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Subject: Re: Shredder 7.04 too agressive ?

Author: Uri Blass

Date: 06:34:58 05/30/03

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On May 30, 2003 at 08:46:07, Drexel,Michael wrote:

>On May 30, 2003 at 08:22:07, m.d.hurd wrote:
>
>>If your interested. Athlon 2100 XP 1024 pc2700 ram. The point is why did
>>Shredder play Rook takes Bishop ?
>
>Because it was necessary. It was the best chance in this position.
>Otherwise black would have a decisive attack against the white King.
>This was not at all over-agressive.
>Black played agressive chess in this game.
>
>Michael

The real question is why did Shredder play 52.Qd2 when after this move it is
forced to sacrifice the rook for a bishop when there was a better
alternative(52.Qb6 Rc6 53.Qe3 with repetition).

It seems that Shredder lost because it did not want a draw.
If aggresive chess mean trying to win when it is impossible to do it then it
means that shredder was too aggresive.

[D]8/3Rp1k1/4qbpp/P2R1p2/4p2P/2r1Q1P1/5P2/5K2 w - - 0 1

Analysis by Shredder 7.04:

52.a6 Rxe3 53.fxe3
  -+  (-3.11)   Depth: 1/2   00:00:00
52.a6 Rxe3 53.fxe3 Qxa6+ 54.Kf2
  -+  (-4.60)   Depth: 1/5   00:00:00
52.a6 Qxa6+ 53.Ke1 Rxe3+ 54.fxe3
  -+  (-4.07)   Depth: 1/5   00:00:00
52.R5d6 Qxd6 53.Rxd6 Rxe3
  -+  (-3.93)   Depth: 1/5   00:00:00
52.R5d6 Qxd6 53.Rxd6 Rxe3
  -+  (-3.93)   Depth: 1/6   00:00:00
52.Qb6
  ±  (1.04)   Depth: 1/6   00:00:00
52.Qb6
  +-  (2.74)   Depth: 1/6   00:00:00
52.Qb6
  +-  (2.74)   Depth: 1/6   00:00:00
52.Qb6 Qg8
  +-  (2.41)   Depth: 2/6   00:00:00
52.Qb6 Qg8
  +-  (2.41)   Depth: 2/7   00:00:00
52.Qb6 Rc1+ 53.Kg2 Qxb6
  +-  (2.16)   Depth: 3/7   00:00:00
52.Qb6 Rc1+ 53.Kg2 Qg8
  +-  (2.27)   Depth: 3/7   00:00:00
52.Qb6 Rc6 53.Qb7 Ra6
  +-  (2.32)   Depth: 4/9   00:00:00
52.Qb6 Rc1+ 53.Kg2 Rc6 54.Qb7 Ra6
  +-  (2.26)   Depth: 5/14   00:00:00
52.Qb6 Rc6 53.Qb7 Ra6 54.Kg1 Kh7
  +-  (2.49)   Depth: 6/14   00:00:00  17kN
52.Qb6 Rc1+ 53.Kg2 Rc6 54.Qb7 Ra6 55.Qc8 Kh7
  +-  (2.37)   Depth: 7/17   00:00:00  49kN
52.Qb6 Rc6 53.Qb7 Ra6 54.h5 e3 55.hxg6 exf2 56.Kxf2 Kxg6
  +-  (2.49)   Depth: 8/19   00:00:01  138kN
52.Qb6 Rc6 53.Qb7 e3 54.fxe3 Qxe3 55.Rd1 Qf3+ 56.Kg1
  +-  (2.24)   Depth: 9/22   00:00:01  204kN
52.Qb6 Rc6 53.Qb5 Rc2 54.Rd2 Rxd2 55.Rxd2 Bc3 56.Rd5 Qc8
  +-  (2.02)   Depth: 9/22   00:00:02  325kN
52.Qb6 Rc6 53.Qb5 Rc2 54.Rd2 Rc1+ 55.Rd1 Rxd1+ 56.Rxd1 Qa2 57.Qa4 Qxa4
  +-  (1.98)   Depth: 10/22   00:00:04  622kN
52.Qb6 Rc6 53.Qb5 f4 54.h5 Qh3+ 55.Kg1 fxg3 56.hxg6 Rc1+ 57.Rd1 Qh2+ 58.Kf1
Qxf2#
  +-  (1.73)   Depth: 11/28   00:00:09  1473kN
52.Qb6 Rc6 53.Qb3 Rc3 54.Qb5 e3 55.Qb6 Rc1+ 56.Rd1 Rxd1+ 57.Kg2 Qxd7 58.h5
  ±  (1.27)   Depth: 11/32   00:00:21  3597kN
52.Qb6 Rc6 53.Qb3 Rc3 54.Qb5 e3 55.Qe2 Ra3 56.Rd8 Bc3 57.Qxe3 Qxe3
  ±  (1.21)   Depth: 12/38   00:00:44  7695kN
52.Qb6 Rc6 53.Qb3 f4 54.Kg2 e3 55.gxf4 e2 56.R5d6 Qxb3 57.Rxe7+ Bxe7 58.Rxc6 e1Q
  ±  (0.96)   Depth: 13/38   00:01:45  17853kN
52.Qb6 Rc6 53.Qb1 e3 54.fxe3 f4 55.Qe1 fxe3 56.g4 Rc2 57.Rxe7+ Bxe7
  ²  (0.48)   Depth: 13/38   00:02:43  27056kN
52.Qb6 Rc6 53.Qb1 f4 54.Qb5 fxg3 55.Rg5 Qxd7 56.Rc5 Bxh4 57.Qxc6 Qxc6 58.fxg3
Qxc5
  =  (0.23)   Depth: 14/43   00:07:53  76930kN
52.Qb6 Rc6 53.Qe3
  =  (0.00)   Depth: 14/43   00:11:48  115350kN

(Blass, Tel-Aviv 30.05.2003)


Uri



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