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Subject: S8 and S9

Author: Ingo Bauer

Date: 08:09:54 02/06/05

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>Maybe the position after Rg2 is a nice testposition.
>
>How long for your prog to see that white is lost:
>
>[D]8/4K3/p2p4/3k4/1p6/2p5/P5R1/8 b - -

Shredder 8 and Shredder 9 on the same hardware. Maybe someone is interested.

Engine: Shredder 8 (256 MB)
by Stefan Meyer-Kahlen

14/27  0:01   -0.01    50...Kc5 51.Ke6 d5 52.Ke5 Kc4
                       53.Rg4+ Kd3 54.Rd4+ Ke3 55.Kxd5 c2
                       56.Rc4 Kd2 57.Rd4+ Kc3 58.Rc4+ Kb2
                       59.Rxb4+ Kxa2 (1.081.023) 549

14/27  0:05   0.00++   50...a5 51.Kd7 a4 52.Rg3 Kc4 53.Kxd6 b3
                       54.Rg4+ Kb5 55.Rg5+ Kb4 56.Rg1 b2
                       57.Rc1 bxc1Q (2.339.992) 462

14/27  0:06   0.00     50...a5 51.Rg5+ Kd4 52.Kxd6 c2
                       53.Rc5 Kd3 54.Ke5 Kd2 55.Rd5+ Ke2
                       56.Rc5 Kd1 57.Rd5+ Ke1 58.Rc5 Kd1
                       59.Rd5+ Ke1 60.Rc5 Kd1 61.Rd5+ (3.014.253) 473

15/28  0:08   0.00     50...a5 51.Rg5+ Kd4 52.Kxd6 c2
                       53.Rc5 Kd3 54.Ke5 Kd2 55.Rd5+ Ke2
                       56.Rc5 Kd1 57.Rd5+ Ke1 58.Rc5 Kd1
                       59.Rd5+ Ke1 60.Rc5 Kd1 61.Rd5+ (3.617.412) 450

16/29  0:10   0.00     50...a5 51.Rg5+ Kd4 52.Kxd6 c2
                       53.Rc5 Kd3 54.Rd5+ Ke3 55.Rc5 Kd2
                       56.Rd5+ Ke2 57.Rc5 Kd2 58.Rd5+ Ke2
                       59.Rc5 Kd2 60.Rd5+ (4.241.432) 388

17/29  0:19   0.00     50...a5 51.Rg5+ Kd4 52.Kxd6 c2
                       53.Rc5 Kd3 54.Rd5+ Ke3 55.Rc5 Kd2
                       56.Rd5+ Ke2 57.Rc5 Kd2 58.Rd5+ Ke2
                       59.Rc5 Kd2 60.Rd5+ (5.958.206) 310

18/35  0:40   +0.25++  50...a5 51.Rg5+ Kc6 52.Kf6 a4 53.Rg4 Kc5
                       54.Kf5 b3 55.Rxa4 c2 56.Ra5+ Kb4
                       57.Rd5 c1Q 58.Rd4+ Ka3 59.Ra4+ Kxa4
                       60.axb3+ Kxb3 61.Ke4 (12.533.341) 306

18/35  1:04   +0.70    50...a5 51.Rg5+ Kc6 52.Rg1 a4 53.Rc1 Kb5
                       54.Ke6 Kc4 55.a3 b3 56.Rd1 (23.439.491) 365

19/35  1:38   +0.95++  50...a5 51.Rg5+ Kc6 52.Rg1 a4 53.Rc1 Kb5
                       54.Ke6 Kc4 55.a3 b3 56.Rd1 (42.456.071) 429

19/36  1:45   +0.95    50...a5 51.Rg5+ Kc6 52.Rg1 a4 53.Rc1 Kb5
                       54.a3 Kc4 55.axb4 a3 (45.560.999) 431

20/37  2:43   +1.10    50...a5 51.Rg5+ Kc6 52.Rg1 a4 53.Rb1 b3
                       54.axb3 c2 55.Kf6 (77.180.280) 472

21/43  4:53   +1.35++  50...a5 51.Rg5+ Kc6 52.Rg1 Kc5
                       53.Rc1 d5 54.Kd7 d4 55.Kc8 (159.535.980) 542

best move: a6-a5 time: 5:07.594 min  n/s: 555.388  CPU 65.7%   n/s(1CPU):
845.339  nodes: 170.834.184 TB: 1.348.830


Engine: Shredder 9 UCI (256 MB)
by Stefan Meyer-Kahlen

13/25  0:01   +0.75    50...Kc5 51.Kd7 d5 52.Rg5 (1.334.899) 798

14/25  0:01   +0.50--  50...Kc5 51.Kd7 (1.578.089) 795

14/25  0:02   0.00--   50...Kc5 51.Kd7 (1.588.513) 794

14/25  0:02   -0.03    50...Kc5 51.Ke6 d5 52.Ke5 Kc4
                       53.Rg4+ Kd3 54.Kxd5 c2 55.Rd4+ Kc3
                       56.Rc4+ Kd2 57.Rd4+ (1.661.893) 782

14/27  0:05   -0.02++  50...a5 (3.118.350) 612

14/29  0:06   -0.01    50...a5 51.Rg5+ Kc4 52.Rxa5 c2
                       53.Kxd6 b3 54.Rc5+ Kb4 55.axb3 (4.340.505) 635

15/31  0:08   -0.01    50...a5 51.Rg5+ Kc4 52.Rxa5 c2
                       53.Kxd6 b3 54.Rc5+ Kb4 55.axb3 (5.361.751) 644

16/31  0:11   0.00     50...a5 51.Rg5+ Kd4 52.Kxd6 (8.266.696) 696

17/33  0:14   0.00     50...a5 51.Rg5+ Kd4 52.Kxd6 a4
                       53.Rg4+ Kd3 54.Rg3+ Kd2 55.Kc5 c2
                       56.Rg2+ Kc3 57.Rxc2+ Kxc2 58.Kxb4 a3
                       59.Kxa3 Kc3 60.Ka4 Kc4 61.a3 Kc5
                       62.Kb3 (9.973.586) 676

18/37  0:30   +0.25++  50...a5 51.Rg5+ (22.891.058) 742

18/37  0:44   +0.75++  50...a5 51.Rg5+ (37.088.503) 828

18/37  1:12   +1.84    50...a5 51.Rg5+ Kc6 52.Rg4 d5 53.Kd8 Kb5 (62.842.612) 872

19/36  1:44   +2.07    50...a5 51.Rg5+ Kc6 52.Rg8 Kc5 (93.755.906) 896

20/37  2:35   +2.32++  50...a5 51.Rg5+ (140.408.953) 903

20/38  3:39   +2.80    50...a5 51.Rg5+ Kc6 52.Rg8 Kc5
                       53.Ra8 Kd4 54.Ra6 c2 55.Rc6 Kd3
                       56.Rxd6+ (202.814.265) 924

best move: a6-a5 time: 5:01.062 min  n/s: 921.916  CPU 92.2%   n/s(1CPU):
999.908  nodes: 277.525.434 TB: 321.284

Bye
Ingo



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