Time to give GCP a hand

[Dann Corbit]

Deep Sjeng has {possibly} passed Shredder in strength on 4 CPUs at 40/40:
http://www.computerchess.org.uk/ccrl/4040/

Currently ranked 4th overall behind Rybka, Naum, and Zappa:

Code: Select all

1 Rybka 3 64-bit 4CPU 3220
2 Naum 3.1 64-bit 4CPU 3075
3 Zappa Mexico II 64-bit 4CPU 3071
4 Deep Sjeng WC2008 64-bit 4CPU 3035

A few years ago, Shredder was the unassailable wall, so I think this is a remarkable accomplishment.

[kgburcham]

Dan, Deep Sjeng is one of my favorite programs for test positions. I use it often.

Brilliant Position # 7 Bg6
[d] 4K3/pp5p/r6P/k1P4P/P3B3/8/8/8 w - - 0 1

Deep Sjeng 3.0:

1.Bg6 Rf6 2.Ke7 Rc6 3.Kf7 Kxa4 4.Kg7 Rc7+ 5.Kg8 Kb5 6.Bxh7 Rc8+ 7.Kg7 Rc7+ 8.Kg6 Rc8 9.Kf6 Kxc5 10.Bg6 a5 11.Kg7
= (0.08) Depth: 21/47 00:00:24 109mN
1.Bg6 Rf6 2.Ke7 Rc6 3.Kf7 Kxa4 4.Kg7 Rc7+ 5.Kg8 Kb4 6.Bxh7 Rc8+ 7.Kg7 Rc7+ 8.Kg6 Rc8 9.Kf6 Kxc5 10.Bg6 a5 11.Kg7
+/= (0.43) Depth: 22/49 00:00:48 247mN
1.Bg6 Rf6 2.Ke7 Rc6 3.Kf7 Kxa4 4.Kg7 Rc7+ 5.Kg8 Kb4 6.Bxh7 Rc8+ 7.Kg7 Rc7+ 8.Kg6 Rc8 9.Kf6 Kxc5 10.Bg6 a5 11.Kg7
+/= (0.28) Depth: 23/50 00:00:55 303mN
1.Bg6 Rf6 2.Ke7 Rc6 3.Kf7 Kxa4 4.Kg7 Rc7+ 5.Kg8 Kb4 6.Bxh7 Rc8+ 7.Kg7 Rc7+ 8.Kg6 Rc8 9.Kf6 Kxc5 10.Bg6 a5 11.Kg7
+/= (0.48) Depth: 24/55 00:02:54 853mN
1.Bg6 Rf6 2.Ke7 Rc6 3.Kf7 Kxa4 4.Kg7 Rc7+ 5.Kg8 Kb4 6.Bxh7 Rc8+ 7.Kg7 Rc7+ 8.Kg6 Rc8 9.Kf6 Kxc5 10.Bg6 a5 11.Kg7
+/= (0.50) Depth: 24/55 00:03:26 956mN

[AdminX]

What hardware were you using for that result? That answer came pretty quick. Octal or Quad maybe?

[AdminX]

Never Mind, I think I know what happened. However my evals are much higher than the ones that you show.

Analysis by Deep Sjeng 3.0:

1.Bxb7 Rxh6 2.c6 Rxh5 3.c7 Rc5 4.c8Q Rxc8+ 5.Bxc8 Kxa4 6.Kd7 Kb5 7.Bb7
+/= (0.51) Depth: 6/12 00:00:00 19kN
= (0.00) Depth: 11/18 00:00:00 201kN

1.c6 Rxc6 2.Bxc6 bxc6 3.Kf7 c5 4.Kg7 c4 5.Kxh7 c3 6.Kg6 c2 7.h7 c1Q 8.h8Q Qc2+ 9.Kg5 Qg2+ 10.Kf4 Qd2+ 11.Ke4 Qe2+ 12.Kf4 Qd2+
+/= (0.40 !) Depth: 11/25 00:00:00 215kN
= (0.18) Depth: 16/39 00:00:00 3757kN

1.Bg6 Rf6 2.Ke7 Rc6 3.Kf7 Kxa4 4.Kg7 Rc7+ 5.Kg8 Kb5 6.Bxh7 Rc8+ 7.Kg7 Rc7+ 8.Kg6 Rc8 9.Kf6 Rc6+ 10.Kg5 Kxc5 11.Bg8
+/- (1.00 !) Depth: 16/39 00:00:00 5101kN
+/- (1.30) Depth: 25/50 00:01:38 643mN

[kgburcham]

Ted
Maybe same as yours. Q6600 4 gigs ram, stock clock. inside chessbase.
This thing is so slow, such a pancy----all I have to do is just whisper SkullTrail and mine instantly goes to the blue screen of death.
kgbucham

[d] 4K3/pp5p/r6P/k1P4P/P3B3/8/8/8 w - - 0 1

Deep Sjeng 3.0:

1.Bg6
+/= (0.50) Depth: 21/46 00:00:20 116mN
1.Bg6 Rc6 2.Kf7 Kxa4 3.Kg7 Rc7+ 4.Kg8 Kb4 5.Bxh7 Rc8+ 6.Kg7 Rc7+ 7.Kg6 Rc8 8.Kf6 Rc6+ 9.Kg5 Kxc5 10.Bg8
+/= (0.55) Depth: 21/46 00:00:35 198mN
1.Bg6 Rc6 2.Kf7 Kxa4 3.Kg7 Rc7+ 4.Kg8 Kb4 5.Bxh7 Rc8+ 6.Kg7 Rc7+ 7.Kg6 Rc8 8.Kf6 Rc6+ 9.Kg5 Kxc5 10.Bg8
+/= (0.50) Depth: 22/46 00:00:45 257mN
1.Bg6
+/- (0.90) Depth: 23/51 00:01:07 381mN
1.Bg6 Rc6 2.Kf7 Kxa4 3.Kg7 Rc7+ 4.Kg8 Kb4 5.Bxh7 Rc8+ 6.Kg7 Rc7+ 7.Kg6 Rc8 8.Kf6 Rc6+ 9.Kg5 Kxc5 10.Bg8
+/= (0.61) Depth: 23/51 00:01:12 404mN
1.Bg6 Rc6 2.Kf7 Kxa4 3.Kg7 Rc7+ 4.Kg8 Kb4 5.Bxh7 Rc8+ 6.Kg7 Rc7+ 7.Kg6 Rc8 8.Kf6 Rc6+ 9.Kg5 Kxc5 10.Bg8
+/- (0.80) Depth: 24/51 00:01:31 513mN
1.Bg6
+/- (1.20) Depth: 25/55 00:02:59 999mN