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Subject: Re: A difficult position: only Rybka finds the solution...

Author: Eelco de Groot

Date: 19:54:44 12/15/05

Go up one level in this thread


On December 15, 2005 at 10:08:38, Ernest Bonnem wrote:

>From the German CSS Forum (Frank v/d Muysenberg, 30 July 2005):
>
>[D]r3r1k1/npq1pp1p/6p1/p1P2bN1/5P2/1P4P1/PQ4BP/2R2RK1 w - - 0 1
>
>at the time no program could find 1.g4!
>... except Shredder 6 Paderborn (5 hours on P4-2.53GHz)
>
>6 months later, I am told Fritz 9, on Athlon64-2.4GHz, also gets it , in over 5
>hours.
>
>But look at Rybka, on my "slow" AMD mobile 1.66GHz, 256MB hash:
>
>VP (Default: Very Positional):
>Rybka Beta 107 min     Rybka Preview 89 min
>SP (Default: Slightly Positional):
>Rybka Beta  47 min     Rybka Preview 47 min
>ST (Default: Slightly Tactical):
>Rybka Beta 125 min
>VT (Default: Very Tactical):
>Rybka Beta  84 min
>
>
>
>r3r1k1/npq1pp1p/6p1/p1P2bN1/5P2/1P4P1/PQ4BP/2R2RK1 w - - 0 1
>VP
>Rybka Beta
>  7.00	 0:00 	+0.72 	1.Bd5 e6 2.Ne4 Bxe4 (31.041) 39
>  8.00	 0:01 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 (75.180) 43
>  9.00	 0:03 	+0.70 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 (140.951) 47
> 10.00	 0:06 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Red8 (310.351) 51
> 11.01	 0:11 	+0.63 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.Qc3 (611.449)
>55
> 12.01	 0:27 	+0.53 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.a3 Rxd1
>(1.504.058) 55
> 12.02	 0:29 	+0.65 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(1.647.453) 58
> 13.01	 0:52 	+0.78 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(3.018.412) 59
> 14.01	 1:18 	+0.66 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(4.674.604) 60
> 15.01	 2:43 	+0.81 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(9.618.660) 60
> 16.01	 4:25 	+0.75 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(15.907.947) 61
> 17.01	 9:28 	+0.83 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(34.282.191) 61
> 18.01	18:33 	+0.61 	1.Qe5 Qxe5 2.fxe5 Rab8 3.g4 Bxg4 4.Rxf7 h6 5.Rf4 Bc8
>(68.166.835) 62
> 19.01	51:00 	+0.50 	1.Qe5 Qxe5 2.fxe5 Rab8 3.g4 (177.795.933) 59
> 19.13	107:20 	+1.15 	1.g4 Bxg4 2.Bd5 e6 3.Ne4 f5 4.Nf6+ (341.653.213) 54
> 20.01	150:04 	+1.21 	1.g4 Bxg4 2.Bd5 e6 (458.628.701) 52
>best move: g3-g4 time: 152:19.132 min  n/s: 52.283  nodes: 466.575.360
>Rybka Preview
>  7.00	 0:00 	+0.72 	1.Bd5 e6 2.Ne4 Bxe4 (31.041) 36
>  8.00	 0:01 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 (75.180) 42
>  9.00	 0:03 	+0.70 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 (140.951) 47
> 10.00	 0:06 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Red8 (310.351) 51
> 11.01	 0:11 	+0.63 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.Qc3 (611.479)
>55
> 12.01	 0:27 	+0.53 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.a3 Rxd1
>(1.504.072) 57
> 12.02	 0:29 	+0.65 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>(1.647.467) 58
> 13.01	 0:51 	+0.78 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 (3.018.454) 60
> 14.01	 1:18 	+0.66 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 7.exf6 (4.674.681) 61
> 15.01	 2:40 	+0.81 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 7.exf6 Red8 (9.618.816) 61
> 16.01	 4:22 	+0.75 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 7.exf6 Red8 (15.909.078) 62
> 17.01	 9:22 	+0.83 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 7.exf6 Red8 (34.289.317) 62
> 18.01	18:22 	+0.61 	1.Qe5 Qxe5 2.fxe5 Rab8 3.g4 Bxg4 4.Rxf7 h6 5.Rf4 Bc8 6.Nf7
>Kg7 7.Bd5 Bf5 (68.177.224) 63
> 19.01	50:52 	+0.65 	1.Qe5 Qxe5 2.fxe5 Rab8 3.Rf4 h6 4.Nf3 Nc6 (179.157.676) 60
> 19.13	89:10 	+1.00 	1.g4 Bxg4 2.Bd5 e6 3.Ne4 f5 (287.862.272) 55
> 20.01	135:03 	+1.01 	1.g4 Bxg4 2.Bd5 (415.351.759) 52
>best move: g3-g4 time: 222:50.896 min  n/s: 51.250  nodes: 669.122.560
>SP
>Rybka Beta
>  7.00	 0:00 	+0.72 	1.Bd5 e6 2.Ne4 Bxe4 (31.127) 46
>  8.00	 0:01 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 (75.315) 47
>  9.00	 0:02 	+0.70 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 (141.228) 49
> 10.00	 0:06 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Red8 (311.794) 50
> 11.01	 0:12 	+0.63 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.Qc3 (618.554)
>56
> 12.01	 0:29 	+0.53 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.a3 Rxd1
>(1.496.029) 53
> 12.02	 0:31 	+0.65 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(1.640.178) 54
> 13.01	 0:54 	+0.78 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(2.989.519) 56
> 14.01	 1:24 	+0.66 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(4.673.075) 56
> 15.01	 2:55 	+0.81 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(9.475.840) 55
> 16.01	 4:53 	+0.75 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(15.903.688) 55
> 17.01	10:35 	+0.83 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(34.247.396) 55
> 18.01	20:42 	+0.61 	1.Qe5 Qxe5 2.fxe5 Rab8 3.g4 Bxg4 4.Rxf7 h6 5.Rf4 Bc8
>(66.562.397) 54
> 18.13	47:10 	+0.86 	1.g4 Bxg4 2.Bd5 e6 3.Ne4 f5 4.Nf6+ Kf7 5.Nxe8 Rxe8
>(127.939.791) 46
> 19.01	68:52 	+1.05 	1.g4 Bxg4 2.Bd5 e6 3.Ne4 f5 (179.252.082) 44
>best move: g3-g4 time: 71:17.330 min  n/s: 44.316  nodes: 185.065.472
>Rybka Preview
>  7.00	 0:00 	+0.72 	1.Bd5 e6 2.Ne4 Bxe4 (31.127) 45
>  8.00	 0:01 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 (75.315) 46
>  9.00	 0:02 	+0.70 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 (141.228) 49
> 10.00	 0:06 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Red8 (311.794) 51
> 11.01	 0:11 	+0.63 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.Qc3 (618.568)
>56
> 12.01	 0:28 	+0.53 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.a3 Rxd1
>(1.496.043) 53
> 12.02	 0:30 	+0.65 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>(1.640.192) 56
> 13.01	 0:54 	+0.78 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 (2.989.561) 57
> 14.01	 1:23 	+0.66 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 7.exf6 (4.673.175) 57
> 15.01	 2:52 	+0.81 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 7.exf6 Red8 (9.476.005) 56
> 16.01	 4:49 	+0.75 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 7.exf6 Red8 (15.903.795) 56
> 17.01	10:25 	+0.83 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4 6.Ne4
>f5 7.exf6 Red8 (34.250.575) 56
> 18.01	20:25 	+0.61 	1.Qe5 Qxe5 2.fxe5 Rab8 3.g4 Bxg4 4.Rxf7 h6 5.Rf4 Bc8 6.Nf7
>Kg7 7.Bd5 Bf5 (66.563.379) 55
> 18.13	46:49 	+0.93 	1.g4 Bxg4 2.Bd5 e6 3.Ne4 f5 4.Nf6+ Kf7 5.Bg2 Nc6 6.Nxe8
>Rxe8 7.Bxc6 bxc6 (128.971.136) 47
>best move: g3-g4 time: 51:42.802 min  n/s: 46.826  nodes: 141.836.288
>ST
>Rybka Beta
>  7.00	 0:00 	+0.72 	1.Bd5 e6 2.Ne4 Bxe4 (42.468) 55
>  8.00	 0:01 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 (102.237) 55
>  9.00	 0:03 	+0.70 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 (210.916) 58
> 10.00	 0:07 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Red8 (473.081) 62
> 11.01	 0:14 	+0.63 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Rad8 5.Qc3 (913.687)
>65
> 12.01	 0:36 	+0.47 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Rad8 4.Qe5 Qd7 5.Qd6 Qxd6
>(2.283.641) 65
> 12.02	 0:39 	+0.65 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(2.472.236) 65
> 13.01	 1:07 	+0.78 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(4.418.660) 67
> 14.01	 1:41 	+0.66 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(6.805.548) 68
> 15.01	 3:29 	+0.81 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(14.049.615) 68
> 16.01	 5:50 	+0.75 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(23.743.155) 69
> 17.01	11:59 	+0.83 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(48.069.662) 68
> 18.01	21:00 	+0.67 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 Red8 4.Bxf7+ Kg7 5.Be6 Nd4
>(83.560.192) 67
> 19.01	58:51 	+0.56 	1.Qe5 Qxe5 2.fxe5 Rab8 3.h3 Nc6 4.g4 Be6 5.Nxe6 fxe6
>(237.993.011) 69
> 19.13	124:44 	+0.90 	1.g4 Bxg4 2.Bd5 e6 3.Ne4 f5 (463.756.772) 63
>best move: g3-g4 time: 174:39.338 min  n/s: 61.709  nodes: 631.472.128
>VT
>Rybka Beta
>  6.00	 0:00 	+0.80 	1.Qe5 Qxe5 2.fxe5 Nc6 (11.243) 36
>  7.00	 0:00 	+0.66 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 (32.812) 45
>  7.00	 0:00 	+0.72 	1.Bd5 e6 2.Ne4 Bxe4 (42.496) 45
>  8.00	 0:02 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 (102.109) 48
>  9.00	 0:04 	+0.70 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 (211.051) 53
> 10.00	 0:08 	+0.74 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Nc6 4.Rcd1 Red8 (467.784) 58
> 11.01	 0:17 	+0.48 	1.Bd5 e6 2.Bf3 Red8 3.Ne4 Bxe4 4.Bxe4 Nb5 5.a4 (1.023.432)
>60
> 12.01	 0:58 	+0.47 	1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Rad8 4.Qe5 Qd7 5.Qd6 Qxd6
>(3.390.629) 59
> 12.02	 1:00 	+0.65 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(3.548.567) 60
> 13.01	 1:29 	+0.78 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(5.537.580) 63
> 14.01	 2:09 	+0.66 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(8.187.080) 64
> 15.01	 4:03 	+0.81 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(15.532.125) 65
> 16.01	 6:43 	+0.75 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(26.126.969) 66
> 17.01	13:24 	+0.83 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 e6 4.Bxc6 bxc6 5.g4 Bxg4
>(51.632.342) 65
> 18.01	23:59 	+0.61 	1.Qe5 Qxe5 2.fxe5 Nc6 3.Bd5 Red8 4.Bxf7+ Kg7 5.Be6 Nd4
>(91.719.752) 65
> 18.13	55:42 	+0.91 	1.g4 Bxg4 2.Bd5 e6 3.Ne4 f5 (184.321.913) 56
> 19.01	84:18 	+1.03 	1.g4 Bxg4 2.Bd5 e6 3.Ne4 f5 (272.004.452) 55
> 20.01	154:10 	+1.06 	1.g4 Bxg4 2.Bd5 e6 (480.577.815) 53
>best move: g3-g4 time: 224:34.605 min  n/s: 53.731  nodes: 706.945.024

Was this one of Michael Gurevich testpositions? I can't remember this one in CSS
but haven't looked it up.
I haven't yet found a good Gambit Fruit setting for this. Almost default
settings with only more Chess Knowledge, less lazy eval, needs about an hour and
a half. Not sure if trying to improve this with just the settings would not just
hurt playing strength..

Gambit Fruit 4bx
Rebel Reductions
Chess Knowledge = 300
Quiescense Check plies = 2 [Default = 1]
History Treshold = 70 [Default = 70]
Pawn Shelter = 100 [Default = 100]
Passed pawns = 100 [Default = 100]
(200 Mb HT, Athlon 2009 MHz)

00:00:00.0	1,51	3	804		Bd5 e6 Bf3
00:00:00.0	1,05	4	2623		Bd5 e6 Bf3 Nc6
00:00:00.0	1,08	5	10683		Bd5 e6 Bf3 e5 Bd5
00:00:00.1	0,91	6	31566		Bd5 e6 Bf3 Nc6 Qf6 Rad8
00:00:00.2	0,92	7	107585		Bd5 e6 Bf3 Nc6 Rfe1 Rad8 Kh1
00:00:00.5	0,81	8	256031		Bd5 e6 Bf3 h6 Ne4 Bxe4 Bxe4 Nc6 Rcd1
00:00:01.1	0,69	9	677155		Bd5 e6 Bf3 h6 Ne4 Bxe4 Bxe4 Nc6 Rcd1 Rad8
00:00:01.6	0,75	9	1007277		Qe5 Qxe5 fxe5 Nc6 g4 Bxg4 Rxf7 Nxe5 Rxh7 Bf3 Nxf3
Nxf3+ Bxf3 Kxh7 Bxb7
00:00:02.2	0,71	10	1382679		Qe5 Qxe5 fxe5 Nc6 Bd5 Rf8 e6 f6 Nf7 Bd3 Rf4
00:00:04.4	0,82	11	2897494		Qe5 Qxe5 fxe5 Nc6 Bd5 Rf8 e6 f6 Nf7 Bd3 Rf4 g5
00:00:07.6	0,65	12	5155878		Qe5 Qxe5 fxe5 Nc6 Bd5 e6 Bxc6 bxc6 g4 Bxg4 Rxf7 h6
Rf4 Be2
00:00:17.7	0,49	13	12469333	Qe5 Qxe5 fxe5 Nc6 g4 Bxg4 Nxf7 Kg7 Bd5 Bf5 Rf2 Nb4
Bc4 Rf8
00:01:02.5	0,62	14	43639028	Qe5 Qxe5 fxe5 Nc6 Bd5 e6 Bxc6 bxc6 Rcd1 Red8 Rd6 h6
Nf3 Be4 Kg2 Rab8
00:01:36.5	0,47	15	68593782	Qe5 Qxe5 fxe5 Nc6 Bd5 e6 Bxc6 bxc6 Rcd1 Red8 Rd6 h6
Nf3 Be4 Kg2 Bd3 Rd1
00:05:43.2	0,48	15	234178226	Qe2 Rad8 Qc4 e6 Rcd1 Nc6 Qc3 Rxd1 Rxd1 h6 Bxc6 bxc6
Nf3 Rd8 Rd4 f6 Rxd8+ Qxd8 Nd4
00:08:47.1	0,40	16	315689439	Qe2 Rad8 Qc4 e6 Rcd1 Nc6 Ne4 Bxe4 Bxe4 Rxd1 Rxd1
Rd8 Rxd8+ Qxd8 Qd3 Qf6 Qd2 a4 Bxc6 bxc6 bxa4
00:09:22.3	0,53	16	329764937	Qe5 Qxe5 fxe5 Nc6 Bd5 e6 Bxc6 bxc6 Rcd1 h6 Nf3 Rad8
Rd6 Be4 Kg2 Kg7 g4 Bd3
00:13:38.1	0,48	17	499514129	Qe5 Qxe5 fxe5 Nc6 Bd5 e6 Bxc6 bxc6 Rcd1 a4 b4 Rab8
Rf4 Red8 Rd6 h6 Ne4 Kg7 Kg2 Bxe4+ Rxe4
00:24:49.0	0,48	18	963936150	Qe5 Qxe5 fxe5 Nc6 Bd5 e6 Bxc6 bxc6 Rcd1 Reb8 Rd7 a4
g4 Rb4 gxf5 Rg4+ Kh1 Rxg5 fxe6 fxe6 b4 Rxe5
00:44:02.9	0,54	19	1789371263	Qe5 Qxe5 fxe5 Nc6 Bd5 e6 Bxc6 bxc6 Rcd1 Reb8 Rf4
h6 Ne4 Kg7 Nf6 Rb5 g4 Bc2 Rd7 Rxc5 Rxf7+ Kxf7 Ne4+ Ke7 Nxc5
01:27:54.7	0,88	19	3588083598	g4 Bxg4 Bd5 Rf8 f5 gxf5 Rc4 h5 Rxg4 hxg4 Rxf5
Qxc5+ Kg2 e5 Qxe5 Qc2+ Rf2 Nc6 Qf6 Qb1 Nxf7 Rfc8 Ne5+ Kh7 Qh4+ Kg7 Bxc6 bxc6
Nxg4
02:06:17.9	0,89	20	880856848	g4 Bxg4 Bd5 e6 Ne4 h5 Nf6+ Kf8 Nxe8 Rxe8 Qh8+ Ke7
Qg7 Bf5 Bg2 Rd8 Kh1 Nc6 Rce1 Rd2 a3 Nd4 b4 Ne2

Pro Deo 1.1 Default also does not find it within 2 hours, after it marginally
rejects the move in favor of Bd5 by .02 point at ply thirteen

  r3r1k1/npq1pp1p/6p1/p1P2bN1/5P2/1P4P1/PQ4BP/2R2RK1 w - -

 00:00:00   1.00  -2.27  1.Ne6 Bxe6
 00:00:00   1.02  -1.16  1.Nxf7 Kxf7
 00:00:00   1.04  0.05  1.Bxb7 Qxb7
 00:00:00   1.07  1.27  1.c6 Qb6 2.Kh1 Nxc6
 00:00:00   1.13  2.37  1.a3
 00:00:00   1.17  2.74  1.Rfd1
 00:00:00   2.00  0.80  1.Rfd1 e5
 00:00:00   2.01  1.39  1.Rfe1 e5 2.Rxe5
 00:00:00   2.07  2.03  1.Bd5 e6
 00:00:00   3.00  1.96  1.Bd5 e6 2.Bg2
 00:00:00   4.00  1.32  1.Bd5 e6 2.Bc4 Qxc5 3.Kh1
 00:00:00   5.00  1.32  1.Bd5 e6 2.Bc4 Qxc5 3.Kh1
 00:00:00   6.00  1.30  1.Bd5 e6 2.Be4 e5 3.Bd5 Re7 4.fxe5 Rxe5
 00:00:00   7.00  0.65  1.Bd5 e6 2.Bg2 h6 3.Nf3 Rad8 4.Qf6
 00:00:00   7.02  0.70  1.Rfe1 h6 2.Nf3 Rad8 3.Nh4 Bd3 4.Be4 Bxe4
 00:00:01   8.00  0.65  1.Rfe1 h6 2.Nf3 Rad8 3.Nh4 Bd3 4.Be4 Bxe4 5.Rxe4
                        Nb5
 00:00:01   8.01  0.76  1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 f5 4.Bg2 e5 5.Bd5
                        Kf8
 00:00:01   8.14  0.76  1.g4
 00:00:02   8.14  0.97  1.g4 Bxg4 2.h3 Bf5 3.Bd5 e6
 00:00:02   9.00  0.38  1.g4 Bxg4 2.Qe5 Qxe5 3.fxe5 Nc6 4.Bxc6 bxc6
                        5.Rxf7 h6 6.Rf4 Bf5
 00:00:02   9.01  0.82  1.Bd5 e6 2.Ne4 Bxe4 3.Bxe4 Rad8 4.Qf6 Rd2
 00:00:04  10.00  0.57  1.Bd5 e6 2.Bg2 h6 3.Ne4 Bxe4 4.Bxe4 f5 5.Bg2
                        e5 6.Bd5 Kh7
 00:00:05  10.02  0.66  1.Rfe1 h6 2.Nf3 Rad8 3.Nh4 Bd3 4.Be4 Bxe4 5.Rxe4
                        Nb5 6.f5
 00:00:13  11.00  0.61  1.Rfe1 Red8 2.a3 h6 3.Nf3 Rd3 4.Nh4 Rad8 5.Nxf5
                        gxf5 6.a4
 00:00:15  11.03  0.62  1.g4 Bxg4 2.Bd5 Rf8 3.h3
 00:00:27  12.00  0.61  1.g4 Bxg4 2.Bd5 Rf8 3.Qg2 Qd7 4.Bxb7 Rad8 5.Rf2
                        h6 6.h3
 00:01:00  13.00  0.54  1.g4 Bxg4 2.Bd5 Rf8 3.Qg2 Qd7 4.Bxb7 Rab8 5.Bf3
                        Bxf3
 00:01:26  13.02  0.55  1.Bd5 e6 2.Bg2 Rad8 3.Qf6 h6 4.Ne4
 00:03:05  14.00  0.48  1.Bd5 e6 2.Bf3 Rad8 3.Qf6 h6 4.Ne4 Bxe4
 00:11:02  15.00  0.44  1.Bd5 e6 2.Bf3 Rad8
 00:31:42  16.00  0.54  1.Bd5 e6 2.Bg2 Rad8
 01:20:21  17.00  0.34  1.Bd5 e6
 02:15:10  17.02  0.41  1.Rfe1 Red8 2.Qc3 h6 3.Nf3 Nc6

Pro Deo 1.1 Vulcan {9k17pr} was a bit more successful, twelve ply was enough for
1.g4 to be held after Bd5 made a short appearance as well. Not sure why Pro Deo
default rejects the g4-line though, might be worth investigating further.

Pro Deo 1.1 Vulcan {9k17pr}

00:00:00.2	1,43	2	1139		Rfe1 e5 Rxe5
00:00:00.2	2,34	2	1435		Bd5 e6
00:00:00.2	2,25	3	2793		Bd5 e6 Bg2
00:00:00.2	1,68	4	7554		Bd5 e6 Bc4 Qxc5+ Kh1
00:00:00.2	1,68	5	24333		Bd5 e6 Bc4 Qxc5+ Kh1
00:00:00.3	1,33	6	72893		Bd5 e6 Be4 e5 Bxf5 gxf5 fxe5 Rxe5 Rcd1
00:00:00.3	1,40	6	104598		g4 Bxg4 h3 Bf5 Bd5 e6
00:00:00.5	1,30	7	285346		g4 Bxg4 h3 Bf5 Bd5 e6 Bg2
00:00:01.2	0,79	8	895279		g4 Bxg4 Bd5 e6 Bg2 e5 Bd5 Re7 fxe5
00:00:01.2	0,84	8	933720		Rfd1 h6 Ne4 Rad8 Rxd8 Rxd8 a4
00:00:01.3	1,25	8	983214		Bd5 e6 Bg2 e5 fxe5 Qd8 Ne4
00:00:02.1	0,89	9	1705499		Bd5 e6 Ne4 Bxe4 Bxe4 f5 Bf3 e5 Rfd1
00:00:05.8	0,92	10	5464073		Bd5 e6 Ne4 Bxe4 Bxe4 f5 Bg2 Rad8 Qf6 e5 fxe5 Rxe5
00:00:06.1	0,92	10	5762477		g4
00:00:06.6	1,17	10	6270731		g4 Bxg4 Bd5 e6 Ne4 exd5 Nf6+ Kf8 Nxe8
00:00:12.8	0,67	11	12677573	g4 Bxg4 Bd5 Rf8 Qg2 Qd7 Bxb7 Rad8 Rf2 Nb5
00:00:15.1	0,92	11	14913854	Bd5 e6 Ne4 Bxe4 Bxe4 f5 Bg2 Rad8 Qf6 e5 fxe5 Rxe5
00:00:25.7	0,65	12	26041851	Bd5 e6 Bg2 h6 Ne4 Bxe4 Bxe4 Rad8 Qf6 Rd2 Rf2 Red8
Rxd2 Rxd2
00:00:31.5	0,82	12	32123128	g4 Bxg4 Bd5 Rf8 Qg2 Qd7 h3 Rad8 Nxf7 Qxd5 Nxd8 Qxg2+
00:01:12.7	0,73	13	75341437	g4 Bxg4 Bd5 Rf8 Qd4 Nb5 Qb2 Rfe8 Nxf7 Rac8 Nh6+ Kf8
Nxg4 Qxf4
00:02:54.7	0,73	14	187181067	g4 Bxg4 Bd5 Rf8 Qg2 Qd7 Bxb7 Rab8 Be4 Qd4+
00:07:26.8	0,83	15	494574424	g4 Bxg4 Bd5 Rf8 Rc4 h6 Nxf7 e5

 Eelco




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