Author: Jonas Cohonas
Date: 15:55:06 04/19/02
Go up one level in this thread
On April 19, 2002 at 14:07:13, John Merlino wrote: >This position came up in a game between myself and a friend: > >[D]6k1/5R2/7P/6K1/8/8/p5P1/6r1 w - - 0 1 > >The question is: can White draw (after 1.h7+ Kxf7 2.h8=Q a1=Q)? > >Chessmaster says this, but I suspect that the eval is simply because of the >difference in material (not the steadily dropping score): > >Time Depth Score Positions Moves >0:00 2/3 -2.25 978 1.Ra7 a1=Q 2.h7+ Kh8 3.Rxa1 Rxa1 >0:00 3/4 -2.25 2266 1.Ra7 a1=Q 2.h7+ Kh8 3.Rxa1 Rxa1 >0:00 4/5 -2.63 6103 1.Ra7 a1=Q 2.Rxa1 Rxa1 3.g4 Ra5+ > 4.Kg6 Ra6+ 5.Kg5 >0:00 4/5 -2.60 7857 1.Rg7+ Kh8 2.Ra7 a1=Q 3.Rxa1 Rxa1 > 4.g4 Kh7 >0:00 5/6 -2.60 16712 1.Rg7+ Kh8 2.Ra7 a1=Q 3.Rxa1 Rxa1 > 4.g4 Kh7 >0:00 6/7 -4.04 45865 1.Rg7+ Kh8 2.Ra7 a1=Q 3.Rxa1 Rxa1 > 4.Kg6 Rg1 5.Kf5 Rxg2 >0:01 7/8 -4.66 145818 1.Rg7+ Kh8 2.Ra7 a1=Q 3.Rxa1 Rxa1 > 4.g4 Kh7 5.Kf4 Ra4+ 6.Kf5 Ra5+ > 7.Kf6 Kxh6 >0:02 7/8 -4.01 229288 1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8 > 4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5 > 7.Qf5+ Kc4 8.g4 >0:04 8/9 -4.02 414062 1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8 > 4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5 > 7.Qf5+ Kd4 8.Qg4+ Kd5 9.Kh4 >0:09 9/10 -3.93 898261 1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8 > 4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5 > 7.Qf5+ Kd4 8.Qf6+ Kd3 9.Qg6+ Kc4 > 10.g4 >0:20 10/11 -3.76 2026714 1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8 > 4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5 > 7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kc8 > 10.Qf8+ Kb7 11.Qf7+ Kb6 >0:49 11/12 -3.63 4752637 1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8 > 4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5 > 7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kc8 > 10.Qe6+ Kb7 11.Qd7+ Ka6 12.Qd5 >1:39 12/13 -3.53 10149051 1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8 > 4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5 > 7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kc8 > 10.Qf8+ Kb7 11.Qe7+ Kb8 12.Qd8+ > Ka7 13.Qc7+ Ka6 >4:01 13/14 -3.42 25036829 1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8 > 4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5 > 7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kb6 > 10.Qe6+ Kb5 11.Qd5+ Kb4 12.Qe4+ > Kc3 13.Qe5+ Kc2 14.Qd5 >7:53 14/15 -3.35 50033731 1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8 > 4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5 > 7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kc8 > 10.Qf8+ Kb7 11.Qf7+ Kb6 12.Qg6+ > Kb5 13.Qd3+ Kc6 14.Qg6+ Kd5 15.Kf4 > >jm New game 6k1/5R2/7P/6K1/8/8/p5P1/6r1 w - - 0 1 Analysis by Shredder 6.02: 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 1/2 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 1/2 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 1/2 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 1/2 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 1/2 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 Rxa1 -+ (-2.63) Depth: 4/8 00:00:00 1.Ra7 a1Q 2.Rxa1 Rxa1 3.Kg6 -+ (-2.82) Depth: 5/10 00:00:00 1.Ra7 a1Q 2.Rxa1 Rxa1 3.g4 Kh8 -+ (-2.60) Depth: 6/12 00:00:00 1.Ra7 a1Q 2.Rxa1 Rxa1 3.Kf5 -+ (-2.86) Depth: 7/14 00:00:00 21kN, tb=190 1.Ra7 a1Q 2.Rxa1 Rxa1 3.g3 Ra3 4.Kf4 -+ (-2.81) Depth: 7/14 00:00:00 23kN, tb=231 1.Ra7 a1Q 2.Rxa1 Rxa1 3.g3 Ra5+ 4.Kg6 Ra6+ 5.Kg5 Kh7 -+ (-3.06) Depth: 8/16 00:00:00 36kN, tb=423 1.Ra7 a1Q 2.Rxa1 Rxa1 3.g3 Ra5+ 4.Kg6 Ra6+ 5.Kg5 Kh7 -+ (-3.07) Depth: 8/16 00:00:00 40kN, tb=553 1.Rg7+ Kh8 2.Ra7 Kg8 -+ (-3.06) Depth: 8/16 00:00:01 71kN, tb=659 1.Rg7+ Kh8 2.Ra7 a1B -+ (-2.71) Depth: 8/16 00:00:01 73kN, tb=673 1.Rg7+ Kh8 2.Ra7 a1Q 3.Rxa1 Rxa1 4.g3 Ra5+ 5.Kh4 Kg8 -+ (-2.71) Depth: 8/16 00:00:02 81kN, tb=846 1.Rg7+ Kh8 2.Ra7 a1Q 3.Rxa1 Rxa1 4.g3 Ra5+ 5.Kg6 Ra6+ 6.Kg5 -+ (-2.97) Depth: 9/18 00:00:02 93kN, tb=890 1.Rg7+ Kh8 2.Ra7 a1Q 3.Rxa1 Rxa1 4.g3 Ra5+ 5.Kg6 Ra6+ 6.Kg5 -+ (-2.98) Depth: 9/18 00:00:02 100kN, tb=1079 1.Rg7+ Kh8 2.Ra7 a1Q 3.Rf7 -+ (-3.23) Depth: 10/20 00:00:02 180kN, tb=1281 1.Rg7+ Kh8 2.Ra7 a1Q 3.Rf7 -+ (-3.73) Depth: 10/20 00:00:02 197kN, tb=1282 1.Rg7+ Kh8 2.Ra7 a1Q 3.Rxa1 Rxa1 4.g4 Kh7 5.Kh5 Rh1+ 6.Kg5 Rxh6 -+ (-4.77) Depth: 10/20 00:00:03 589kN, tb=1431 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Kc6 6.Qc2+ Kd6 -+ (-4.76) Depth: 10/20 00:00:03 786kN, tb=1692 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke7 6.Qe3+ Kd7 7.Qd3+ Ke7 8.Qe3+ Kd7 9.Qd3+ Ke7 10.Qe3+ -+ (-4.41) Depth: 10/20 00:00:03 857kN, tb=1701 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kd3 8.Qf3+ Kc4 9.Qf7+ Kb4 10.Qb7+ Kc3 11.Qf3+ Kc4 12.Qf7+ Kb4 13.Qb7+ Kc3 14.Qf3+ Kc4 15.Qf7+ -+ (-4.06) Depth: 10/20 00:00:04 1118kN, tb=1717 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kd3 8.Qf3+ Kc4 9.Qf7+ Kb4 10.Qb7+ Kc3 11.Qf3+ Kc4 12.Qf7+ Kb4 13.Qb7+ Kc3 14.Qf3+ Kc4 15.Qf7+ -+ (-4.06) Depth: 11/22 00:00:04 1366kN, tb=2012 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf6+ Kc5 8.Qe7+ Kd4 9.Qf6+ Kc5 10.Qe7+ Kd4 11.Qf6+ Kc5 -+ (-3.91) Depth: 12/24 00:00:05 2012kN, tb=2251 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf4+ Kc5 8.Qc7+ Kb5 9.Qb7+ Ka5 -+ (-3.85) Depth: 13/25 00:00:07 3005kN, tb=2836 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf4+ Kc5 8.Qc7+ Kb5 9.Qb7+ Ka5 10.Qa8+ Kb6 11.Qb8+ Ka5 12.Qa7+ Kb5 13.Qb7+ Ka5 14.Qa8+ Kb6 15.Qb8+ -+ (-3.85) Depth: 14/26 00:00:11 4911kN, tb=5229 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf4+ Kc5 8.Qc7+ Kb5 9.Qb7+ Ka5 10.Qa8+ Kb6 11.Qb8+ Kc5 12.Qf8+ Kb5 13.Qf5+ Kc4 14.Qe6+ Kd3 15.Qf5+ -+ (-3.85) Depth: 15/27 00:00:18 8816kN, tb=9424 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf4+ Kc5 8.Qc7+ Kb5 9.Qb7+ Kc4 10.Qc6+ Kd4 11.Qd6+ Kc4 12.Qc6+ Kd4 13.Qd6+ Kc4 14.Qc6+ Kd4 -+ (-3.76) Depth: 16/28 00:00:42 24259kN, tb=22140 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf4+ Kc5 8.Qc7+ Kb5 9.Qb7+ Kc4 10.Qc6+ Kd4 11.Qd6+ Kc4 12.Qc6+ Kd4 13.Qd6+ Kc4 14.Qc6+ Kd4 -+ (-3.61) Depth: 17/29 00:01:24 55495kN, tb=41223 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kc4 8.Qf7+ Kc5 9.Qe7+ Kd4 10.Qd6+ Kc4 11.Qc6+ Kd4 12.Qd6+ Kc4 13.Qc6+ Kd4 14.Qd6+ Kc4 -+ (-3.60) Depth: 18/30 00:02:20 97983kN, tb=77602 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kc4 8.Qf7+ Kc5 9.Qe7+ Kd4 10.Qd6+ Kc4 11.Qc6+ Kd4 12.Qd6+ Kc4 13.Qc6+ Kd4 14.Qd6+ Kc4 -+ (-3.60) Depth: 19/31 00:04:05 181394kN, tb=148225 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kc4 8.Qf7+ Kc5 9.Qe7+ Kd4 10.Qd6+ Kc4 11.Qc6+ Kd4 12.Qd6+ Kc4 13.Qc6+ Kd4 14.Qd6+ Kc4 -+ (-3.59) Depth: 20/32 00:07:52 354690kN, tb=284520 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kc4 8.Qf7+ Kc5 9.Qe7+ Kd4 10.Qd6+ Kc4 11.Qc6+ Kd4 12.Qd6+ Kc4 13.Qc6+ Kd4 14.Qd6+ Kc4 -+ (-3.56) Depth: 21/33 00:16:46 798102kN, tb=596826 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kc4 8.Qf7+ Kc5 9.Qe7+ Kd4 10.Qd6+ Kc4 11.Qc6+ Kd4 12.Qd6+ Kc4 13.Qc6+ Kd4 14.Qd6+ Kc4 -+ (-3.56) Depth: 22/34 00:30:12 1472877kN, tb=1189314 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kc4 8.Qf7+ Kc5 9.Qe7+ Kd4 10.Qd6+ Kc4 11.Qc6+ Kd4 12.Qd6+ Kc4 13.Qc6+ Kd4 14.Qd6+ Kc4 -+ (-3.31) Depth: 23/35 00:53:44 2690922kN, tb=2097632 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Ke5 6.Qf5+ Kd4 7.Qf2+ Kc4 8.Qf7+ Kc5 9.Qe7+ Kd4 10.Qd6+ Kc4 11.Qc6+ Kd4 12.Qd6+ Kc4 13.Qc6+ Kd4 14.Qd6+ Kc4 -+ (-2.81) Depth: 23/35 01:06:19 3440951kN, tb=2263151 1.h7+ Kxf7 2.h8Q a1Q 3.Qh5+ Ke7 4.Qh7+ Kd6 5.Qd3+ Kc7 6.Qc4+ Kd6 7.Qd3+ Kc7 8.Qc4+ Kd6 9.Qd3+ Kc7 = (0.03) Depth: 23/35 01:53:21 5922228kN, tb=3773533 (, Dual MP 1600+ 20.04.2002) Regards Jonas
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