Author: Uri Blass
Date: 03:14:16 11/06/01
[D]bq4r1/4b2k/4p3/1P2nPp1/P1P4p/4BP1P/1N1R1QP1/7K b - - 0 37 This position could happen in my correspondence game How much time does your program need to find g4 Harder tests: 1)How much time does it need to find that g4 is winning(advantage of at least 1 pawn for black)? I believe that no program can see it in less than 100 hours 2)How much time does it need to avoid the previous moves that could lead to this position: I tried yace and it could not avoid the previous moves and I post the analysis of yace that includes the previous positions Gambittiger(48 Mbytes hash p800) needed a very long time to avoid 37.exf5 and I post also Gambittiger's analysis Uri Blass - Yoav duthan [D]bq4r1/4bp1k/4p3/1P2n1p1/2P1P2p/P3BP1P/1N1R1QP1/7K w - - 0 1 Analysis by Yace 0.99.56: 36.Bxg5 Bxg5 -+ (-2.69) Depth: 1 00:00:00 36.b6 Bxa3 37.Bxg5 = (0.13) Depth: 1 00:00:00 36.Bc5 Bxc5 37.Qxc5 Rc8 38.Qd4 f6 39.Kg1 Qc7 40.b6 Qc5 41.Qxc5 Rxc5 ² (0.30) Depth: 1 00:00:00 36.Bc5 Bxc5 37.Qxc5 Rc8 38.Qd4 f6 39.Kg1 Qc7 40.b6 Qc5 41.Qxc5 Rxc5 ² (0.30) Depth: 2 00:00:00 36.Bc5 Bxc5 37.Qxc5 Rc8 38.Qd4 f6 39.Kg1 Qc7 40.b6 Qc5 41.Qxc5 Rxc5 ² (0.30) Depth: 3 00:00:00 36.Bc5 Bxc5 37.Qxc5 Rc8 38.Qd4 f6 39.Kg1 Qc7 40.b6 Qc5 41.Qxc5 Rxc5 ² (0.30) Depth: 4 00:00:00 36.Bc5 Bxc5 37.Qxc5 Rc8 38.Qd4 f6 39.Kg1 Qc7 40.b6 Qc5 41.Qxc5 Rxc5 ² (0.30) Depth: 5 00:00:00 36.Bc5 Bxc5 37.Qxc5 Rc8 38.Qd4 f6 39.Kg1 Qc7 40.b6 Qc5 41.Qxc5 Rxc5 ² (0.30) Depth: 6 00:00:00 36.Bc5 Bxc5 37.Qxc5 Rc8 38.Qd4 f6 39.Kg1 Qc7 40.b6 Qc5 41.Qxc5 Rxc5 ² (0.30) Depth: 7 00:00:00 1kN 36.Bc5 Bxc5 37.Qxc5 Rc8 38.Qd4 f6 39.Kg1 Qc7 40.b6 Qc5 41.Qxc5 Rxc5 ² (0.30) Depth: 8 00:00:00 3kN 36.a4 Rc8 37.c5 Bxc5 38.Bxc5 Rxc5 39.Qxc5 Qc7 40.Qxc7 Nc4 ² (0.26) Depth: 9 00:00:06 2055kN 36.a4 Rd8 37.f4 Rxd2 38.Bxd2 gxf4 39.Qxf4 ² (0.42) Depth: 9 00:00:13 4253kN 36.a4 Rd8 37.f4 Rxd2 38.Bxd2 Ng6 39.fxg5 Kg8 40.Qe3 Qe5 41.Nd3 ² (0.46) Depth: 10 00:00:39 11831kN 36.a4 Rd8 37.a5 Rxd2 38.Qxd2 f6 39.Qc3 Bd6 40.a6 Qc8 41.c5 Kg7 ² (0.44) Depth: 11 00:01:53 34313kN 36.a4 Rd8 37.c5 Qc7 38.Rxd8 Bxd8 39.c6 ² (0.56) Depth: 12 00:07:06 131201kN 36.a4 Kg7 37.c5 f6 38.c6 Rd8 39.Rc2 Rh8 ² (0.58) Depth: 13 00:17:52 326773kN 36.a4 f5 37.exf5 exf5 38.c5 f4 39.Bd4 Bf6 40.c6 Qc7 ² (0.64) Depth: 14 01:24:13 1487386kN 36.a4 f5 37.exf5 exf5 38.c5 f4 39.Bd4 Bf6 40.c6 Re8 41.Rd1 Kg7 42.Nd3 Nxd3 43.Rxd3 Qc7 ² (0.64) Depth: 15 02:50:31 2891192kN 36.a4 Rd8 37.c5 Rxd2 38.Qxd2 Kg6 39.Bd4 f6 40.Qc3 Nf7 ² (0.69) Depth: 16 10:14:44 1573918kN (Blass, Tel-aviv 15.10.2001) after 36.a4 f5 Uri Blass - Yoav duthan bq4r1/4b2k/4p3/1P2npp1/P1P1P2p/4BP1P/1N1R1QP1/7K w - f6 0 1 Analysis by Yace 0.99.56: 37.exf5 exf5 ² (0.33) Depth: 1 00:00:00 37.Ba7 ² (0.37) Depth: 1 00:00:00 37.Ba7 Qc7 ² (0.28) Depth: 2 00:00:00 37.exf5 exf5 ² (0.33) Depth: 2 00:00:00 37.exf5 exf5 38.Bd4 Bf6 ² (0.44) Depth: 3 00:00:00 37.exf5 exf5 38.Bd4 Rd8 39.c5 ² (0.58) Depth: 4 00:00:00 37.exf5 exf5 38.Bd4 Bb4 39.Rd1 Rd8 ² (0.42) Depth: 5 00:00:00 22kN 37.exf5 exf5 38.Bd4 Bb4 39.Rd1 Re8 40.Nd3 ² (0.57) Depth: 6 00:00:00 52kN 37.exf5 exf5 38.Bd4 Bf6 39.Nd3 Re8 40.Nxe5 Bxe5 ² (0.46) Depth: 7 00:00:01 326kN 37.exf5 exf5 38.c5 Qc7 39.c6 Rd8 40.Rd6 ² (0.50) Depth: 8 00:00:04 1304kN 37.exf5 exf5 38.c5 f4 39.Bd4 Re8 40.Nd3 Nxd3 41.Rxd3 Bd5 ² (0.60) Depth: 9 00:00:14 4125kN 37.exf5 exf5 38.c5 f4 39.Bd4 Re8 40.c6 Bb4 41.Re2 Qc7 42.Nc4 ² (0.64) Depth: 10 00:00:32 10097kN 37.exf5 exf5 38.c5 f4 39.Bd4 Re8 40.c6 Bf6 41.Nd3 Qc7 42.Nxe5 Bxe5 ² (0.61) Depth: 11 00:01:35 27978kN 37.exf5 exf5 38.c5 f4 39.Bd4 Re8 40.c6 Bf6 41.Bc5 Qc7 42.Rd6 Bg7 43.b6 ² (0.67) Depth: 12 00:05:40 101008kN 37.exf5 exf5 38.c5 f4 39.Bd4 Bf6 40.c6 Re8 41.Rd1 Kg7 ² (0.64) Depth: 13 00:14:58 263049kN 37.exf5 exf5 38.c5 Re8 39.c6 f4 40.Bc5 Kg8 41.Bxe7 Rxe7 42.Qc5 ± (0.72) Depth: 14 01:08:32 1170634kN 37.exf5 exf5 38.c5 Re8 39.c6 f4 40.Bc5 Bf6 41.Qd4 Kg7 42.Bd6 Qc8 43.Qd5 Qe6 44.Qxe6 Rxe6 ± (0.75) Depth: 15 03:00:49 3055398kN 37.exf5 exf5 38.c5 f4 39.Bd4 Kh6 40.c6 Re8 41.Rd1 Bf8 ± (0.71) Depth: 16 12:05:33 3574812kN (Blass, Tel-aviv 17.10.2001) Uri Blass - Yoav duthan bq4r1/4b2k/4p3/1P2npp1/P1P1P2p/4BP1P/1N1R1QP1/7K w - f6 0 1 Analysis by Gambit Tiger 2.0: 37.Ba7 Qc7 38.Bb6 Qb8 39.exf5 Bb4 40.Re2 exf5 ² (0.40) Depth: 7 00:00:00 82kN 37.exf5 exf5 38.Ba7 Qe8 39.c5 f4 40.c6 Bb4 ± (0.82) Depth: 7 00:00:00 146kN 37.exf5 exf5 38.Ba7 Qc8 39.c5 f4 40.c6 Bb4 41.Rd4 ± (0.82) Depth: 8 00:00:01 246kN 37.exf5 exf5 38.Ba7 Qc8 39.c5 Rd8 40.c6 Bb4 41.Rxd8 Qxd8 42.Bc5 ± (1.02) Depth: 9 00:00:02 517kN 37.exf5 exf5 38.Ba7 Qc8 39.c5 Rd8 40.Rxd8 Qxd8 41.c6 Bb4 42.Bc5 ± (1.02) Depth: 10 00:00:04 1044kN 37.exf5 exf5 38.Bd4 Bb4 39.Rd1 Ng6 40.c5 Bd5 41.Nd3 Ba5 42.c6 Bb3 ± (1.08) Depth: 11 00:00:26 6109kN 37.exf5 exf5 38.c5 f4 39.Bd4 Re8 40.Qe1 Bf6 41.Qb1+ Kg7 42.c6 Rd8 43.Qe1 Rd5 ± (1.36) Depth: 12 00:01:40 24340kN 37.exf5 exf5 38.c5 f4 39.Bd4 Bd5 40.Bc3 Rd8 41.c6 Be6 42.Rxd8 Bxd8 43.Qc5 Bf6 44.Qd4 ± (1.30) Depth: 13 00:02:54 42339kN 37.exf5 exf5 38.c5 Rg6 39.Bd4 Bd5 40.Rd1 Bf6 41.c6 Bb3 42.Rc1 Qd6 43.Ba7 Qd8 44.a5 Qxa5 +- (1.42) Depth: 14 00:14:06 224597kN 37.exf5 exf5 38.c5 Rg6 39.Bd4 Bd5 40.Re2 Bf6 41.f4 gxf4 42.Qxf4 Nc6 43.Qxb8 Nxb8 44.Bxf6 Rxf6 45.a5 +- (1.48) Depth: 15 00:33:29 535898kN 37.exf5 g4 38.Ba7 Qf8 39.fxg4 Nxg4 40.hxg4 Rxg4 41.Qe3 Qxf5 42.Qh3 Qf1+ 43.Bg1 Rg3 44.Qh2 Be4 45.a5 ± (1.24) Depth: 16 02:01:12 2015982kN 37.exf5 g4 38.Ba7 Qf8 39.fxg4 Nxg4 40.hxg4 Rxg4 41.Qe3 Qxf5 42.Qh3 Qf1+ 43.Bg1 Rg3 44.Qh2 Be4 45.a5 ± (1.16) Depth: 17 04:41:24 4736653kN 37.Ba7 Qf8 38.Bd4 Nd7 39.exf5 exf5 40.Nd3 g4 41.c5 gxh3 42.gxh3 Rg3 43.c6 Rxh3+ 44.Kg2 Rg3+ 45.Kf1 Bd6 46.a5 ± (0.84) Depth: 18 21:46:30 22282831kN Uri
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