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Subject: Shredder 8 UCI or Shredder 8 CB-native?

Author: Drexel,Michael

Date: 14:51:49 01/13/04


[D] 3k2r1/r3p2R/4P1b1/2PP1p2/p5p1/8/1B6/4R1K1 w - - 0 1

Both engines installed in the same Fritz GUI (64MB hash). Hastables were not
only cleared before the tests. I also loaded some different engines "inbetween".
And here is the result:

UCI: 3 seconds to find Rxe7
CB-native: 100 seconds to find Rxe7

Analysis by Shredder 8 uci:

1.c6 Bxh7
  -+  (-6.18)   Depth: 1/2   00:00:00
1.c6 Bxh7
  -+  (-8.03)   Depth: 1/2   00:00:00
1.c6 Bxh7
  -+  (-7.06)   Depth: 1/2   00:00:00
1.Kf2 Bxh7
  -+  (-7.03)   Depth: 1/2   00:00:00
1.Kf2 Bxh7
  -+  (-7.03)   Depth: 1/2   00:00:00
1.Be5 f4
  µ  (-1.06)   Depth: 1/2   00:00:00
1.Be5 f4
  µ  (-1.06)   Depth: 1/2   00:00:00
1.Rxe7 Rxe7
  +-  (2.17)   Depth: 1/2   00:00:00
1.Rxe7 Rxe7
  +-  (2.17)   Depth: 1/2   00:00:00
1.Rxe7 Rxe7
  -+  (-5.20)   Depth: 2/2   00:00:00
1.Rxe7 Kxe7
  -+  (-4.75)   Depth: 2/2   00:00:00
1.Be5 f4
  µ  (-1.06)   Depth: 2/2   00:00:00
1.Be5 f4
  µ  (-1.06)   Depth: 2/2   00:00:00
1.Be5 f4
  µ  (-1.06)   Depth: 3/3   00:00:00
1.Be5 f4
  µ  (-1.06)   Depth: 4/4   00:00:00
1.Be5 f4
  µ  (-1.06)   Depth: 5/5   00:00:00
1.Be5 f4
  µ  (-1.06)   Depth: 6/6   00:00:00  1kN
1.Be5 f4
  µ  (-1.06)   Depth: 7/7   00:00:00  4kN
1.Be5 f4
  µ  (-1.06)   Depth: 8/8   00:00:00  7kN
1.Be5 f4
  µ  (-1.06)   Depth: 9/9   00:00:00  15kN
1.Be5 f4
  µ  (-1.06)   Depth: 10/10   00:00:01  16kN
1.Be5 f4
  µ  (-1.06)   Depth: 11/11   00:00:01  31kN
1.Be5 f4
  µ  (-1.06)   Depth: 12/12   00:00:02  70kN
1.Be5 f4 2.Bb2
  µ  (-1.06)   Depth: 13/13   00:00:02  168kN
1.Be5 f4 2.Bb2
  µ  (-1.06)   Depth: 14/14   00:00:03  278kN
1.Rxe7 Rxe7 2.Bf6 Ke8 3.Bxe7 Kxe7 4.d6+ Kd8 5.c6 Kc8 6.d7+ Kc7 7.e7 Re8 8.dxe8Q
  µ  (-1.05)   Depth: 14/28   00:00:03  599kN
1.Rxe7 Kxe7 2.d6+ Kd8 3.Bf6+ Kc8 4.c6 Be8 5.d7+ Bxd7 6.exd7+ Rxd7 7.cxd7+ Kxd7
8.Re7+ Kc6 9.Re6+ Kc5 10.Re5+ Kd6 11.Rxf5 Ra8
  µ  (-0.85)   Depth: 14/34   00:00:03  878kN
1.Rxe7 Kxe7 2.d6+ Kd8 3.Bf6+ Kc8 4.c6 Be8 5.Rc1 Bxc6 6.Rxc6+ Kb8 7.d7 Kb7 8.e7
Raa8 9.Re6 Raf8 10.exf8Q
  ³  (-0.60)   Depth: 15/34   00:00:04  1190kN
1.Rxe7 Kxe7 2.d6+ Kd8 3.Bf6+ Kc8 4.c6 Be8 5.Rc1 Bxc6 6.Rxc6+ Kb8 7.d7 Kb7 8.e7
Raa8 9.Re6 Raf8 10.exf8Q
  =  (-0.10)   Depth: 15/34   00:00:04  1320kN
1.Rxe7 Kxe7 2.d6+ Kd8 3.Bf6+ Kc8 4.c6 Be8 5.Rc1 Ra8 6.d7+ Kc7 7.Be5+ Kb6 8.c7
Bxd7 9.exd7 Kb7 10.Rd1
  =  (0.09)   Depth: 15/34   00:00:05  1591kN
1.Rxe7 Kxe7 2.d6+ Kd8 3.Bf6+ Kc8 4.c6 Be8 5.Rc1 Ra8 6.d7+ Kc7 7.Be5+ Kb6 8.c7
Bxd7 9.exd7 Kb7 10.Rd1 Rad8 11.cxd8Q
  ²  (0.34)   Depth: 16/34   00:00:07  2455kN
1.Rxe7 Kxe7 2.d6+ Kd8 3.Bf6+ Kc8 4.c6 Be8 5.Rc1 Ra8 6.d7+ Kc7 7.Be5+ Kb6 8.c7
Bxd7 9.exd7 Kb7 10.Rd1 Rgc8
  ±  (0.84)   Depth: 16/34   00:00:08  2759kN
1.Rxe7 Kxe7 2.d6+ Kd8 3.Bf6+ Kc8 4.c6 Ra8 5.d7+ Kc7 6.e7 a3 7.Rd1 f4 8.d8Q+
Raxd8 9.exd8B+ Kxc6 10.Rd6+ Kxd6 11.Bc7+ Kxc7 12.Bd8+ Rxd8
  ±  (0.84)   Depth: 16/38   00:00:12  3805kN
1.Rxe7 Kxe7 2.d6+ Kd8 3.Bf6+ Kc8 4.c6 Rf7 5.exf7 Bxf7 6.d7+ Kc7 7.Re7 f4 8.Rxf7
  ±  (1.09)   Depth: 17/38   00:00:21  5742kN
1.Rxe7 Rxe7 2.Bf6 f4 3.d6 Rge8 4.c6 Kc8 5.Bxe7 Rxe7 6.dxe7 Kc7 7.Ra1 a3 8.Rxa3
Kb6 9.e8Q
  +-  (1.43)   Depth: 17/38   00:00:29  8656kN
1.Rxe7 Rxe7 2.Bf6 f4 3.d6 Rge8 4.c6 Kc8 5.Bxe7 Rxe7 6.dxe7 Kc7 7.Ra1 a3 8.Rxa3
Be8 9.Ra7+ Kxc6
  +-  (1.68)   Depth: 18/38   00:00:40  12350kN
1.Rxe7 Rxe7 2.Bf6 f4 3.d6 Rge8 4.c6 Kc8 5.Bxe7 Rxe7 6.dxe7 Be8 7.Rd1 Bxc6 8.Rd8+
Kc7
  +-  (1.78)   Depth: 18/38   00:00:44  13569kN
1.Rxe7 Rxe7 2.Bf6 f4 3.d6 Rge8 4.c6 Kc8 5.Bxe7 Rxe7 6.dxe7 Kc7 7.Ra1 Kxc6 8.Rc1+
Kb5 9.Rc5+ Kxc5 10.e8Q Bxe8 11.e7
  +-  (1.53)   Depth: 19/38   00:00:51  15995kN

Analysis by Shredder 8:

1.c6 Bxh7
  -+  (-6.18)   Depth: 1/2   00:00:00
1.c6 Bxh7
  -+  (-8.03)   Depth: 1/2   00:00:00
1.c6 Bxh7
  -+  (-7.06)   Depth: 1/2   00:00:00
1.Kf2 Bxh7
  -+  (-7.03)   Depth: 1/2   00:00:00
1.Kf2 Bxh7
  -+  (-7.03)   Depth: 1/2   00:00:00
1.Rf7 Bxf7 2.exf7
  -+  (-2.78)   Depth: 1/3   00:00:00
1.Rf7 Bxf7 2.exf7
  -+  (-2.78)   Depth: 1/3   00:00:00
1.Rg7 Rxg7 2.Bxg7
  -+  (-1.59)   Depth: 1/4   00:00:00
1.Rg7 Rxg7 2.Bxg7
  -+  (-1.50)   Depth: 1/4   00:00:00
1.Rg7 Rxg7 2.Bxg7
  -+  (-1.50)   Depth: 2/4   00:00:00
1.Rg7 Rxg7 2.Bxg7 f4
  -+  (-2.08)   Depth: 3/5   00:00:00
1.Rg7 Rxg7 2.Bxg7 f4
  -+  (-2.08)   Depth: 3/5   00:00:00
1.Rh4 a3 2.Be5
  -+  (-2.02)   Depth: 3/7   00:00:00
1.Rh4 a3 2.Be5
  -+  (-2.02)   Depth: 3/7   00:00:00
1.Rh4 a3 2.Be5 Rf8
  -+  (-1.97)   Depth: 4/6   00:00:00
1.Rh4 Rc7 2.Rc1 Rb7 3.Bd4
  -+  (-1.72)   Depth: 5/7   00:00:00
1.Rh4 a3 2.Be5 Ra8 3.c6
  -+  (-1.70)   Depth: 5/8   00:00:00
1.Rh4 a3 2.Be5 Rf8 3.Rc1 Ra8
  -+  (-1.73)   Depth: 6/10   00:00:00
1.Rg7 Rxg7 2.Bxg7 a3 3.Rc1
  -+  (-1.72)   Depth: 6/10   00:00:00
1.Rg7 Rxg7 2.Bxg7 a3 3.Rc1 f4 4.Be5
  -+  (-1.52)   Depth: 6/11   00:00:00
1.Rg7 Rxg7 2.Bxg7 f4 3.Be5 f3 4.Rc1 Ra8
  -+  (-1.66)   Depth: 7/10   00:00:00  13kN
1.Rh4 a3 2.Be5 Rf8 3.Rc1 Kc8 4.c6
  -+  (-1.65)   Depth: 7/12   00:00:00  16kN
1.Rh4 a3 2.Be5 Rf8 3.Bg7 Re8 4.Kf2
  -+  (-1.63)   Depth: 7/12   00:00:00  17kN
1.Rh4 a3 2.Be5 a2 3.Rc1 Kc8 4.Kf2 Ra3
  -+  (-1.62)   Depth: 8/13   00:00:00  33kN
1.Rh4 a3 2.Be5 a2 3.Rc1 Kc8 4.Kf2 Rd8 5.Rh8 Rxh8 6.Bxh8
  -+  (-1.72)   Depth: 9/15   00:00:00  52kN
1.Rg7 Rxg7 2.Bxg7 f4 3.Be5 Kc8 4.Bxf4 a3
  -+  (-1.71)   Depth: 9/15   00:00:00  58kN
1.Rg7 Rxg7 2.Bxg7 f4 3.Be5 f3 4.Rc1 Ra8 5.Kf2 Be4
  -+  (-1.65)   Depth: 9/15   00:00:00  60kN
1.Rg7 Rxg7 2.Bxg7 f4 3.Be5 f3 4.Kf2 Kc8 5.Kg3 Bf5 6.Rc1
  -+  (-1.65)   Depth: 10/17   00:00:00  75kN
1.Rh4 a3 2.Be5 a2 3.Rc1 a1Q 4.Bxa1 f4
  -+  (-1.64)   Depth: 10/17   00:00:00  81kN
1.Rh4 a3 2.Be5 a2 3.Rc1 Kc8 4.Kf2 Ra3 5.c6 Rd8
  -+  (-1.63)   Depth: 10/17   00:00:00  89kN
1.Rh4 a3 2.Be5 a2 3.Kf2 Ra3 4.Reh1 Rf3+ 5.Kg2 Rd3 6.Rh8 Rd2+ 7.Kg3
  -+  (-1.62)   Depth: 11/23   00:00:00  165kN
1.Rh4 a3 2.Be5 Ra8 3.Rc1 Kc8 4.Kf2 Ra7 5.c6 Rd8
  µ  (-1.39)   Depth: 12/24   00:00:01  434kN
1.Be5 Bxh7 2.Rb1 Rc7 3.Rb8+ Rc8 4.c6 Rxb8 5.c7+ Kc8 6.cxb8Q#
  µ  (-1.38)   Depth: 12/26   00:00:02  627kN
1.Be5 f4 2.Rh2 Rf8 3.Rb2 Ra8 4.Rb7 Bd3 5.d6 g3 6.dxe7+ Kc8 7.exf8Q+ Kxb7 8.Bxf4
  µ  (-1.18)   Depth: 12/26   00:00:02  741kN
1.Be5 f4 2.Rh2 Ra5 3.Rb2 Rxc5 4.Rb8+ Rc8 5.Rxc8+ Kxc8 6.Rc1+ Kd8 7.Bc7+ Ke8
8.Bxf4 Kd8 9.d6 Be4
  µ  (-1.16)   Depth: 13/29   00:00:03  1038kN
1.Be5 f4 2.Rh2 Ra5 3.Rc1 f3 4.Rb2 Ra8 5.Rb7 Bf5 6.Rd7+ Ke8 7.Kf2 a3 8.c6 Rc8
  µ  (-1.06)   Depth: 14/34   00:00:05  1589kN
1.Be5 f4 2.Rh2 Ra5 3.Rc1 f3 4.Rb2 Ra8 5.c6 Rc8 6.c7+ Ke8 7.Rb8 Rxb8 8.cxb8Q#
  µ  (-0.81)   Depth: 15/32   00:00:07  2345kN
1.Be5 f4 2.Rh2 Ra5 3.Rc1 a3 4.Bxf4 Be4 5.Be5 Ra8 6.d6 Rf8 7.dxe7+ Kxe7
  µ  (-0.71)   Depth: 15/32   00:00:08  2828kN, tb=2
1.Be5 f4 2.Rh2 Ra5 3.Rc1 a3 4.Bxf4 Be4 5.Be5 a2 6.Rb2 Ra8 7.Rb4 Bb1 8.Rbxb1
axb1Q
  ³  (-0.70)   Depth: 16/33   00:00:11  4079kN, tb=5
1.Be5 f4 2.Rh2 a3 3.Bxf4 Ra4 4.Be5 Be4 5.Rf2 Bf3 6.Rb1 Ra8 7.c6 Bxd5 8.Rb8+ Rxb8
  ³  (-0.47)   Depth: 17/34   00:00:20  7187kN, tb=12
1.Be5 f4 2.Rh2 Rb7 3.Bxf4 Rb4 4.Be5 g3 5.Rb2 Rxb2 6.Bxb2 Bc2 7.c6 Bb3 8.Re5 Kc7
9.Rh5
  ³  (-0.34)   Depth: 18/36   00:00:44  15140kN, tb=13
1.Be5 f4 2.Rh2 a3 3.Bxf4 Bd3 4.Ra2 Rf8 5.Bc1 Bc4 6.Rxa3 Rxa3 7.Bxa3
  =  (-0.11)   Depth: 19/39   00:01:22  27704kN, tb=355
1.Rxe7 Kxe7 2.d6+ Kf8 3.c6 Bf7 4.d7 Ke7 5.Ba3+ Kf6 6.exf7 Rxd7 7.fxg8Q
  =  (-0.10)   Depth: 19/41   00:01:40  33675kN, tb=386
1.Rxe7 Kxe7 2.d6+ Kf8 3.c6 Bf7 4.d7 Ke7 5.Ba3+ Kf6 6.exf7 Kxf7 7.Re7+ Kf6 8.d8Q
Rxe7 9.Bxe7+ Kf7
  =  (0.25)   Depth: 19/41   00:01:44  35033kN, tb=426
1.Rxe7 Rxe7 2.Bf6 f4 3.d6 Rge8 4.c6 Kc8 5.Bxe7 Rxe7 6.dxe7 Kc7 7.Ra1 Kxc6 8.Rxa4
  ±  (1.38)   Depth: 19/50   00:04:04  83402kN, tb=2506
1.Rxe7 Rxe7 2.Bf6 f4 3.d6 Rge8 4.c6 Kc8 5.Bxe7 Rxe7 6.Rd1 Re8 7.d7+ Kb8 8.dxe8Q+
Kc7 9.Qxg6 f3 10.Qxg4 Kxc6
  +-  (1.63)   Depth: 20/41   00:04:37  94374kN, tb=2672

Michael



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