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Subject: Re: Strange behaviour of Shredder 8.

Author: Djordje Vidanovic

Date: 02:59:48 06/17/04

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Shredder 8, 256 MB hash, dual Xeon 2.4, infinite analysis, *.plr file deleted
beforehand (!). Shredder finds hxg5 in 9 seconds, ply 12, and keeps it steady.
The low positive score is due to the open h-file and king safety evals:


New game
r4rk1/1b3pp1/p5qp/1p1nP1N1/4N2P/3Q4/PP3PP1/R3R1K1 b - - 0 1

Analysis by Shredder 8:

1...hxg5 2.hxg5
  =  (-0.19)   Depth: 1/1   00:00:00
1...hxg5 2.hxg5
  =  (-0.19)   Depth: 1/2   00:00:00
1...hxg5 2.hxg5
  ±  (0.90)   Depth: 2/2   00:00:00
1...hxg5 2.hxg5 Rfe8
  ±  (0.72)   Depth: 2/3   00:00:00
1...Nf4 2.h5 Nxd3 3.hxg6 Nxe1 4.Rxe1
  ²  (0.60)   Depth: 2/5   00:00:00
1...Nf4 2.h5 Nxd3 3.hxg6 Nxe1 4.Rxe1
  ²  (0.60)   Depth: 2/6   00:00:00
1...Nb4 2.Nh3
  ²  (0.57)   Depth: 2/8   00:00:00
1...Nb4 2.Qd7 hxg5 3.Qxb7 gxh4
  ²  (0.48)   Depth: 2/9   00:00:00
1...Nb4 2.Qd7 hxg5 3.Qxb7 gxh4
  ²  (0.48)   Depth: 3/9   00:00:00
1...Rae8 2.Qf1 Rxe5
  =  (0.11)   Depth: 3/9   00:00:00
1...Rae8 2.Qf1 Rxe5
  =  (0.11)   Depth: 3/9   00:00:00
1...Rfe8 2.Red1 hxg5 3.Nxg5
  =  (0.09)   Depth: 3/9   00:00:00
1...Rfe8 2.e6 hxg5 3.exf7+ Kh7 4.fxe8Q
  =  (0.09)   Depth: 3/9   00:00:00
1...Rad8 2.b4 hxg5 3.Nxg5
  =  (-0.11)   Depth: 3/9   00:00:00
1...Rad8 2.e6 fxe6
  =  (-0.11)   Depth: 3/9   00:00:00
1...Rac8 2.Nh3 Rcd8
  =  (-0.13)   Depth: 3/9   00:00:00
1...Rac8 2.e6 hxg5 3.exf7+ Kh7
  =  (-0.13)   Depth: 3/9   00:00:00
1...Rac8 2.Qg3 Qe6 3.Nxe6 fxe6
  =  (0.12)   Depth: 4/12   00:00:01
1...Rac8 2.Qg3 Rc2 3.Qb3
  ²  (0.60)   Depth: 4/12   00:00:01
1...Nf4 2.Qg3 Qf5 3.Rac1 Qxe5
  ²  (0.59)   Depth: 4/12   00:00:01
1...Nf4 2.Qxb5 axb5 3.Nf6+ gxf6
  =  (0.24)   Depth: 4/12   00:00:01
1...Nf4 2.Qg3 Bd5 3.Qxf4 hxg5
  =  (0.24)   Depth: 4/12   00:00:01
1...hxg5 2.hxg5 Nb4 3.Nd6 Nxd3
  =  (0.23)   Depth: 4/12   00:00:01
1...hxg5 2.hxg5 Nb4 3.Nd6 Nxd3
  =  (-0.12)   Depth: 4/12   00:00:01
1...hxg5 2.hxg5 Nc7 3.Nc5 Qxg5
  =  (-0.12)   Depth: 4/12   00:00:01
1...hxg5 2.hxg5 Qxe4 3.Rxe4
  =  (0.13)   Depth: 5/12   00:00:01
1...hxg5 2.hxg5 Nc7 3.Qd7 Rad8 4.Qxc7 Bxe4
  ²  (0.48)   Depth: 5/14   00:00:01
1...Nf4 2.Qf3 Qf5 3.Qe3 Qg4
  =  (-0.01)   Depth: 5/14   00:00:01
1...Nf4 2.Qf3 Qf5 3.Qe3 Qg4
  =  (-0.01)   Depth: 5/14   00:00:01
1...Nf4 2.Qg3 Nh5 3.Qg4 Qe6 4.Nxe6 fxe6
  =  (0.24)   Depth: 6/16   00:00:01  52kN
1...Nf4 2.Qg3 Nh5 3.e6 Nxg3 4.Nf6+ gxf6
  =  (0.24)   Depth: 6/16   00:00:01  57kN
1...Nf4 2.Qg3 Nh5 3.Qe3 Bxe4 4.Qxe4 Kh8 5.Qxg6
  =  (-0.01)   Depth: 7/16   00:00:02  122kN
1...Nf4 2.Qg3 Bxe4 3.Qxf4 Rad8
  =  (-0.01)   Depth: 7/16   00:00:02  127kN
1...Nf4 2.Qg3 Bxe4 3.Qxf4 Rad8 4.Rxe4 Qe6 5.Nxe6
  =  (0.24)   Depth: 8/16   00:00:02  185kN
1...Nf4 2.Qg3 Bxe4 3.Qxf4 Bd5 4.Nf3 Rad8 5.Rf1 Bxf3 6.Qxf3
  ²  (0.46)   Depth: 8/16   00:00:02  280kN
1...Nf4 2.Qg3 Bxe4 3.Nxe4 Qxg3 4.Nxg3 Nd3 5.Re2 Rfe8 6.Rd1 Nxe5 7.Nf5
  ²  (0.41)   Depth: 9/18   00:00:03  588kN
1...Nf4 2.Qg3 Bxe4 3.Qxf4 Bd5 4.Nf3 Rad8 5.Rad1 Rfe8 6.b3 Bxf3 7.Qxf3 Rxd1
8.Qxd1
  ²  (0.35)   Depth: 10/19   00:00:05  944kN
1...Nf4 2.Qg3 Bxe4 3.Nxe4 Qxg3 4.Nxg3 Nd3 5.Re2 Rfe8 6.Rd1 Nxe5 7.Rde1 f6 8.Nf5
  ²  (0.48)   Depth: 11/23   00:00:07  1548kN
1...Nf4 2.Qg3 Nh5 3.Qg4 Bd5 4.Nd6 Be6 5.Qe4 Nf4 6.Qxf4 Qf5 7.Nxf5
  ±  (0.72)   Depth: 12/29   00:00:09  3244kN
1...hxg5 2.hxg5 Ne7 3.Rad1 Bxe4 4.Qxe4 Qxe4 5.Rxe4 Rad8 6.Rxd8 Rxd8 7.a4 bxa4
8.Rxa4
  ±  (0.71)   Depth: 12/29   00:00:09  3944kN
1...hxg5 2.hxg5 Ne7 3.Nc5 Qxd3 4.Nxd3 Rad8 5.Nc5 Ng6
  ±  (0.71)   Depth: 12/29   00:00:09  4193kN
1...hxg5 2.hxg5 Nc7 3.Rad1 Ne6 4.Nd6 Qxd3 5.Rxd3 Nf4 6.g6 Nxd3 7.Ne4 Nxe1
  ²  (0.60)   Depth: 13/29   00:00:12  9631kN
1...hxg5 2.hxg5 Nc7 3.Nc5 Qxd3 4.Nxd3 Ne6 5.g6 fxg6 6.Rac1 Rad8 7.Nc5 Nxc5
8.Rxc5 Bd5 9.a3
  ²  (0.58)   Depth: 14/29   00:00:19  15077kN
1...hxg5 2.hxg5 Nc7 3.Nc5 Qxd3 4.Nxd3 Ne6 5.b4 Nxg5 6.Nc5 Bc6 7.Rac1 Rfc8 8.f4
Ne6 9.Nxe6 fxe6 10.g4
  ²  (0.60)   Depth: 15/38   00:00:29  22844kN
1...hxg5 2.hxg5 Nc7 3.Qe3 Bxe4 4.Qxe4 Qxg5 5.Re3 Rfe8 6.f4 Qg4 7.Rh3 Rac8 8.Qh7+
Kf8 9.Rf1 Ne6 10.Qxg7+
  ²  (0.47)   Depth: 16/38   00:00:47  36626kN
1...hxg5 2.hxg5 Nc7 3.Nc5 Qxd3 4.Nxd3 Ne6 5.b4 Nxg5 6.Nc5 Bc6 7.Rad1 Ne6 8.Rd6
Nxc5 9.bxc5 Rac8 10.Red1 Ba8
  ²  (0.41)   Depth: 17/38   00:01:17  60509kN

(Vidanovic, MyTown 17.06.2004)



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