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Subject: Re: Testposition (kingsafety + tactics)

Author: Uri Blass

Date: 02:58:30 03/29/01

Go up one level in this thread


On March 28, 2001 at 22:55:38, Mike S. wrote:

>On March 28, 2001 at 11:59:16, Gian-Carlo Pascutto wrote:
>
>>[D]r1b1k2r/5pp1/p2bp3/3q1nN1/P2p2np/3P2P1/1BP1BP1P/RN1Q1RK1 w kq - 0 2
>Hiarcs 7.32, on P3/700 MHz (32 MB hash):
>
>1.Bxg4 Nxg3 2.fxg3 Qxg5 3.Qf3 hxg3 4.Qxf7+ Kd8
>  +-  (2.89)   depth: 1   00:00:00
>  +-  (2.06)   depth: 7/25   00:00:11  922kN
>1.Bf3 Qe5
>  +-  (2.58)   depth:  7/25   00:00:15  1219kN
>  +-  (2.51)   depth: 10/29   00:03:21  13914kN
>
>
>and for black, after 1.Bxg4:
>
>New position
>r1b1k2r/5pp1/p2bp3/3q1nN1/P2p2Bp/3P2P1/1BP2P1P/RN1Q1RK1 b kq - 0 1
>
>1...Nxg3 2.fxg3 Qxg5 3.Qf3 hxg3 4.Bxd4 Bc5 5.Qc6+ Bd7
>  +-  (2.85)   depth: 4/19   00:00:00
>  +-  (2.04)   depth: 9/29   00:03:59  18475kN

Deep Fritz suggests 1...hxg3 after 1.Bxg4

New position
r1b1k2r/5pp1/p2bp3/3q1nN1/P2p2Bp/3P2P1/1BP2P1P/RN1Q1RK1 b kq - 0 1

Analysis by Deep Fritz:

1...hxg3!
  +-  (2.22)   Depth: 1/5   00:00:00
1...hxg3! 2.fxg3 Ne3
  +-  (1.59)   Depth: 1/8   00:00:00
1...Nxg3!
  +-  (1.56)   Depth: 1/8   00:00:00
1...Nxg3! 2.fxg3 Qxg5 3.Qf3 hxg3
  ±  (1.25)   Depth: 1/8   00:00:00
1...Nxg3 2.Bf3 Qxg5
  ±  (1.37)   Depth: 2/11   00:00:00
1...hxg3!
  ±  (1.34)   Depth: 2/12   00:00:00
1...hxg3! 2.fxg3 Nxg3 3.hxg3 Rh1+ 4.Kf2
  ±  (1.16)   Depth: 2/12   00:00:00  1kN
1...hxg3!
  ±  (0.84)   Depth: 3/20   00:00:00  2kN
1...hxg3! 2.fxg3 Ne3 3.Qf3 Nxf1
  =  (0.12)   Depth: 3/20   00:00:00  5kN
1...hxg3--
  ²  (0.69)   Depth: 4/19   00:00:00  8kN
1...hxg3-- 2.Bf3 Ne3 3.fxe3 Qxg5
  ±  (1.22)   Depth: 4/19   00:00:00  9kN
1...hxg3 2.Bf3 Ne3 3.fxe3 Qxg5 4.Bc6+ Kd8
  ±  (1.37)   Depth: 5/18   00:00:00  24kN
1...hxg3--
  +-  (1.69)   Depth: 6/19   00:00:00  51kN
1...hxg3-- 2.Bf3 Ne3 3.Bxd5 Nxd1
  +-  (2.12)   Depth: 6/20   00:00:00  64kN
1...Nxg3!
  +-  (2.09)   Depth: 6/21   00:00:00  73kN
1...Nxg3! 2.fxg3 Qxg5 3.Qf3 hxg3 4.hxg3 e5 5.Qxa8
  +-  (1.84)   Depth: 6/21   00:00:00  95kN
1...Nxg3 2.fxg3 Qxg5 3.Qf3 hxg3 4.hxg3 e5 5.Qxa8 Qxg4 6.Qc6+
  +-  (1.84)   Depth: 7/25   00:00:00  236kN
1...Qb7!
  +-  (1.81)   Depth: 7/29   00:00:00  380kN
1...Qb7! 2.Qf3 Rb8 3.Ra2 Qxf3 4.Nxf3 hxg3 5.hxg3 Nh6
  +-  (1.69)   Depth: 7/29   00:00:00  534kN
1...Qb7 2.Qf3 Rb8 3.Qxb7 Rxb7 4.Ra2 hxg3 5.hxg3 Nh6 6.Bf3 Rb4
  +-  (1.81)   Depth: 8/32   00:00:01  1101kN
1...Qb7 2.Qf3 Rb8 3.Qxb7 Rxb7 4.Ra2 hxg3 5.hxg3 Be7 6.Bxf5 Bxg5
  +-  (1.84)   Depth: 9/30   00:00:04  3009kN
1...Qb7 2.Qf3 Qxf3 3.Bxf3 Rb8 4.Ra2 hxg3 5.hxg3 e5 6.Bc6+
  +-  (1.94)   Depth: 10/34   00:00:16  10322kN
1...Nxg3!
  +-  (1.91)   Depth: 10/34   00:00:21  13066kN
1...Nxg3! 2.fxg3 Qxg5 3.Qf3 hxg3 4.h3 Qe3+ 5.Kg2 Rb8 6.Qxf7+ Kd8 7.Qxg7
  +-  (1.56)   Depth: 10/34   00:00:23  14196kN
1...Nxg3 2.fxg3 Qxg5 3.Qf3 hxg3 4.h3 Ra7 5.Qc6+ Ke7 6.Bxd4 Rc7 7.Rxf7+
  +-  (1.62)   Depth: 11/32   00:00:36  22010kN
1...Nxg3 2.fxg3 Qxg5 3.Qf3 hxg3 4.h3 Qe3+ 5.Kg2 Qxf3+ 6.Bxf3 Rb8 7.Bxd4
  +-  (1.56)   Depth: 12/37   00:01:28  54439kN
1...Nxg3 2.Qf3 Qxf3 3.Bxf3 Nxf1 4.Bxa8 Nxh2 5.Na3 Ng4
  +-  (1.47)   Depth: 13/37   00:04:29  168066kN
1...hxg3!
  +-  (1.44)   Depth: 13/38   00:06:22  243192kN
1...hxg3! 2.Bf3 Qe5 3.Bxa8 Rxh2 4.Bc1 g2 5.Bc6+ Ke7 6.Nf3
  ±  (1.00)   Depth: 13/41   00:09:14  357155kN
1...hxg3 2.Bf3 Qe5 3.Bxa8 Rxh2 4.Bc1 g2 5.Bc6+ Ke7 6.Nf3
  ±  (0.97)   Depth: 14/43   00:16:04  632774kN

(blass, tel-aviv 29.03.2001)

Uri



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