Author: Ernst Walet
Date: 09:01:30 11/01/03
Go up one level in this thread
On November 01, 2003 at 11:18:56, Cliff Sears wrote: >[d] r3k2r/ppp1bp1p/6q1/4R3/3P2b1/6Pp/PP3P2/RNB1Q1K1 b kq - > >Black to move > >Position from Chess Life (to Evan's Column) pg 9 november 2003 > >Why do some engines suggest Kd8?? Am I missing something? Smarthink out of the >ones >I tested is the only one to see Evan's suggested O-O-O > >Delfi, Gandalf, and Lambchop suggested Kd8. A couple of other >engines suggested O-O Some results from over here: New game r3k2r/ppp1bp1p/6q1/4R3/3P2b1/6Pp/PP3P2/RNB1Q1K1 b kq - 0 1 Analysis by Fritz 8: 1...Qd6 2.Qe4 Bc8 3.Nc3 c6 4.Bg5 f6 µ (-0.81) Depth: 7/22 00:00:00 112kN 1...h2+! µ (-0.84) Depth: 7/22 00:00:00 145kN 1...h2+ 2.Kg2 h1Q+ 3.Qxh1 Rd8 4.Kg1 Rxd4 5.Rxe7+ Kxe7 µ (-0.97) Depth: 7/22 00:00:00 184kN 1...h2+-- ³ (-0.68) Depth: 8/23 00:00:00 399kN 1...h2+ 2.Kxh2 0-0-0 ³ (-0.68) Depth: 8/24 00:00:00 423kN 1...Kd8! µ (-0.72) Depth: 8/24 00:00:00 694kN 1...Kd8! µ (-0.87) Depth: 8/25 00:00:00 845kN 1...Kd8 2.Bf4 Bf6 3.Nc3 c6 4.d5 Bxe5 5.Qxe5 µ (-0.90) Depth: 8/25 00:00:01 933kN 1...Kd8 2.Bf4 Bf6 3.Nc3 c6 4.d5 Rg8 5.Re4 Kc8 6.Re8+ ³ (-0.65) Depth: 9/30 00:00:01 1591kN 1...h2+! ³ (-0.68) Depth: 9/30 00:00:01 1669kN 1...h2+! µ (-0.84) Depth: 9/30 00:00:02 1724kN 1...h2+! µ (-1.15) Depth: 9/31 00:00:02 1962kN 1...h2+ 2.Kxh2 0-0-0 3.f3 Be6 4.d5 Bxd5 5.Rxd5 Rxd5 6.Qxe7 Qc2+ 7.Nd2 Rxd2+ 8.Bxd2 Qxd2+ 9.Kh3 Qxb2 10.Rd1 Qxa2 µ (-1.40) Depth: 9/31 00:00:02 2203kN 1...0-0-0! -+ (-1.43) Depth: 9/31 00:00:03 2692kN 1...0-0-0! -+ (-1.59) Depth: 9/31 00:00:03 2838kN 1...0-0-0! -+ (-1.90) Depth: 9/31 00:00:03 3497kN 1...0-0-0 2.Nc3 Bd6 3.Rg5 Rhe8 4.Be3 Qe6 5.Nb5 Qe4 6.Nxa7+ -+ (-1.97) Depth: 9/31 00:00:05 4992kN 1...0-0-0 2.Nc3 Bd6 3.Rg5 Rhe8 4.Qf1 Qe6 5.Nb5 Kb8 6.Nxd6 Rxd6 -+ (-1.97) Depth: 10/30 00:00:07 6656kN 1...0-0-0 2.Nc3 Bb4 3.Kh2 Rxd4 4.Be3 Rdd8 5.Bxa7 f6 6.Re4 Rhe8 -+ (-1.97) Depth: 11/30 00:00:12 11857kN 1...0-0-0 2.Nc3 Bd6 3.Rg5 Rhe8 4.Qf1 Qe6 5.d5 Qd7 6.Qb5 Bf3 7.Qxd7+ Kxd7 -+ (-1.90) Depth: 12/35 00:00:26 26620kN 1...0-0-0 2.Nc3 Bb4 3.Kh2 h5 4.Bf4 h4 5.Rg5 Qc6 6.Qe4 hxg3+ 7.Bxg3 Qxe4 8.Nxe4 Be6 -+ (-2.03) Depth: 13/36 00:01:09 71197kN (Athlon XP @ 2200 MHz, 512MB hash, 3-5 man EGTB's 01.11.2003) New game r3k2r/ppp1bp1p/6q1/4R3/3P2b1/6Pp/PP3P2/RNB1Q1K1 b kq - 0 1 Analysis by Rebel 12: 1...0-0 2.Rxe7 +- (2.37) Depth: 1 00:00:00 1...0-0-0 2.Rxe7 Rxd4 +- (1.67) Depth: 1 00:00:00 1...h2+ 2.Kxh2 ³ (-0.39) Depth: 1 00:00:00 1...Qd6 ³ (-0.60) Depth: 1 00:00:00 1...Qf6 µ (-0.91) Depth: 1 00:00:00 1...Be6 µ (-1.17) Depth: 1 00:00:00 1...Be6 2.Nd2 µ (-1.03) Depth: 2 00:00:00 1...Be6 2.d5 h2+ 3.Kxh2 µ (-1.01) Depth: 3 00:00:00 1...Be6 2.d5 Bc5 3.dxe6 Qxg3+ ± (0.81) Depth: 4 00:00:00 1...Qd6 2.Qe4 Bc8 3.Nd2 ³ (-0.27) Depth: 4 00:00:00 1...Qd6 2.Qe4 Bc8 3.Bf4 a5 ³ (-0.39) Depth: 5 00:00:00 1...Qd6 2.Qe4 Bc8 3.Rd5 Qa6 4.Bf4 = (-0.21) Depth: 6 00:00:00 65kN 1...0-0-0 2.Rxe7 h2+ 3.Kg2 Qh5 4.Nd2 Rxd4 ³ (-0.46) Depth: 6 00:00:00 107kN 1...0-0-0 2.Nc3 h2+ 3.Kxh2 Bf6 4.Nd5 Bxe5 5.Ne7+ Kb8 -+ (-1.51) Depth: 7 00:00:00 449kN 1...0-0-0 2.Nc3 Bd6 3.Ra5 Bf3 4.Be3 Qc2 5.Bd2 -+ (-1.43) Depth: 8 00:00:01 875kN 1...0-0-0 2.Nc3 Bd6 3.Ra5 Bf3 4.Qf1 Bg2 5.Qc4 a6 -+ (-1.57) Depth: 9 00:00:02 2267kN 1...0-0-0 2.Nc3 Bd6 3.Ra5 Bf3 4.Kh2 a6 5.Be3 Qe6 6.Qf1 -+ (-1.73) Depth: 10 00:00:05 5735kN 1...0-0-0 2.Nc3 Bd6 3.Rg5 Rhe8 4.Qf1 h2+ 5.Kg2 Qe6 6.Kxh2 Qh6+ 7.Kg1 Bf3 8.Rb1 Qh1# -+ (-1.93) Depth: 11 00:00:19 20489kN 1...0-0-0 2.Nc3 Bd6 -+ (-2.20) Depth: 12 00:01:09 76292kN 1...0-0-0 2.Nc3 Bd6 -+ (-2.20) Depth: 13 00:01:21 91020kN (Athlon XP @ 2200 MHz, 400MB hash, 3-5 man EGTB's 01.11.2003) New game r3k2r/ppp1bp1p/6q1/4R3/3P2b1/6Pp/PP3P2/RNB1Q1K1 b kq - 0 1 Analysis by Hiarcs 9: 1...Be6 -+ (-2.97) Depth: 1/2 00:00:00 1...Be6 -+ (-2.67) Depth: 2/7 00:00:00 1...Be6 2.d5 0-0-0 3.dxe6 ² (0.65) Depth: 2/9 00:00:00 1...Qd6 -+ (-2.05) Depth: 2/9 00:00:00 1...Qd6 2.Qe4 -+ (-2.05) Depth: 2/9 00:00:00 1...Qd6 2.Qe4 -+ (-1.77) Depth: 3/9 00:00:00 1...Qd6 2.Qe4 Bc8 -+ (-1.48) Depth: 3/9 00:00:00 1...h2+ 2.Kxh2 -+ (-1.51) Depth: 3/10 00:00:00 1...h2+ 2.Kxh2 Qf6 -+ (-1.51) Depth: 3/10 00:00:00 1...h2+ 2.Kxh2 Qf6 µ (-1.23) Depth: 4/11 00:00:00 1...h2+ 2.Kxh2 Qd6 3.Qe4 Bc8 ³ (-0.43) Depth: 4/13 00:00:00 1...Qd6 2.Qe4 Bc8 µ (-1.11) Depth: 4/13 00:00:00 1...Qd6 2.Qe4 Bc8 3.Bf4 µ (-1.11) Depth: 4/13 00:00:00 1...Qd6 2.Qe4 Bc8 3.Bf4 µ (-1.38) Depth: 5/13 00:00:00 7kN 1...Qd6 2.Qe4 Bc8 3.Bf4 f5 4.Qe3 -+ (-1.45) Depth: 5/15 00:00:00 17kN 1...h2+ 2.Kxh2 Qd6 3.Qe4 Bc8 -+ (-1.46) Depth: 5/15 00:00:00 20kN 1...h2+ 2.Kxh2 0-0-0 3.f3 Be6 4.Be3 -+ (-1.55) Depth: 5/15 00:00:00 27kN 1...h2+ 2.Kg2 h1B+ 3.Qxh1 Qf6 4.Kg1 µ (-1.32) Depth: 6/21 00:00:00 74kN 1...Kd8 2.Rxe7 µ (-1.33) Depth: 6/21 00:00:00 105kN 1...Kd8 2.Bf4 Bd6 3.Rg5 Qe6 4.Nd2 -+ (-1.76) Depth: 6/21 00:00:00 121kN 1...Kd8 2.Nc3 Bd6 3.Nb5 Bxe5 4.Qxe5 Qc6 -+ (-1.98) Depth: 7/22 00:00:01 259kN 1...Kd8 2.Nc3 Bd6 3.Nb5 Bxe5 4.Qxe5 Qc6 -+ (-1.73) Depth: 8/25 00:00:03 673kN 1...Kd8 2.Bf4 Qc6 3.Qe4 Qxe4 4.Rxe4 -+ (-1.57) Depth: 8/25 00:00:04 898kN 1...Kf8 2.Bf4 -+ (-1.58) Depth: 8/29 00:00:06 1524kN 1...Kf8 2.Bf4 Rg8 3.Qe3 Bf6 4.Bh6+ Bg7 5.Bxg7+ -+ (-1.76) Depth: 8/29 00:00:07 1823kN 1...Kf8 2.Bf4 Rd8 3.Nc3 Bf3 4.Qe3 Qg4 5.Bh6+ -+ (-1.75) Depth: 9/29 00:00:14 3332kN 1...Kf8 2.Qe4 Qxe4 3.Bh6+ Ke8 4.Rxe4 f5 5.Re3 Kf7 6.f3 Bh5 7.Kh2 Rhd8 8.Bf4 -+ (-1.86) Depth: 10/33 00:00:41 9963kN 1...h2+ 2.Kg2 -+ (-1.87) Depth: 10/36 00:00:59 14417kN 1...h2+ 2.Kxh2 0-0-0 3.Nc3 f6 4.Nd5 Bd6 5.Nf4 Qc2 6.Re4 Bb4 7.Qe3 -+ (-1.98) Depth: 10/36 00:01:02 15118kN 1...0-0-0 2.Rxe7 -+ (-1.99) Depth: 10/36 00:01:22 19892kN 1...0-0-0 2.Rxe7 -+ (-2.00) Depth: 10/36 00:01:22 19987kN 1...0-0-0 2.Rxe7 h2+ 3.Kg2 Bf3+ 4.Kxf3 Qc6+ 5.d5 Qxd5+ 6.Re4 Qxe4+ 7.Kxe4 Rhe8+ -+ (-2.74) Depth: 10/36 00:01:35 23143kN 1...0-0-0 2.Nc3 Bb4 3.Kh2 h5 4.Qe4 h4 5.Qxg6 fxg6 -+ (-2.91) Depth: 11/36 00:03:09 44395kN (Athlon XP @ 2200 MHz, 512MB hash, 3-5 man EGTB's 01.11.2003) New game r3k2r/ppp1bp1p/6q1/4R3/3P2b1/6Pp/PP3P2/RNB1Q1K1 b kq - 0 1 Analysis by Shredder 7.04DP1.2: 1...0-0-0 2.Rxe7 Rxd4 ² (0.41) Depth: 1/2 00:00:00 1...0-0-0 2.Rxe7 Rxd4 +- (2.41) Depth: 1/3 00:00:00 1...0-0-0 2.Rxe7 Rxd4 +- (2.81) Depth: 1/3 00:00:00 1...Be6 µ (-1.05) Depth: 1/3 00:00:00 1...Be6 µ (-1.05) Depth: 1/3 00:00:00 1...Be6 2.Kf1 µ (-0.72) Depth: 2/3 00:00:00 1...Be6 2.Bf4 = (-0.06) Depth: 2/4 00:00:00 1...Be6 2.Nc3 = (0.17) Depth: 2/4 00:00:00 1...h2+ 2.Kh1 Be6 = (0.11) Depth: 2/5 00:00:00 1...h2+ 2.Kg2 Be6 = (-0.08) Depth: 2/6 00:00:00 1...h2+ 2.Kxh2 Be6 3.Nc3 = (0.12) Depth: 3/11 00:00:00 1...Be6 2.Qb4 Bxb4 = (0.11) Depth: 3/11 00:00:00 1...Be6 2.d5 h2+ 3.Kh1 = (-0.18) Depth: 3/11 00:00:00 1...Be6 2.d5 h2+ 3.Kh1 a5 = (0.07) Depth: 4/7 00:00:00 1...Be6 2.d5 h2+ 3.Kh1 Bd8 4.dxe6 fxe6 ² (0.58) Depth: 4/9 00:00:00 1...Be6 2.d5 h2+ 3.Kxh2 Bd6 4.dxe6 Bxe5 5.Qxe5 Qxe6 6.Qxh8+ Kd7 +- (2.32) Depth: 4/11 00:00:00 1...h2+ 2.Kxh2 Qd6 3.Qe2 Bxe2 +- (2.31) Depth: 4/11 00:00:00 1...h2+ 2.Kxh2 Qd6 3.Qe2 Bxe2 +- (1.96) Depth: 4/11 00:00:00 1...h2+ 2.Kxh2 Qd6 3.Qe4 Bc8 ± (0.91) Depth: 4/11 00:00:00 1...h2+ 2.Kxh2 Qd6 3.Qe4 Be6 4.Qxb7 ± (0.93) Depth: 5/14 00:00:00 1...Qd6 2.Qe4 Be6 3.Qxh7 Rxh7 ± (0.92) Depth: 5/15 00:00:00 1...Qd6 2.Qe4 Be6 3.Qh4 Bxh4 ² (0.57) Depth: 5/15 00:00:00 1...Qd6 2.Nc3 Be6 3.d5 Bf6 ² (0.47) Depth: 5/15 00:00:00 1...Qd6 2.Qe4 Be6 3.Qxb7 0-0 4.Bh6 ² (0.48) Depth: 6/13 00:00:00 1...Qd6 2.Qe4 Be6 3.Kh1 0-0 4.Qg6+ fxg6 = (0.23) Depth: 7/15 00:00:00 105kN 1...Qd6 2.Qe4 Be6 3.Qxb7 0-0 4.Bh6 Rfe8 = (0.20) Depth: 7/16 00:00:00 114kN 1...Qd6 2.Qe4 Be6 3.Qxb7 0-0 4.Qe4 Rab8 5.Nc3 Rfe8 ² (0.41) Depth: 8/22 00:00:00 293kN 1...0-0-0 2.Rxe7 h2+ 3.Kg2 Bf3+ 4.Kxf3 Qc6+ 5.d5 Qxd5+ 6.Kf4 h1Q 7.Qe6+ fxe6 8.Rxc7+ Kxc7 ² (0.40) Depth: 8/24 00:00:01 371kN 1...0-0-0 2.Rxe7 h2+ 3.Kg2 Bf3+ 4.Kxf3 Qc6+ 5.d5 Qxd5+ 6.Ke3 h1Q 7.Kf4 Qxe1 8.Rxc7+ Kxc7 = (0.05) Depth: 8/26 00:00:01 439kN 1...0-0-0 2.Nc3 Bd6 3.Re3 Qf5 4.Bd2 Rhg8 5.Kh2 µ (-1.40) Depth: 8/35 00:00:03 1169kN 1...0-0-0 2.Nc3 Bd6 3.Re3 Qh5 4.Kh2 Rhg8 5.Re7 Bxe7 6.Qe6+ fxe6 -+ (-1.65) Depth: 9/22 00:00:04 1607kN 1...0-0-0 2.Nc3 Bd6 3.Rg5 Bf3 4.Kh2 Bxg3+ 5.fxg3 Rxd4 6.Rxg6 -+ (-1.65) Depth: 9/24 00:00:04 1804kN 1...0-0-0 2.Nc3 Bd6 3.Rg5 Rhe8 4.Qf1 h2+ 5.Kh1 Bf3+ 6.Kxh2 Qc2 7.Rg7 -+ (-1.79) Depth: 10/29 00:00:07 2976kN 1...0-0-0 2.Nc3 Bd6 3.Re3 h2+ 4.Kxh2 Qh5+ 5.Kg2 Rhe8 6.Qh1 Rxe3 7.f3 Bxf3+ 8.Kf2 Qxh1 -+ (-1.83) Depth: 11/32 00:00:15 5920kN 1...0-0-0 2.Nc3 h2+ 3.Kxh2 Bd6 4.Rb5 Rhe8 5.Qf1 f5 6.Kg1 Qh5 7.Ra5 Kb8 8.Ne4 -+ (-2.06) Depth: 12/36 00:00:36 14104kN 1...0-0-0 2.Nc3 h2+ 3.Kxh2 Bd6 4.Nb5 Bxe5 5.Qxe5 Qc2 6.Qf4 Kb8 7.Nxc7 Qxc7 8.Qxg4 Rhg8 9.Qf4 -+ (-2.26) Depth: 13/37 00:01:28 33734kN (Athlon XP @ 2200 MHz, 512MB hash, 3-5 man EGTB's 01.11.2003) Ernst.
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