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Subject: Re: Another test position

Author: Ingo Bauer

Date: 11:10:34 12/02/02

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Hi

>How long do your engines need to find Nc6! with a huge white advantage (at least
>+2)?
[D] kb2r1qr/pp3b2/1p2p3/1Pn1pp1n/R2N2pP/1PN1BPP1/4PQB1/R4K2 w - - 0 1

All on a A@1920MHz, 384MB Hash

Engine: Ruffian 1.0.1
by Perola Valfridsson
  8.00	 0:01 	-1.99++	1.Nc6 (858.287) 809.7
  8.01	 0:01 	-1.29 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Kb8 5.Nd7+ Kc8
6.Bxa7 Kd8 (1.464.069) 817.9
  9.01	 0:04 	-0.94++	1.Nc6 (3.657.304) 856.5
  9.01	 0:07 	+0.18 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bd6 4.Nxb6+ Kb8 5.Bc5 Bf8
6.Nd7+ Kc8 7.Bxf8 Rxf8 8.Qxa7 Nxg3+ (6.397.174) 863.3
 10.01	 0:12 	+0.17 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Bb6 Kb8 8.c7+ Kc8 9.Ra8+ Kd7 10.Rd8+ (11.258.853) 869.4
 11.01	 0:30 	+0.52++	1.Nc6 (26.089.497) 867.6
 11.01	 0:56 	+1.23 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Kf2 Ne4+ 9.fxe4 Rxh4 (50.540.952) 890.9
 12.01	 1:56 	+1.58++	1.Nc6 (103.772.407) 891.9
 12.01	 3:50 	+1.66 	1.Nc6 bxc6 2.Bxc5 gxf3 3.Bxf3 Kb7 4.bxc6+ Kc8 5.Bxh5 Bxh5
6.Bxb6 axb6 7.Qxb6 Qg7 8.Ra8 Qc7 (222.365.457) 963.4
 13.01	 5:49 	+2.01++	1.Nc6 (318.931.496) 912.8
best move: Nd4-c6 time: 6:10.683 min  n/s: 908.125  CPU 94.0%  nodes:
336.633.179

Engine: Shredder Paderborn
by Stefan Meyer-Kahlen
  8.01	 0:01 	-0.81 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bd6 4.Nxb6+ Kb8 5.Nc4 Bc7
6.Rxa7 gxf3 7.Bxf3 Nxg3+ 8.Ke1 (439.889) 311.5
  9.01	 0:02 	-0.56++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bd6 4.Nxb6+ Kb8 5.Nd7+ Kc8
6.Rxa7 e4 7.Nb6+ Kd8 8.Bg5+ Qxg5 9.hxg5 gxf3 (693.085) 320.4
  9.01	 0:02 	-0.06++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bd6 4.Nxb6+ Kb8 5.Nd7+ Kc8
6.Rxa7 Re7 7.Ra8+ Kc7 (857.542) 326.8
  9.01	 0:03 	+0.19 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Kf2 Nxe2 9.Kxe2 gxf3+ 10.Bxf3 Rxh4 (1.165.379) 340.2
 10.01	 0:05 	+0.44++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Ke1 Rxh4 9.Qb8+ (2.073.490) 345.6
 10.01	 0:07 	+0.94++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Ke1 Ne4 9.fxe4 Rxh4 10.exf5 exf5 (2.604.075) 346.2
 10.01	 0:07 	+0.95 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Ke1 Ne4 9.fxe4 Rxh4 10.exf5 exf5 (2.780.357) 351.4
 11.01	 0:11 	+1.20++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Ke1 Ne4 9.fxe4 Rxh4 10.exf5 exf5 (4.200.645) 351.6
 11.01	 0:19 	+1.70++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Ke1 Nf1 9.Bxf1 (6.705.612) 350.5
 11.01	 0:19 	+1.70 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Ke1 Nf1 9.Bxf1 Rxh4 (6.986.243) 352.8
 12.01	 0:43 	+1.95++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Ke1 Rxh4 9.Qb8+ (15.422.332) 354.4
 12.01	 1:41 	+2.43 	1.Nc6 bxc6 2.fxg4 e4 3.Bxc5 Nxg3+ 4.Qxg3 fxg4 5.Bd6 Bg6
6.Nxe4 Qg7 (35.319.042) 346.7
best move: Nd4-c6 time: 1:48.185 min  n/s: 348.803  CPU 96.9%  nodes: 37.735.293

Shredder was good but my favorit Shredder setting is better:

Engine: Gambit Shredder PB
by Stefan Meyer-Kahlen
Position:  0 1
  8.01	 0:01 	-0.88++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Nf4 4.gxf4 exf4 5.Bxb6 e5
(290.929) 287.4
  8.01	 0:01 	-0.14 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Kb8 5.Nd7+ Kc8
6.Rxa7 gxf3 7.Qxf3 (447.286) 297.5
  9.01	 0:02 	+0.02 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bd6 4.Nxb6+ Kb8 5.Nc4 Bc7
6.Bxa7+ Kc8 7.Rd1 gxf3 8.exf3 Nxg3+ 9.Kg1 (638.511) 300.7
 10.01	 0:03 	+0.27++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bd6 4.Nxb6+ Kb8 5.Nd7+ Kc8
6.Rxa7 e4 7.Nb6+ Kd8 8.f4 Nxf4 9.gxf4 (1.025.929) 316.1
 10.01	 0:04 	+0.77++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bd6 4.Nxb6+ Kb8 5.Nd7+ Kc8
6.Rxa7 Re7 7.Nb6+ Kd8 8.Bg5 Qf8 9.Bxe7+ Qxe7 (1.408.886) 322.6
 10.01	 0:06 	+1.09 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 Nxg3+ 8.Ke1 Nxe2 9.Kxe2 (2.331.850) 334.0
 11.01	 0:10 	+1.34++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Kb8
6.Bxa7+ Kc8 7.Qb6 gxf3 8.Qb8+ (3.590.763) 338.8
 11.01	 0:17 	+1.82 	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6 Nxg3+
6.Qxg3 gxf3 7.Rxa7+ Kb8 8.Qxe5+ Kc8 9.Bxf3 (5.879.278) 332.2
 12.01	 0:38 	+2.07++	1.Nc6 Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Bxb6 5.Bxb6
Nxg3+ 6.Qxg3 Kb8 7.Qxe5+ Kc8 8.Rxa7 (12.874.471) 330.7
best move: Nd4-c6 time: 0:45.997 min  n/s: 336.125  CPU 95.1%  nodes: 15.460.758

Bye Ingo

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