Author: James T. Walker
Date: 21:59:40 10/24/03
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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. 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 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
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