Author: Jeroen van Dorp
Date: 08:14:35 12/30/01
Go up one level in this thread
Where's the snag? White playing f6 and both checking both the black pawn on a3 and the advancing black pawns in the center? Or am I looking for troubles where there are none? :) I let them crunch 5 minutes each. On an antique PIII@840MHz J. [D]1r4k1/6b1/3p4/2P1pP2/b5Q1/p2qB3/5PPK/2R5 b - - 0 0 Shredder 6 1.00 0:00 +0.55-- 1...Qd4 2.Bxd4 exd4 (2) 0.0 1.00 0:00 -0.11-- 1...Qd4 2.Bxd4 exd4 (5) 0.0 1.00 0:00 -3.99 1...Qd4 2.Bxd4 exd4 3.cxd6 (11) 0.1 1.00 0:00 -3.12++ 1...Rb1 2.Rxb1 (12) 0.2 1.00 0:00 -2.25++ 1...Rb1 2.Rxb1 (14) 0.2 1.00 0:00 +0.16 1...Rb1 2.Rxb1 Qxb1 3.Qxa4 (24) 0.4 1.00 0:00 +0.66++ 1...e4 2.cxd6 (26) 0.4 1.00 0:00 +1.83++ 1...e4 2.cxd6 (28) 0.4 1.00 0:00 +5.55 1...e4 2.cxd6 Qxd6+ 3.Kg1 (39) 0.6 2.00 0:00 +5.13-- 1...e4 2.Ra1 dxc5 3.Bxc5 (109) 1.9 2.00 0:00 +4.32-- 1...e4 2.f6 dxc5 3.Qxg7+ (147) 2.5 2.00 0:00 +4.29 1...e4 2.c6 (186) 3.2 2.00 0:00 +4.42++ 1...Bd7 2.Rh1 (242) 4.1 2.00 0:00 +4.78++ 1...Bd7 2.cxd6 Qxd6 (286) 4.9 2.00 0:00 +4.78 1...Bd7 2.cxd6 Qxd6 (291) 5.0 2.00 0:00 +4.80++ 1...Bc6 2.Rb1 (336) 5.6 2.00 0:00 +4.83 1...Bc6 2.cxd6 Qxd6 (380) 6.4 3.00 0:00 +4.52-- 1...Bc6 2.cxd6 Qa6 (551) 9.1 3.00 0:00 +3.83-- 1...Bc6 2.Rd1 Qxd1 3.Qxd1 dxc5 (1.046) 16.6 3.00 0:00 +3.19 1...Bc6 2.Rd1 Qc3 3.cxd6 (1.269) 19.5 3.00 0:00 +3.25++ 1...Bc2 2.Bh6 Rb7 3.cxd6 (1.979) 28.2 3.00 0:00 +3.66++ 1...Bc2 2.cxd6 e4 (2.066) 29.0 3.00 0:00 +3.91 1...Bc2 2.Bh6 Rb7 3.cxd6 Qxd6 4.Rxc2 Qxh6+ 5.Kg1 (2.332) 15.2 3.00 0:00 +3.93++ 1...Bb5 2.Qb4 Qxf5 3.cxd6 (2.616) 16.8 3.00 0:00 +4.16 1...Bb5 2.Bh6 Rb7 3.cxd6 Qxd6 4.Bxg7 Rxg7 (2.861) 18.3 4.00 0:00 +3.87-- 1...Bb5 2.Bh6 Rb7 3.c6 (3.701) 22.7 4.00 0:00 +3.37-- 1...Bb5 2.f6 Qh7+ 3.Kg1 a2 4.cxd6 a1Q 5.Rxa1 Bxf6 (5.061) 29.5 4.00 0:00 -0.15 1...Bb5 2.f6 Qh7+ 3.Kg1 Rb7 4.Qe6+ Rf7 5.fxg7 (6.920) 24.8 4.00 0:00 -0.14++ 1...Bc6 2.cxd6 Qxd6 3.Qc4+ Bd5 4.Qc8+ Rxc8 (7.683) 27.2 4.00 0:00 +0.21++ 1...Bc6 2.f6 Qh7+ 3.Kg1 Bxg2 4.Qxg7+ Qxg7 5.fxg7 (8.149) 28.6 4.00 0:00 +0.91 1...Bc6 2.f6 Qh7+ 3.Kg3 Bxg2 4.Qxg7+ Qxg7+ 5.fxg7 (10.804) 27.2 4.00 0:00 +0.92++ 1...Be8 2.cxd6 Qxd6 3.Qxg7+ Kxg7 4.Rc7+ Qxc7 (15.558) 35.4 4.00 0:00 +0.92 1...Be8 2.f6 Qh7+ 3.Kg1 Ra8 4.fxg7 dxc5 5.Bxc5 Qxg7 (16.435) 37.0 5.00 0:00 +1.17++ 1...Be8 2.f6 Qh7+ 3.Kg3 a2 4.Qxg7+ Qxg7+ 5.Kh3 a1N 6.fxg7 (35.927) 58.3 5.00 0:00 +1.48 1...Be8 2.f6 Qh7+ 3.Kg1 Rb1 4.Qc8 Rxc1+ 5.Bxc1 a2 6.Qxe8+ Bf8 (44.443) 65.5 6.00 0:01 +1.23-- 1...Be8 2.f6 Qh7+ 3.Kg3 a2 4.Rh1 e4 5.Qxg7+ Qxg7+ 6.fxg7 Kxg7 (105.908) 95.6 6.00 0:01 +0.73-- 1...Be8 2.Bh6 Rb7 3.f6 Qh7 4.Qe6+ Kf8 5.Qxd6+ Re7 6.fxe7+ Kg8 (129.822) 101.9 6.00 0:01 +0.55 1...Be8 2.Bh6 Rb7 3.f6 Rc7 4.cxd6 Qxd6 5.Rxc7 Qxc7 6.Qxg7+ Qxg7 7.fxg7 (182.173) 110.0 6.00 0:02 +0.56++ 1...Bb3 2.f6 Qh7+ 3.Kg1 dxc5 4.fxg7 Ra8 5.Bxc5 Ra4 6.Qc8+ Kxg7 (245.241) 115.2 6.00 0:02 +0.56 1...Bb3 2.f6 Qh7+ 3.Kg3 Ra8 4.cxd6 a2 5.Rh1 (288.823) 118.6 7.01 0:03 +0.31-- 1...Bb3 2.f6 Qh7+ 3.Kg3 Ra8 4.cxd6 Kh8 5.Qxg7+ Qxg7+ 6.fxg7+ Kxg7 (385.424) 125.1 7.01 0:03 -0.06 1...Bb3 2.f6 Qh7+ 3.Kg3 Kf7 4.Qxg7+ Qxg7+ 5.fxg7 dxc5 6.Bxc5 Ra8 7.Ra1 (484.165) 130.6 7.02 0:03 -0.05++ 1...Be8 2.Bh6 Rb7 3.f6 Rc7 4.cxd6 Qxd6 5.Rxc7 Qxc7 6.Qh5 Bxf6 7.Qxe8+ Kh7 (503.926) 130.4 7.02 0:04 +0.30++ 1...Be8 2.Bh6 Rb7 3.f6 Qd4 4.Qe6+ Bf7 5.Qc8+ Kh7 6.Ra1 Qxa1 7.Qh8+ Kxh8 (552.327) 132.0 7.02 0:04 +0.62 1...Be8 2.Bh6 Rb7 3.f6 Qd4 4.Qxd4 exd4 5.c6 Bxc6 6.fxg7 Be4 (624.557) 134.6 8.01 0:06 +0.37-- 1...Be8 2.Bh6 Rb7 3.f6 Qd4 4.Qxd4 exd4 5.c6 Bxc6 6.fxg7 Be4 7.Rh1 (898.232) 136.8 8.01 0:07 +0.32 1...Be8 2.Bh6 Rb7 3.f6 Qd4 4.Qe6+ Kh7 5.fxg7 Bf7 6.Qf6 dxc5 7.Qa6 (1.039.270) 139.2 9.01 0:21 +0.35 1...Be8 2.Bh6 Rb7 3.f6 Qg6 4.Qe6+ Qf7 5.Qxf7+ Kxf7 6.fxg7 Rb4 7.Bd2 Ra4 8.Bc3 dxc5 9.Bxe5 (3.085.787) 144.3 10.01 0:33 +0.10-- 1...Be8 2.Bh6 Rb7 3.f6 Qg6 4.Qxg6 Bxg6 5.fxg7 dxc5 6.Rxc5 Rxg7 7.Bxg7 Kxg7 8.Rxe5 (4.585.986) 137.4 10.01 0:48 +0.07 1...Be8 2.Bh6 Rb7 3.f6 Rc7 4.cxd6 Qxd6 5.Bxg7 e4+ 6.g3 Bh5 7.Qg5 Rxc1 8.Qxc1 (6.718.297) 139.3 11.01 1:52 0.00 1...Be8 2.Bh6 Rb7 3.f6 Rc7 4.cxd6 Qxd6 5.Bxg7 e4+ 6.g3 Qd7 7.Qg5 Rxc1 8.Bh6+ Kf7 9.Qxc1 (15.637.380) 138.3 12.01 5:05 -0.04 1...Be8 2.Bh6 Rb7 3.f6 Rc7 4.fxg7 a2 5.Rd1 Qb3 6.cxd6 Rd7 7.Qf5 Rf7 (44.902.326) 146.7 best move: Ba4-e8 time: 5:07.722 min n/s: 146.797 nodes: 45.172.110 Analysis by Fritz 7: 1...Be8 2.f6 Qg6 3.Qxg6 Bxg6 4.fxg7 dxc5 5.Bxc5 µ (-1.04) Depth: 6/21 00:00:00 94kN 1...Be8-- µ (-0.75) Depth: 7/23 00:00:00 109kN 1...Be8 2.f6 Qh7+ 3.Kg3 dxc5 4.Bxc5 Rb3+ 5.f3 Qh6 ³ (-0.63) Depth: 7/23 00:00:00 171kN 1...Be8 2.f6 Qh7+ 3.Kg3 dxc5 4.Bxc5 Rb3+ 5.f3 Qg6 6.fxg7 Qxg4+ 7.Kxg4 Bd7+ 8.Kg5 µ (-0.79) Depth: 8/24 00:00:02 412kN 1...Be8-- ³ (-0.50) Depth: 9/26 00:00:04 999kN 1...Be8 2.c6 Rc8 3.c7 Qb5 4.f6 Qd7 5.Qxg7+ Qxg7 ³ (-0.35) Depth: 9/26 00:00:04 1055kN 1...Be8 2.c6 Rc8 3.c7 Qb5 4.f6 Qd7 5.Qxg7+ Qxg7 6.fxg7 Kxg7 ³ (-0.35) Depth: 10/28 00:00:12 2995kN 1...Be8 2.c6 Rc8 3.f6 Rc7 4.fxg7 Qg6 5.Qh3 Kxg7 6.Ra1 Bxc6 7.Rxa3 ³ (-0.32) Depth: 11/28 00:00:31 6318kN 1...Be8 2.c6 Rc8 3.f6 Rc7 4.fxg7 Qg6 5.Qxg6 Bxg6 6.Bb6 Rc8 7.Kg3 Kxg7 = (-0.19) Depth: 12/31 00:01:04 17421kN 1...Be8 2.c6 Rc8 3.f6 Rc7 4.fxg7 Qg6 5.Qc4+ Qf7 6.Qe4 Bxc6 7.Rxc6 = (0.00) Depth: 13/34 00:02:47 47733kN Junior 7 had a staggering *one* tablebase hit in it's analysis. I can't remember seeing that on my PC with still 16 pieces on the board. Analysis by Junior 7: 1...Bd1 2.Rxd1 Qc2 3.cxd6 +- (1.87) Depth: 3 00:00:00 1...Bc2 2.cxd6 Qxf5 µ (-0.84) Depth: 3 00:00:00 1...Bb3 2.cxd6 Qxd6 µ (-1.02) Depth: 3 00:00:00 1...Bd7 2.cxd6 Bxf5 3.Qh5 a2 -+ (-1.77) Depth: 3 00:00:00 1...Bd7 2.Bh6 Qh3+ 3.gxh3 Kf7 4.Qxg7+ Ke8 5.Qf8# +- (#5) Depth: 6 00:00:00 8kN 1...Bc6 2.Bh6 Rb7 3.f6 a2 4.Qe6+ Kh7 5.fxg7 Rxg7 ± (1.08) Depth: 6 00:00:00 21kN 1...Bb3 2.Bh6 Rb7 3.f6 dxc5 4.Qc8+ Kh7 5.fxg7 Rxg7 6.Bxg7 ± (0.96) Depth: 6 00:00:00 28kN 1...dxc5 2.Qxa4 Qxf5 3.Qxa3 Qh7+ 4.Kg1 Qh4 5.Bxc5 = (0.07) Depth: 6 00:00:00 88kN 1...dxc5 2.Qxa4 Qxf5 3.Bxc5 Bh6 4.Rc3 Qf4+ 5.Rg3+ Kh8 6.Qxa3 Qh4+ 7.Rh3 Bf4+ 8.Kg1 ² (0.41) Depth: 9 00:00:01 738kN 1...dxc5 2.Qxa4 c4 3.Rxc4 Qxf5 4.Rh4 Qf8 5.Qc4+ Qf7 6.Qxf7+ Kxf7 7.Rh7 a2 ² (0.45) Depth: 12 00:00:16 9015kN 1...dxc5 2.Qxa4 Qxf5 3.Qxa3 Qh5+ 4.Kg1 e4 5.Qa6 Be5 6.Qe6+ Kh8 7.Qh6+ Qxh6 8.Bxh6 Kh7 ² (0.44) Depth: 14 00:01:10 42900kN 1...dxc5 2.Qxa4 Qxf5 3.Qxa3 Qh5+ 4.Kg1 e4 5.Qxc5 Qxc5 6.Rxc5 Kf7 7.Rc4 Rb1+ 8.Kh2 Be5+ ² (0.46) Depth: 15 00:03:31 115733kN, tb=1 1...Be8 2.c6 Rc8 3.Rd1 Qxd1 4.Qxd1 a2 5.Bg5 Rxc6 6.Qa4 Bf7 7.Qa8+ Bf8 8.Bh6 a1Q 9.Qxf8+ Kh7 10.Qxf7+ ² (0.35) Depth: 15 00:04:41 157923kN, tb=1
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