Author: Uri Blass
Date: 04:41:13 02/04/02
This position is from the ssdf games(RebelCentury4-Shredder5.32). [D]8/8/8/3qr2p/4k2P/3p2PK/R7/Q7 w - - 0 79 The last move of Shredder was Ke3-e4 How much time does your program need to see that white wins material after ke3-e4? Is ke3-e4 the losing blunder in the game? The game continued 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Qb5 and Shredder had to resign at move 121 Here is yace's analysis when I go back from move 82 of black. Yace believe that 82...Rc5 was better but 82...Rc5 is also losing material based on yace's analysis: Rebel Century 4 A1200 - Shredder 5.32 A1200 8/3q4/8/5r1p/3k3P/3p2P1/R6K/4Q3 b - - 0 1 Analysis by Yace 0.99.56: 82...d2 83.Rxd2+ Kc5 84.Rxd7 +- (11.19) Depth: 1 00:00:00 82...Rf6 ³ (-0.45) Depth: 1 00:00:00 82...Re5 ³ (-0.46) Depth: 1 00:00:00 82...Rd5 ³ (-0.48) Depth: 1 00:00:00 82...Rf3 ³ (-0.50) Depth: 1 00:00:00 82...Qf7 ³ (-0.55) Depth: 1 00:00:00 82...Qf7 83.Rd2 ³ (-0.36) Depth: 2 00:00:00 82...Qf7 83.Ra4+ Qc4 84.Rxc4+ Kxc4 = (0.04) Depth: 3 00:00:00 82...Qf7 83.Ra4+ Kc5 84.Qa5+ Kd6 85.Qa6+ Ke7 86.Qxd3 ± (0.80) Depth: 3 00:00:00 82...Rd5 83.Rd2 ± (0.79) Depth: 3 00:00:00 82...Rd5 83.Qb4+ Ke5 84.Qf4+ Ke6 85.Rf2 = (-0.05) Depth: 3 00:00:00 82...Qb5 83.Re2 = (-0.19) Depth: 3 00:00:00 82...Qb5 83.Qa1+ Kd5 84.Ra5 ³ (-0.35) Depth: 3 00:00:00 82...Qb5 83.Qd2 Qb3 84.Ra7 ³ (-0.34) Depth: 4 00:00:00 82...Qb5 83.Qa1+ Ke3 84.Qe1+ Kd4 = (0.00) Depth: 5 00:00:00 53kN 82...Rc5 83.Qf2+ Kd5 84.Rc2 dxc2 85.Qxc2 = (-0.01) Depth: 5 00:00:00 53kN 82...Rc5 83.Qf2+ Kd5 84.Qf3+ Kc4 85.Rb2 Qg4 86.Qxg4+ hxg4 = (-0.15) Depth: 5 00:00:00 53kN 82...Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Qf3+ Kd4 88.Qf4+ Kd5 89.Qf3+ = (0.00) Depth: 6 00:00:00 265kN 82...Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Qf3+ = (0.00) Depth: 7 00:00:02 765kN 82...Rc5 83.Qb4+ Kd5 84.Ra4 Rc2+ 85.Kg1 Rc1+ 86.Kg2 Rc2+ 87.Kg1 = (0.00) Depth: 8 00:00:13 5170kN 82...Rc5 83.Qg1+ Kd5 84.Qe3 Qb5 85.Rd2 Rc3 86.Qe8 Qxe8 87.Kh3 = (0.01) Depth: 10 00:01:56 44798kN 82...Rc5 83.Qa1+ Kd5 84.Ra4 Ke6 85.Rf4 Rc2+ 86.Kg1 Kd6 87.Rf3 d2 88.Qa6+ Kc7 89.Qa7+ Kc8 90.Rf8+ Qd8 91.Rxd8+ Kxd8 ² (0.41) Depth: 11 00:06:22 145536kN 82...Rc5 83.Qd2 Qf5 84.Ra4+ Kd5 85.Rf4 Qh7 86.Qa2+ Ke5 87.Qb2+ Kd6 ² (0.42) Depth: 11 00:07:52 173198kN 82...Rc5 83.Qd2 Qf5 84.Ra4+ Kd5 85.Rf4 Qg6 86.Qa2+ Kd6 87.Qa6+ Rc6 88.Rd4+ Ke5 89.Qxd3 Rc2+ 90.Kh3 Qe6+ 91.g4 hxg4+ 92.Kg3 Rb2 93.Rxg4 ± (0.74) Depth: 12 00:18:11 389498kN 82...Qb5 83.Ra8 Re5 84.Rd8+ Rd5 85.Qf2+ Kc4 86.Qf4+ Kc3 87.Rc8+ Rc5 88.Qe5+ Kc4 89.Qxh5 Rxc8 90.Qg4+ Kb3 91.Qxc8 d2 92.Kh1 ± (0.73) Depth: 12 00:22:33 479412kN 82...Qb5 83.Ra8 Re5 84.Rd8+ Kc4 ± (0.73) Depth: 12 00:23:03 489731kN 82...Qb5 83.Ra8 Re5 84.Rd8+ Kc4 85.Qc1+ Kb3 86.Qb1+ Kc3 87.Rxd3+ Qxd3 88.Qa1+ Kc2 89.Qxe5 Qf3 90.Qf4 Qe2+ 91.Kh3 Kd1 92.Qd4+ Ke1 ± (0.95) Depth: 13 00:47:19 1023274kN 82...Rc5 83.Qd2 Qd5 84.Ra3 Qf3 85.Qb4+ Kd5 86.Rxd3+ Qxd3 87.Kh3 ± (0.94) Depth: 13 01:20:06 1714733kN 82...Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 ± (0.86) Depth: 13 02:02:55 2591850kN I gave yace to go back and here is the analysis (Blass, Tel-aviv 04.02.2002) Rebel Century 4 A1200 - Shredder 5.32 A1200 8/3q4/8/4r2p/4k2P/3p2P1/5R1K/Q7 b - - 0 1 Analysis by Yace 0.99.56: 80...d2 ³ (-0.42) Depth: 1 00:00:00 80...Qg4 ³ (-0.48) Depth: 1 00:00:00 80...Qg4 81.Rf4+ Ke3 82.Rxg4 hxg4 +- (2.58) Depth: 2 00:00:00 80...Qg4 81.Rf4+ Qxf4 +- (3.34) Depth: 2 00:00:00 80...d2 81.Re2+ Kf3 82.Rxd2 +- (2.09) Depth: 2 00:00:00 80...d2 81.Qd1 = (-0.18) Depth: 2 00:00:00 80...Qe7 81.Qc3 = (-0.24) Depth: 2 00:00:00 80...Qe6 81.Qc3 ³ (-0.30) Depth: 2 00:00:00 80...Qe6 81.Rf4+ Kd5 82.Qa5+ Kd6 83.Qa6+ Kd7 84.Qxd3+ ± (0.81) Depth: 3 00:00:00 80...Qe6 81.Rf4+ Kd5 82.Rd4+ Kc5 83.Qc3+ Kb5 ± (1.15) Depth: 3 00:00:00 80...Qe7 81.Qc3 ± (1.14) Depth: 3 00:00:00 80...Qe7 81.Rf4+ Kd5 82.Rd4+ Ke6 83.Qa6+ Kf5 ± (1.11) Depth: 3 00:00:00 80...Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 Rc2+ 90.Kf3 Kc6 ± (0.86) Depth: 3 00:00:00 80...Qb5 81.Qe1+ Kd5 82.Qh1+ Ke6 83.Qc6+ Qxc6 84.Rf4 ± (0.85) Depth: 3 00:00:00 80...Qb5 81.Qh1+ Kd4 82.Rf4+ Kc5 83.Qf3 = (-0.08) Depth: 3 00:00:00 80...Qb5 81.Rf4+ Kd5 82.Qa8+ Kd6 83.Qd8+ Kc6 84.Rd4 = (-0.03) Depth: 4 00:00:00 80...Qb5 81.Rf4+ Kd5 82.Qa8+ Ke6 83.Qc8+ Kd5 84.Qg8+ Kd6 85.Qd8+ Kc6 86.Qc8+ Kd6 87.Rd4+ Qd5 88.Rxd5+ Rxd5 = (0.00) Depth: 5 00:00:00 68kN 80...Qb5 81.Rf4+ Kd5 82.Qa8+ Ke6 83.Qc8+ Kd5 84.Qg8+ Kd6 85.Qd8+ Kc6 86.Qc8+ Kd6 87.Rd4+ Rd5 88.Qf8+ Kd7 89.Qf7+ Kd6 90.Qf8+ Kd7 91.Qf7+ Kd6 92.Qf8+ = (0.00) Depth: 6 00:00:00 165kN 80...Qb5 81.Rf4+ Kd5 82.Qa8+ Ke6 83.Qc8+ Kd5 84.Qg8+ Kd6 85.Qd8+ Kc6 86.Qc8+ Kd5 87.Qg8+ Kd6 = (0.00) Depth: 7 00:00:01 411kN 80...Qb5 81.Rf4+ Kd5 82.Qd4+ Kc6 83.Rf6+ Kb7 84.Qd6 Re2+ 85.Kh3 d2 86.Rf7+ Kc8 87.Rf8+ Re8 88.Rxe8+ Kb7 ² (0.40) Depth: 8 00:00:03 1244kN 80...Qb5 81.Rf4+ Kd5 82.Qd4+ Ke6 83.Rf3 Qd5 84.Qxd3 Qxd3 85.Rxd3 Kf5 ± (0.82) Depth: 8 00:00:05 2095kN 80...Qb5 81.Rf4+ Kd5 82.Qd4+ Ke6 83.Qd8 Re2+ 84.Kh3 Qe5 85.Qe8+ Kd6 86.Rf5 Qxf5+ 87.g4 ± (0.86) Depth: 9 00:00:15 6213kN 80...Qb5 81.Rf4+ Kd5 82.Qd4+ Ke6 83.Qd8 Re2+ 84.Kh3 Qe5 85.Qxd3 Re3 86.Qg6+ Kd5 87.Qf7+ Kc6 88.Rf6+ Kb5 89.Rf4 ± (0.91) Depth: 10 00:00:49 19907kN 80...Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 Rc2+ 90.Kf3 Kc6 ± (0.86) Depth: 10 00:00:49 19907kN 80...Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 Rc2+ 90.Kf3 Kc6 ± (0.86) Depth: 11 00:01:02 25135kN (Blass, Tel-aviv 04.02.2002) Rebel Century 4 A1200 - Shredder 5.32 A1200 8/8/8/3qr2p/4k2P/3p2PK/5R2/Q7 b - - 0 1 Analysis by Yace 0.99.56: 79...d2 ³ (-0.54) Depth: 1 00:00:00 79...d2 80.Qd1 ³ (-0.30) Depth: 2 00:00:00 79...Rf5 80.Qa4+ Ke3 ³ (-0.31) Depth: 2 00:00:00 79...Rf5 80.Qa4+ Ke5 ³ (-0.35) Depth: 2 00:00:00 79...Qe6+ 80.Rf5 ³ (-0.40) Depth: 2 00:00:00 79...Qe6+ 80.Kh2 Kd5 ³ (-0.66) Depth: 2 00:00:00 79...Qe6+ 80.Kh2 Kd5 81.Qc3 ³ (-0.48) Depth: 3 00:00:00 79...Qe6+ 80.Kh2 Kd5 81.Qa5+ Kc4 82.Rf4+ Kb3 83.Qd2 = (-0.15) Depth: 4 00:00:00 79...Rf5 80.Rxf5 Qxf5+ 81.g4 hxg4+ 82.Kh2 = (-0.16) Depth: 4 00:00:00 79...Rf5 80.Qe1+ Kd4 81.Qa1+ Kc4 82.Qc1+ Kb5 83.Rb2+ Ka5 = (-0.18) Depth: 4 00:00:00 79...Rf5 80.Qe1+ Kd4 81.Qb4+ Ke5 82.Qb8+ Kf6 83.Qf8+ Kg6 84.Qe8+ Kh7 85.Rd2 = (-0.20) Depth: 5 00:00:00 86kN 79...Rf5 80.Qe1+ Kd4 81.Qb4+ Ke5 82.Qe7+ Qe6 83.Qc5+ Kf6 84.Qc3+ Ke7 85.Qc7+ Ke8 86.Rd2 ³ (-0.32) Depth: 6 00:00:00 241kN 79...Rf5 80.Qe1+ Kd4 81.Rb2 Qf3 82.Qb4+ Kd5 83.Qb7+ Kd4 84.Qb4+ = (0.00) Depth: 7 00:00:02 829kN 79...Rf5 80.Qe1+ Kd4 81.Rb2 Qf3 82.Qb4+ Kd5 83.Qb7+ Kd4 84.Qb6+ Rc5 85.Rb4+ Kd5 86.Qd8+ Ke6 87.Rb6+ Rc6 88.Qe8+ Kf5 89.Qxc6 Ke5 ² (0.40) Depth: 11 00:01:23 32545kN 79...Rf5 80.Qe1+ Kd4 81.Rb2 Qf3 82.Qb4+ Kd5 83.Qb7+ Kd4 84.Qb6+ Kd5 85.Rb5+ Ke4 86.Qe6+ Kd4 87.Rb4+ Kc3 88.Rf4 Rxf4 ² (0.40) Depth: 11 00:02:19 54531kN 79...Rf5 80.Qe1+ Kd4 81.Rb2 Qf3 82.Qb4+ Kd5 83.Qb7+ Kd4 84.Rb4+ Kc3 85.Rb3+ Kc4 86.Qb4+ Kd5 87.Qa5+ Kd4 88.Qc3+ Ke4 89.Rb4+ Ke3 90.Qc1+ d2 91.Rb3+ Ke2 92.Qc4+ Ke1 93.Rxf3 Rxf3 ± (0.80) Depth: 12 00:06:21 149740kN 79...Rf5 80.Qe1+ Kd4 81.Rb2 Qf3 82.Qb4+ Kd5 83.Qb5+ Kd4 84.Rb4+ Ke3 85.Qb6+ Ke2 86.Rb2+ d2 87.Qe6+ Kf1 88.Rxd2 Rc5 89.Qa6+ ± (0.94) Depth: 12 00:10:13 236574kN 79...Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 12 00:14:32 332311kN (Blass, Tel-aviv 04.02.2002) Rebel Century 4 A1200 - Shredder 5.32 A1200 8/8/8/3qr2p/4k2P/3p2PK/R7/Q7 w - - 0 1 Analysis by Yace 0.99.56: 79.Qxe5+ Qxe5 -+ (-5.70) Depth: 1 00:00:00 79.Qb2 ³ (-0.59) Depth: 1 00:00:00 79.Qb2 ³ (-0.59) Depth: 1 00:00:00 79.Rd2 ³ (-0.48) Depth: 1 00:00:00 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 1 00:00:00 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 2 00:00:00 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 3 00:00:00 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 4 00:00:00 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 5 00:00:00 14kN 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 6 00:00:00 39kN 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 7 00:00:00 147kN 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 8 00:00:02 791kN 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Rc5 83.Qf2+ Kd5 84.Ra3 Qb5 85.Qf3+ Kd4 86.Qf4+ Kd5 87.Kh3 Qd7+ 88.Kg2 Qh7 89.Ra4 ± (0.86) Depth: 9 00:00:11 4317kN (Blass, Tel-aviv 04.02.2002) Uri
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