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Subject: Some analysis of Shredder5.32 of Junior-Shredder

Author: Uri Blass

Date: 22:18:31 08/22/01


This analysis was done on a slow p200(128 Mbytes hash) and Shredder5.32 had no
problem to avoid Rd8 in less than an hour.

Shredder5.32 needed 8 minutes and 38 seconds to see the fail low at depth 10

Deep Junior 7 - Shredder
1r5k/7p/5PP1/1q6/p2p1N1K/2b1pBP1/8/3Q4 b - - 0 1

Analysis by Shredder 5.32:

64...d3 65.Qxd3 Bxf6+ 66.Kg4 Qxd3 67.Nxd3
  -+  (-6.75)   Depth: 1/2   00:00:00
64...d3 65.Qxd3 Bxf6+ 66.Kg4 Qxd3 67.Nxd3
  -+  (-6.75)   Depth: 2/4   00:00:00
64...d3 65.g7+ Kg8 66.Bd5+ Qxd5 67.Nxd5
  ยต  (-1.33)   Depth: 3/6   00:00:00
64...d3 65.g7+ Kg8 66.Bd5+ Qxd5 67.Nxd5
  +-  (2.06)   Depth: 3/6   00:00:00
64...d3 65.g7+ Kg8 66.Bd5+ Qxd5 67.Nxd5
  +-  (2.45)   Depth: 3/6   00:00:00
64...hxg6 65.Nxg6+
  -+  (-3.90)   Depth: 3/6   00:00:00
64...hxg6 65.Nxg6+
  -+  (-3.90)   Depth: 3/6   00:00:00
64...e2 65.gxh7 exd1Q
  -+  (-3.91)   Depth: 3/6   00:00:00
64...e2 65.gxh7 exd1Q
  -+  (-4.26)   Depth: 3/6   00:00:00
64...e2 65.g7+ Kg8 66.Qxe2
  -+  (-4.30)   Depth: 3/6   00:00:00
64...Rd8 65.g7+ Kg8 66.f7+ Kxf7 67.g8Q+ Rxg8 68.Qb3+ axb3
  -+  (-4.31)   Depth: 3/6   00:00:00
64...Rd8 65.Nd5 Rxd5 66.gxh7
  -+  (-4.66)   Depth: 3/6   00:00:00
64...Rd8 65.Ne6 Rd7
  -+  (-5.62)   Depth: 3/6   00:00:00
64...Rd8 65.Bd5 Rd7 66.gxh7 Rxd5 67.Nxd5
  -+  (-5.37)   Depth: 4/8   00:00:00
64...Rd8 65.Bd5 Rxd5 66.Nxd5 Qxd5 67.gxh7
  -+  (-5.36)   Depth: 4/8   00:00:00
64...Rd8 65.Ne6 hxg6 66.Nxd8 Qh5+ 67.Bxh5
  -+  (-5.11)   Depth: 5/10   00:00:00
64...Rd8 65.Ne6 Kg8 66.gxh7+ Kf7
  -+  (-4.61)   Depth: 5/10   00:00:00
64...Rd8 65.Ne6 d3 66.g7+ Kg8 67.f7+ Kxf7 68.Nxd8+ Kxg7 69.Ne6+ Kf6
  -+  (-3.50)   Depth: 5/10   00:00:00
64...hxg6 65.Nxg6+
  -+  (-3.90)   Depth: 5/10   00:00:01
64...hxg6 65.Nxg6+ Kh7 66.Nf8+ Rxf8 67.Qc2+ Kh6 68.Qg6+ Kxg6 69.Be4+ Kxf6
  -+  (-4.25)   Depth: 5/10   00:00:01
64...hxg6 65.Nxg6+ Kh7 66.Nf4 d3 67.Be4+ Kh8 68.Qxd3 Bxf6+ 69.Kg4 Qxd3 70.Bxd3
  -+  (-5.58)   Depth: 5/10   00:00:02
64...hxg6 65.Nxg6+ Kh7 66.Qc2 Kh6 67.Nf4 Re8 68.Bd5
  -+  (-5.33)   Depth: 6/12   00:00:02  74kN
64...hxg6 65.Nxg6+ Kh7 66.Qc2 Kh6 67.Nf4 Rg8 68.Kh3
  -+  (-5.02)   Depth: 6/12   00:00:03  94kN
64...hxg6 65.Nxg6+ Kh7 66.Ne7 Kh6 67.Bd5 Bd2 68.Qg4
  -+  (-4.77)   Depth: 7/14   00:00:06  170kN
64...hxg6 65.Nxg6+ Kh7 66.Ne7 d3 67.Be4+ Kh6 68.Nf5+ Qxf5 69.Bxf5 e2 70.Qc1+ d2
71.Qh1 Bxf6+ 72.Kg4+ Kg7
  -+  (-4.64)   Depth: 7/14   00:00:08  230kN
64...hxg6 65.Nxg6+ Kh7 66.Nf4 d3 67.Be4+ Kh6 68.Bxd3 Bxf6+ 69.Kh3 Qd7+ 70.Kg2
Kg7
  -+  (-4.56)   Depth: 8/16   00:00:23  668kN
64...hxg6 65.Nxg6+ Kh7 66.Be4 Kh6 67.Qg4 d3 68.Qf4+ Kh7 69.f7 e2 70.f8Q Qg5+
71.Kxg5 Rb5+ 72.Bd5 Rxd5+ 73.Kh4 Bf6+ 74.Q8xf6
  -+  (-4.31)   Depth: 9/18   00:01:00  1280kN
64...hxg6 65.Nxg6+ Kh7 66.Be4 Kh6 67.Qg4 d3 68.Qf4+ Kh7 69.f7 e2 70.f8Q Qg5+
71.Kxg5 Rb5+ 72.Bd5 Rxd5+ 73.Kh4 Bf6+ 74.Q8xf6
  -+  (-3.81)   Depth: 9/18   00:01:16  1742kN
64...hxg6 65.Nxg6+ Kg8 66.Bd5+ Qxd5 67.Ne7+ Kf7 68.Nxd5 Ke6 69.Nxc3 dxc3 70.Qd4
Rb3 71.Qxe3+ Kxf6
  +-  (3.99)   Depth: 9/18   00:03:47  7169kN
64...Rd8 65.Ne6 hxg6 66.Nxd8
  +-  (3.98)   Depth: 9/18   00:04:00  7654kN
64...Rd8 65.Ne6 hxg6 66.Nxd8 Kg8 67.Kg4 e2 68.f7+ Kf8 69.Kf4 exd1Q
  +-  (3.63)   Depth: 9/18   00:04:05  7870kN
64...Rd8 65.Ne6 hxg6 66.Nxd8 d3 67.Nf7+ Kg8 68.Nh6+ Kh7 69.f7 Bb4 70.Qc1 e2
71.Qe3 a3 72.f8Q Bxf8
  -+  (-3.74)   Depth: 9/18   00:05:59  11100kN
64...Rd8 65.Ne6 hxg6 66.Nxd8 d3 67.f7 Kg7 68.Qc1 Bf6+ 69.Kh3 Qd7+ 70.Kg2 Qxd8
71.Qxe3 Qd4
  -+  (-3.49)   Depth: 10/20   00:08:38  15808kN
64...Rd8 65.Qc2 Qb3 66.Bd5 Rxd5 67.f7 Rd8 68.Qe4 hxg6 69.Qxg6 d3 70.f8R+
  -+  (-2.99)   Depth: 10/20   00:12:03  22505kN
64...Rd8 65.Qc2 Rg8 66.f7 Qd7 67.Qe4 Qd8+ 68.Kh5 Qf8 69.fxg8Q+ Qxg8 70.Qe5+ Qg7
71.Qe8+ Qg8 72.Qxa4 e2 73.Bxe2 Qd5+
  +-  (1.94)   Depth: 10/20   00:48:32  99975kN
64...d3 65.g7+ Kg8 66.Bd5+ Qxd5 67.Nxd5 e2 68.Qxd3 e1Q 69.f7+ Kxf7 70.g8Q+ Rxg8
71.Qf5+ Ke8
  +-  (1.93)   Depth: 10/20   00:58:08  120143kN
64...d3 65.g7+ Kg8 66.Bd5+ Qxd5 67.Nxd5 e2 68.Qxd3 e1Q 69.f7+ Kxf7 70.g8Q+ Rxg8
71.Qf5+ Ke8
  +-  (1.58)   Depth: 10/20   00:58:23  120904kN
64...d3 65.g7+ Kg8 66.Bd5+ Qxd5 67.Nxd5 e2 68.Qxd3 e1Q 69.Ne7+ Kf7 70.g8Q+ Rxg8
71.Qxh7+ Ke6 72.Qf5+ Kf7 73.Qh7+ Ke6
  =  (0.00)   Depth: 10/20   00:59:09  122785kN
64...Rg8 65.Bd5 Qd7 66.g7+ Rxg7 67.fxg7+ Kxg7 68.Qxd4+ Bxd4 69.Ng6
  =  (-0.01)   Depth: 10/20   00:59:35  123673kN

Uri



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