Author: Uri Blass
Date: 03:19:51 10/25/03
Go up one level in this thread
On October 25, 2003 at 00:59:40, James T. Walker wrote: >On October 24, 2003 at 10:21:01, Mihaly Szalai wrote: > >>[D]8/6p1/3N4/8/4B3/4K1kp/5p1p/8 w - - 0 1 >> >>This position is nice and not too difficult. (White wins.) >>E.g. Ruffian solves it immediately. >>You should give it a try with your engine. >> >>Thanks >>Mihaly >> >>PS. Junior is baffled once again. >> >>Analysis by Junior 8 (Celeron 1.7, 64MB HT): >> >>1.Nc8 f1Q >> -+ (-10.64) Depth: 3 00:00:00 >>1.Nc4 f1Q >> -+ (-10.06) Depth: 3 00:00:00 >>1.Nf5+ Kg4 2.Kxf2 h1Q 3.Bxh1 >> +- (1.80) Depth: 3 00:00:00 >>1.Nf5+! >> +- (2.10) Depth: 6 00:00:00 1kN >>1.Nf5+ Kg4 2.Kxf2 Kf4 3.Ng3 g5 4.Bh1 >> +- (2.39) Depth: 6 00:00:00 2kN >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Ba8 >> = (0.00) Depth: 9 00:00:00 60kN, tb=1 >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Kg3 >> = (0.00) Depth: 12 00:00:00 207kN, tb=34 >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Kg3 >> = (0.00) Depth: 15 00:00:02 2893kN, tb=124 >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Kg3 >> = (0.00) Depth: 18 00:00:11 12735kN, tb=575 >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Kg3 >> = (0.00) Depth: 20 00:00:41 48366kN, tb=3731 >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Kg3 >> = (0.00) Depth: 22 00:01:23 89541kN, tb=8809 >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Kg3 >> = (0.00) Depth: 23 00:02:20 142297kN, tb=13812 >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Kg3 >> = (0.00) Depth: 24 00:11:21 797448kN, tb=31235 >>1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Bxh1 Kxf5 4.Kg3 >> = (0.00) Depth: 25 00:21:01 1564776kN, tb=49849 >> >>(Szalai, MyTown 24.10.2003) > >Which Ruffian? My Ruffian 1.0.5 is confused even at Depth 21. Ruffian shows a >score of +6.02 for Ke2 and then changes it's mind to a draw again. At depth 22 >the same thing happens again. Ruffian can't make up it's mind if white is >winning or it's a draw. The 0.00 score is only without line so I do not count it. > >Ruffian 1.0.5 UCI: >D1 00:00 -6.28 1.Be4h1 f2f1Q >D1 00:00 -0.03 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1Q 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 something seems to be wrong here How is it possible that Ruffina have a line of 19 plies at depth 1? I guess that ruffian is cheating by learning from previous analysis. >D2 00:00 -0.03 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1Q 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D3 00:00 -0.03 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1Q 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D4 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1Q 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D5 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1Q 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D6 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D7 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D8 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D9 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D10 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D11 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D12 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D13 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D14 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D15 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D16 00:00 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ 9.Kh2g1 Kf4f5 10.Bh1f3 >D17 00:03 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Be4xh1 Kg4xf5 4.Kf2f3 h3h2 >5.Kf3g3 g7g5 6.Kg3xh2 g5g4 7.Bh1d5 Kf5f4 8.Bd5h1 g4g3+ >D18 00:05 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ >D19 00:32 0.00 1.Nd6f5+ Kg3g4 2.Ke3xf2 h2h1N+ 3.Kf2g1 Nh1g3 4.Nf5d6 Ng3xe4 >5.Nd6xe4 h3h2+ 6.Kg1xh2 g7g5 7.Kh2g1 Kg4f4 8.Ne4f2 g5g4 9.Kg1h2 g4g3+ 10.Kh2g1 >g3xf2+ 11.Kg1xf2 Kf4f5 12.Kf2g2 Kf5f4 13.Kg2h1 Kf4e5 14.Kh1g2 Ke5e4 >D19+ 00:40 0.00 1.Ke3e2 >D19 01:01 5.57 1.Ke3e2 h2h1Q 2.Be4xh1 Kg3h2 3.Ke2f1 g7g5 4.Bh1f3 Kh2g3 >5.Bf3c6 Kg3g4 6.Bc6d7+ Kg4f4 7.Kf1xf2 g5g4 8.Nd6f5 Kf4g5 9.Kf2g3 Kg5f6 10.Nf5e3 >Kf6g5 11.Ne3xg4 >D20 01:27 5.63 1.Ke3e2 h2h1Q 2.Be4xh1 Kg3h2 3.Ke2f1 g7g5 4.Bh1f3 Kh2g3 >5.Bf3b7 Kg3g4 6.Bb7c8+ Kg4f4 7.Kf1xf2 g5g4 8.Nd6f5 Kf4e4 9.Kf2g3 Ke4e5 10.Nf5h6 >Ke5e4 11.Bc8b7+ Ke4e5 12.Nh6xg4+ >D21+ 02:07 0.00 1.Ke3e2 >D21 02:48 6.02 1.Ke3e2 h2h1Q 2.Be4xh1 Kg3h2 3.Ke2f1 g7g5 4.Bh1f3 Kh2g3 >5.Bf3b7 Kg3g4 6.Bb7c8+ Kg4f4 7.Kf1xf2 g5g4 8.Nd6f5 h3h2 9.Kf2g2 h2h1Q+ 10.Kg2xh1 >Kf4f3 11.Kh1h2 Kf3f2 12.Bc8b7 Kf2e2 13.Nf5g3+ >D22+ 04:39 0.00 1.Ke3e2 >D22 06:04 6.38 1.Ke3e2 h2h1Q 2.Be4xh1 Kg3h2 3.Ke2f1 g7g5 4.Bh1f3 Kh2g3 >5.Bf3b7 Kg3g4 6.Bb7c8+ Kg4f4 7.Kf1xf2 h3h2 8.Kf2g2 Kf4e5 9.Nd6e8 Ke5f4 10.Kg2xh2 >Kf4f3 11.Ne8f6 Kf3f4 12.Bc8g4 Kf4e5 I do not get the 0.00 scores with 1.0.1 and maybe different part of the tablebases or learning is responsible. p850(64 mbytes hash) New game 8/6p1/3N4/8/4B3/4K1kp/5p1p/8 w - - 0 1 Analysis by Ruffian 1.0.1: 1.Nc4 f1Q -+ (-7.36) Depth: 1/4 00:00:00 1.Nf5+ Kg4 2.Kxf2 h1Q 3.Bxh1 Kxf5 = (0.00) Depth: 1/6 00:00:00 1.Nf5+ Kg4 2.Kxf2 h1Q 3.Bxh1 Kxf5 = (0.00) Depth: 2/8 00:00:00 1.Nf5+ Kg4 2.Kxf2 h1N+ 3.Ke3 h2 4.Nd6 = (0.12) Depth: 3/10 00:00:00 1.Ke2 g5 2.Bh1 ² (0.41) Depth: 3/10 00:00:00 1.Ke2 g5 2.Kf1 g4 = (0.18) Depth: 4/10 00:00:00 1.Ke2 Kf4 2.Bh1 Ke5 3.Nc4+ Kd4 ± (0.74) Depth: 5/11 00:00:00 1.Ke2 h1Q 2.Bxh1 Kh2 3.Bd5 Kg1 ± (0.78) Depth: 6/13 00:00:00 13kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 = (0.00) Depth: 7/13 00:00:00 28kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 = (0.00) Depth: 8/16 00:00:00 68kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 = (0.00) Depth: 9/20 00:00:00 150kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 h2 6.Nh3 = (0.00) Depth: 10/20 00:00:00 270kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 h2 6.Nh3 = (0.00) Depth: 11/22 00:00:01 465kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 h2 6.Nh3 = (0.00) Depth: 12/23 00:00:02 770kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 h2 6.Nh3 = (0.00) Depth: 13/24 00:00:04 1282kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 h2 6.Nh3 = (0.00) Depth: 14/27 00:00:06 2035kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 h2 6.Nh3 = (0.00) Depth: 15/28 00:00:10 3311kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 h2 6.Nh3 = (0.00) Depth: 16/30 00:00:16 5437kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kxf2 Kxh1 4.Ne4 g5 5.Nxg5 h2 6.Nh3 = (0.00) Depth: 17/31 00:00:25 8888kN 1.Ke2 ² (0.35) Depth: 18/31 00:00:43 16226kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kf1 Kxh1 4.Nf5 Kh2 5.Kxf2 Kh1 6.Ne3 Kh2 7.Ng4+ Kh1 8.Kf1 g5 9.Ne3 Kh2 10.Kf2 Kh1 = (0.00) Depth: 18/31 00:00:44 16703kN 1.Ke2 ² (0.35) Depth: 19/33 00:01:05 26542kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kf1 g5 4.Bf3 Kg3 5.Bb7 g4 6.Ne4+ Kf3 7.Nxf2+ Kg3 8.Bc8 h2 9.Nh1+ Kf4 10.Kg2 Ke5 11.Kxh2 Kf4 12.Ng3 +- (5.85) Depth: 19/34 00:02:19 67101kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kf1 g5 4.Bf3 Kg3 5.Bb7 g4 6.Ne4+ Kf3 7.Nxf2+ Kg3 8.Bc8 h2 9.Nh1+ Kf3 10.Bb7+ Kf4 11.Kg2 Ke5 12.Kxh2 Kf4 13.Ng3 Kg5 +- (5.93) Depth: 20/35 00:04:25 139427kN 1.Ke2 h1Q 2.Bxh1 Kh2 3.Kf1 g5 4.Bf3 Kg3 5.Bc6 Kg4 6.Bd7+ Kf4 7.Kxf2 g4 8.Nf5 h2 9.Kg2 h1R 10.Kxh1 Kf3 11.Kh2 Kf4 12.Ng3 Kg5 13.Kg2 +- (5.97) Depth: 21/36 00:07:19 241553kN (, eim 25.10.2003) Uri
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