/22 00:00:00 687kN 1...Ra4 2.Rb8+ Kf7 3.Rh8 Kg6 4.Rf8 Kh6 5.Rb8 g6 6.Rb7 g5 7.Kb3 ± (0.82) Depth: 13/24 00:00:01 1400kN 1...Ra4 2.Rb8+ Kf7 3.Rh8 Kg6 4.Rf8 Kh6 5.Rb8 g6 6.Rb7 g5 7.hxg5+ Kxg5 8.Rb6 f5 9.Kb3 ² (0.57) Depth: 14/27 00:00:02 2573kN 1...Ra4 2.Rc7 Ra3 3.Rc8+ Kf7 4.Rc4 Ra4 5.Rc7+ Kf8 ² (0.57) Depth: 15/31 00:00:09 10180kN 1...Ra4 2.Rc7 Ra3 3.Rc4 Ra4 4.Rc8+ Kf7 5.Rc7+ Kf8 ² (0.57) Depth: 16/31 00:00:16 18762kN 1...Ra4 2.Rc7 Ra3 3.Rc4 Ra4 4.Rc8+ Kf7 5.Rc7+ Kf8 ² (0.57) Depth: 17/37 00:00:29 35292kN 1...Ra4 2.Rc7 Ra3 3.Rc4 Ra4 4.Rc8+ Kf7 5.Rc7+ Kg8 ² (0.57) Depth: 18/37 00:01:03 77061kN 1...Ra4 2.Rc7 Ra3 3.Rc4 Ra4 4.Rc8+ Kf7 5.Rc7+ Kg8 6.Rd7 Kf8 7.Rb7 ² (0.57) Depth: 19/42 00:02:50 213474kN 1...Ra4 2.Rc7 Ra3 3.Rc4 Ra4 4.Rc8+ Kf7 5.Rc7+ Kg8 6.Rd7 Kh7 7.Rb7 Kg6 ² (0.57) Depth: 20/47 00:09:02 732351kN (Utzinger, MyTown 15.12.2003)
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