I thought no engine could find 47...Bh3 at default settings

[ernst]

[Event "It (cat.21)"]
[Site "Linares (Spain)"]
[Date "1998.??.??"]
[EventDate "?"]
[Round "10"]
[Result "0-1"]
[White "Veselin Topalov"]
[Black "Alexey Shirov"]
[ECO "D85"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "106"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7
7.Bb5+ c6 8.Ba4 O-O 9.Ne2 Nd7 10.O-O e5 11.f3 Qe7 12.Be3 Rd8
13.Qc2 Nb6 14.Bb3 Be6 15.Rad1 Nc4 16.Bc1 b5 17.f4 exd4 18.Nxd4
Bg4 19.Rde1 Qc5 20.Kh1 a5 21.h3 Bd7 22.a4 bxa4 23.Ba2 Be8
24.e5 Nb6 25.f5 Nd5 26.Bd2 Nb4 27.Qxa4 Nxa2 28.Qxa2 Bxe5
29.fxg6 hxg6 30.Bg5 Rd5 31.Re3 Qd6 32.Qe2 Bd7 33.c4 Bxd4
34.cxd5 Bxe3 35.Qxe3 Re8 36.Qc3 Qxd5 37.Bh6 Re5 38.Rf3 Qc5
39.Qa1 Bf5 40.Re3 f6 41.Rxe5 Qxe5 42.Qa2+ Qd5 43.Qxd5+ cxd5
44.Bd2 a4 45.Bc3 Kf7 46.h4 Ke6 47.Kg1 Bh3 48.gxh3 Kf5 49.Kf2
Ke4 50.Bxf6 d4 51.Be7 Kd3 52.Bc5 Kc4 53.Be7 Kb3 0-1

[D] 8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - -

Engine: Deep Rybka 4.1 SSE42 x64 by Vasik Rajlich

18.00 0:01 -1.82 1...Be4 2.g4 a3 3.Kf2 g5 4.h5 f5 5.Kg3 a2 6.Bd4 Bc2 7.Ba1 f4+ 8.Kf2 Bd1 9.h6 Bc2 10.Ke2 Be4 11.Bd4 Kf7 12.Bg7 Kg6 13.Kf2 (959.302) 620 TB:33
19.01 0:01 -1.82 1...Be4 2.g4 a3 3.Kf2 g5 4.h5 f5 5.Kg3 a2 6.Bd4 Bc2 7.Ba1 f4+ 8.Kf2 Bd1 9.h6 Bc2 10.Ke2 Be4 11.Bd4 Kf7 12.Bg7 Kg6 13.Kf2 Kh7 14.Ke2 (1.101.539) 624 TB:47
20.01 0:03 -1.87 1...Be4 2.Kf2 f5 3.Bd4 a3 4.g3 a2 5.Ke3 Kd6 6.Kd2 Kc6 7.Ba1 Kc5 8.Ke3 Kc4 9.Be5 Bb1 10.Bd4 Bd3 11.Ba1 Be4 12.Be5 Bb1 13.Bd4 Bd3 14.Ba1 Be4 (2.107.964) 655 TB:108
21.01 0:03 -1.87 1...Be4 2.Kf2 f5 3.Bd4 a3 4.g3 a2 5.Ke3 Kd6 6.Kd2 Kc6 7.Ba1 Kc5 8.Ke3 Kc4 9.Be5 Bb1 10.Ba1 Bc2 11.Kd2 Be4 12.Ke3 Bb1 13.Bd4 Bd3 14.Ba1 Be4 (2.546.376) 671 TB:115
22.01 0:05 -1.87 1...Be4 2.Kf2 f5 3.Bd4 a3 4.g3 a2 5.Ke3 Kd6 6.Kd2 Kc6 7.Ba1 Kc5 8.Ke3 Kc4 9.Be5 Bb1 10.Ba1 Bc2 11.Kd2 Be4 12.Ke3 Bb1 13.Bd4 Bd3 14.Ba1 Be4 (3.648.234) 708 TB:154
23.01 0:06 -1.87 1...Be4 2.Kf2 f5 3.Bd4 a3 4.g3 a2 5.Ke3 Kd6 6.Kd2 Kc6 7.Ba1 Kc5 8.Ke3 Kc4 9.Be5 Bb1 10.Ba1 Bc2 11.Kd2 Be4 12.Ke3 Bb1 13.Bg7 Bd3 14.Bd4 Be2 (4.917.368) 727 TB:196
24.01 0:09 -1.87 1...Be4 2.Kf2 f5 3.Bd4 a3 4.g3 a2 5.Ke3 Kd6 6.Kd2 Kc6 7.Ba1 Kc5 8.Ke3 Kc4 9.Be5 Bb1 10.Ba1 Bc2 11.Kd2 Be4 12.Ke3 Bb1 13.Bf6 Kb4 14.Ba1 Kb3 (6.780.006) 745 TB:372
25.01 0:11 -1.87 1...Be4 2.Kf2 f5 3.Bd4 a3 4.g3 a2 5.Ke3 Kd6 6.Kd2 Kc6 7.Ba1 Kc5 8.Ke3 Kc4 9.Be5 Bb1 10.Ba1 Bc2 11.Kd2 Be4 12.Ke3 Bb1 13.Bf6 Kb4 14.Ba1 Kb3 (8.745.128) 742 TB:562
26.01 0:14 -1.87 1...Be4 2.Kf2 f5 3.Bd4 a3 4.g3 a2 5.Ke3 Kd6 6.Kd2 Kc6 7.Ba1 Kc5 8.Ke3 Kc4 9.Be5 Bb1 10.Ba1 Bc2 11.Kd2 Be4 12.Ke3 Bb1 13.Bf6 Kb4 14.Ba1 Kb3 (10.518.377) 746 TB:1.072
27.01 0:20 -1.87 1...Be4 2.Kf2 f5 3.Bd4 a3 4.g3 a2 5.Ke3 Kd6 6.Kd2 Kc6 7.Ba1 Kc5 8.Ke3 Kc4 9.Be5 Bb1 10.Ba1 Bc2 11.Kd2 Be4 12.Ke3 Bb1 13.Bf6 Kb4 14.Ba1 Kb3 (15.470.960) 760 TB:1.976
28.01 0:54 -1.87 1...Be4 2.Bb2 f5 3.g3 Kd6 4.Kf2 Kc5 5.Ke3 Kb4 6.Kd2 a3 7.Bg7 Kc4 8.Ke3 a2 9.Ba1 Bb1 10.Bf6 Kb4 11.Ba1 Kb3 12.Be5 Kc4 13.Ba1 Bc2 14.Kd2 Be4 (42.216.897) 780 TB:9.069
28.02 0:54 -1.92 1...a3 2.Kf2 Be4 3.g4 f5 4.Kg3 fxg4 5.Kxg4 a2 6.Ba1 Kd6 7.Bd4 Kc6 8.Kf4 Kb5 9.Ke3 Kc4 10.Ba1 Bf5 11.Bd4 Bg4 12.Ba1 Bc8 13.Bd4 Bf5 14.Ba1 Bd7 (42.216.903) 780 TB:9.069
29.01 1:47 -2.01 1...a3 2.Kf2 Bc2 3.g3 Kf5 4.Kf3 Be4+ 5.Kf2 a2 6.Ke3 Kg4 7.Bxf6 Kxg3 8.Kd2 Kf4 9.Bg7 Bb1 10.Bb2 Ke4 11.Bc3 d4 12.Bb2 Bd3 13.Ba1 Bc4 14.Bb2 Bf7 (86.111.174) 804 TB:17.481
29.09 5:14 -2.04++ 1...Bh3 2.gxh3 Kf5 (277.297.294) 881 TB:117.862
29.01 6:46 -2.19++ 1...Bh3 2.gxh3 Kf5 (366.669.340) 901 TB:146.723
29.01 8:56 -2.59++ 1...Bh3 2.gxh3 Kf5 (493.088.429) 919 TB:198.090
29.01 13:33 -3.39++ 1...Bh3 2.gxh3 Kf5 3.Kf2 Ke4 (790.868.796) 972 TB:302.854
29.01 17:44 -4.99++ 1...Bh3 2.gxh3 Kf5 3.Kf2 Ke4 (1.075.512.773) 1010 TB:388.700
29.01 20:02 -8.14 1...Bh3 2.Kf2 Kf5 3.Bb2 Ke4 4.g3 Kd3 5.Kf3 d4 6.Kf2 Kc2 7.Bxd4 f5 8.Kg1 a3 9.Ba1 a2 10.Kf2 Kb1 11.Bd4 Bg4 12.Ke1 Bh5 (1.210.256.676) 1006 TB:433.712
30.01 22:30 -8.14 1...Bh3 2.Kf2 Kf5 3.Bb2 Ke4 4.g3 Kd3 5.Kf3 d4 6.Kf2 Kc2 7.Bxd4 f5 8.Kg1 a3 9.Ba1 a2 10.Kf2 Kb1 11.Bd4 Bg4 12.Ke1 Bh5 (1.350.799.196) 1000 TB:497.976
31.01 25:28 -8.14 1...Bh3 2.Kf2 Kf5 3.Bb2 Ke4 4.g3 Kd3 5.Kf3 d4 6.Kf2 Kc2 7.Bxd4 f5 8.Kg1 a3 9.Ba1 a2 10.Kf2 Kb1 11.Bd4 Bg4 12.Ke1 Bh5 (1.528.032.470) 999 TB:590.715
32.01 29:53 -8.14 1...Bh3 2.Kf2 Kf5 3.Bb2 Ke4 4.g3 Kd3 5.Kf3 d4 6.Kf2 Kc2 7.Bxd4 f5 8.Kg1 a3 9.Ba1 a2 10.Kf2 Kb1 11.Bd4 Bg4 12.Ke1 Bh5 13.Bh8 a1Q (1.775.306.105) 989 TB:745.531

[perejaslav]

New game
8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - 0 1

Analysis by Zappa Mexico II:

1...a3 2.Kf2 Be4 3.g3 g5 4.hxg5 fxg5 5.Ke3 Kf5 6.Bd4 Kg4 7.Kf2 a2 8.Be5 Bf5 9.Bd4 Bh7 10.Bc3 Bd3 11.Ke3 Bc2 12.Kf2 Be4 13.Bd4 Bb1 14.Bc3 Bd3
-+ (-1.48) Depth: 14/23 00:00:00 1551kN
-+ (-1.65) Depth: 23/49 00:00:55 228kN, tb=3054
1...Bh3 2.Kh2 Bg4 3.Kg3 Kf5 4.Bb2 Bh5 5.Kf2 Ke4 6.g3 Bg4 7.Ke1 Kd3 8.Kf2 d4 9.Ke1 Bf3 10.Kf2 Be4 11.Ke1 f5 12.Kf2 Bd5 13.Ke1 Kc4
-+ (-2.08) Depth: 23/64 00:02:59 781kN, tb=20006
-+ (-2.08) Depth: 23/64 00:03:00 783kN, tb=20029

On Corei5 no overclocked

[kgburcham]

4 threads
4x2.8

[D] 8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - 0 1

Houdini 1.01 x64 :
default settings

1...Be4 2.g3 f5 3.Kf2 Kd6 4.Ke3 Kc5 5.Bf6 Kc4
-+ (-1.73) Depth: 27/46 00:01:05 543mN
1...Be4 2.g3 f5 3.Kf2 Kd6 4.Ke3 Kc5
-+ (-1.73) Depth: 28/46 00:01:44 877mN
1...Bh3 2.gxh3
-+ (-1.82 ++) Depth: 28/68 00:03:15 1673mN
1...Bh3 2.gxh3
-+ (-2.01 ++) Depth: 28/68 00:03:38 1876mN
1...Bh3 2.gxh3
-+ (-2.45 ++) Depth: 28/68 00:04:36 2399mN

[kgburcham]

4 threads
4x2.8

[D] 8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - 0 1

Houdini 1.01 x64 :
default settings

1...Be4 2.g3 f5 3.Kf2 Kd6 4.Ke3 Kc5 5.Bf6 Kc4
-+ (-1.73) Depth: 27/46 00:01:05 543mN
1...Be4 2.g3 f5 3.Kf2 Kd6 4.Ke3 Kc5
-+ (-1.73) Depth: 28/46 00:01:44 877mN
1...Bh3 2.gxh3
-+ (-1.82 ++) Depth: 28/68 00:03:15 1673mN
1...Bh3 2.gxh3
-+ (-2.01 ++) Depth: 28/68 00:03:38 1876mN
1...Bh3 2.gxh3
-+ (-2.45 ++) Depth: 28/68 00:04:36 2399mN

Houdini 1.5ab-16 x64 (4096 MB)
by Robert Houdart
12 threads HT off

29/52 0:57 -1.50 47...Be4 48.g3 f5 49.Bd4 Kd6 50.Kf1 Kc6 51.Kf2 a3 52.Ke3 Kb5 (1.274.362.654) 22188
29/64 1:52 -1.58++ 47...Bh3 (2.603.485.824) 23161
29/64 2:10 -1.74++ 47...Bh3 (3.062.745.421) 23399
29/66 2:41 -2.10++ 47...Bh3 (3.882.402.186) 24050
29/70 3:58 -3.06++ 47...Bh3 (6.200.454.326) 25993
29/81 6:53 -5.62++ 47...Bh3 (11.544.525.405) 27887
29/81 7:24 -5.62 47...Bh3 48.gxh3 Kf5 49.Kf2 Ke4 50.Bxf6 d4 51.Be7 Kd3 52.Bg5 Kc2 53.Kg3 d3 54.Kg4 a3 (12.880.332.861) 28946
best move: Bf5-h3 time: 7:25.828 min n/s: 28.946.000 CPU 99.7% n/s(1CPU): 29.033.099 nodes: 12.880.332.861

Critter 1.0 64-bit SSE4
by Richard Vida

30/71 10:04 -2.03++ 47...Bh3 (9.592.440.039) 15859
30/71 11:00 -2.15++ 47...Bh3 (10.630.572.092) 16095

[MrEdCollins]

The latest version of Komodo (2.0.3) finds it... after almost 3 1/2 hours.

34 -2.78 3326.0M 207:59.44 Bh3 Kh2 Bg4 Kg3 Kf5 Bb4 d4 Kf2 Ke4 Ba3 f5 g3 Bh5 Ke1 Ke3 Bc1+ Kf3 Bb2 Kxg3 Bxd4 Kxh4 Bc5 g5 Kf2 f4 Kg2 Kg4 Be7 Kf5 Kh3 g4+ Kh4 Bf7 Bd6 g3 Kh3 Bc4 Bb4 Bf1+ Kh4 g2 Bc5 Ke4 Kg4 Be2+ Kh3


After 9 hours the evaluation eventually climbs to -5.30

38 -5.30 2541.2M 555:06.38 Bh3 Bb2 Kf5 g3 Ke4 Kf2 f5 Ke2 Bg4+ Kd2 Kf3 Be5 a3 Kc2 d4 Bxd4 Kxg3 Bc5 a2 Kb2 a1=Q+ Kxa1 f4 Bd6 Kf3 Kb2 Ke3 Bb4 f3 Kc3 f2 Bc5+ Kf3 Bxf2 Kxf2 Kd4 Kg3 Ke3 Kxh4 Kf2 Kh3 Ke3 Kg3 Kd4 Kh4 Kc3 Be2 Kb2 Kg3 Kb1 g5

[Aser Huerga]

The latest version of Komodo (2.0.3) finds it... after almost 3 1/2 hours.

¿In a Quad Core i7 3.0Ghz or in a Atom 1.6Ghz? It's neccessary to say the hardware for a reference. Thanks!

[MrEdCollins]

The latest version of Komodo (2.0.3) finds it... after almost 3 1/2 hours.

¿In a Quad Core i7 3.0Ghz or in a Atom 1.6Ghz? It's neccessary to say the hardware for a reference. Thanks!

Ah, good point. Thanks.

Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66 GHZ
8.00 GB, 64-bit Operating System
The Komodo compile was komodo-203-64-ja.exe
(WinBoard was the GUI.)