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Subject: King safety test position

Author: Kim Roper Jensen

Date: 14:59:26 03/15/02

Hi

Just wanted to share a position from a game I played some years ago.

It's a position where its hard to see which side, have the best protected king.

[D] 2r1k1nr/4ppbp/3p2p1/p3P3/bp1B1PP1/7P/qPPQ2B1/1NKR3R w - - 0 1

How long does it take to see that white have the better position ??

Best move here is 1.exd6!

Here's Shredder 6.02(CB) analysis with 512 MGbyte Hash on a dual 1 Ghz p3

Shredder 6.02 - Jensen,K
2r1k1nr/4ppbp/3p2p1/p3P3/bp1B1PP1/7P/qPPQ2B1/1NKR3R w - - 0 1

Analysis by Shredder 6.02:

1.Nc3 bxc3 2.Bxc3
  -+  (-3.04)   Depth: 1/2   00:00:00
1.Nc3 bxc3 2.Bxc3
  -+  (-3.04)   Depth: 1/2   00:00:00
1.Be4 d5 2.Bd3 Kf8
  µ  (-1.10)   Depth: 1/2   00:00:00
1.Be4 d5 2.Bd3 Kf8
  µ  (-1.10)   Depth: 1/2   00:00:00
1.Be4 d5 2.Bd3 h5 3.g5
  µ  (-1.20)   Depth: 2/4   00:00:00
1.Be4 d5 2.Bd3 h5 3.g5
  µ  (-1.20)   Depth: 3/6   00:00:00
1.Be4 d5 2.Bd3 h5 3.g5
  µ  (-0.97)   Depth: 4/8   00:00:00
1.Be4 d5 2.Bd3 h5 3.g5
  µ  (-0.97)   Depth: 5/10   00:00:00
1.Be4 d5 2.Bd3 h5 3.Qe3 hxg4 4.hxg4 Rxh1 5.Rxh1
  µ  (-1.02)   Depth: 6/12   00:00:00
1.exd6 Rxc2+ 2.Qxc2 exd6 3.Bxg7 Bxc2 4.Kxc2
  µ  (-1.01)   Depth: 6/12   00:00:00
1.exd6 Rxc2+ 2.Qxc2 Qa1 3.Bxg7 Bxc2 4.Bc6+ Kd8 5.dxe7+ Kxe7 6.Kxc2
  ³  (-0.66)   Depth: 6/12   00:00:00
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.Rhe1 Kf8
  ³  (-0.38)   Depth: 6/12   00:00:00
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.Rhe1 Kf8 5.Qe5
  =  (-0.19)   Depth: 7/14   00:00:00  204kN
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.Rhe1 Qc4 5.Qf2 Kf8 6.Re5
  ³  (-0.39)   Depth: 8/16   00:00:01  438kN
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.Qe5 Qc4 5.c3 bxc3 6.Nxc3 Qa2
  ³  (-0.38)   Depth: 9/18   00:00:03  1228kN
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.g5 b3 5.c4 Bf5 6.Na3 Qa1+ 7.Kd2 Qxb2+ 8.Qxb2
Rd8+ 9.Ke2 Bg4+ 10.hxg4 Rd2+ 11.Kxd2 Ne4+ 12.Bxe4
  =  (-0.13)   Depth: 10/20   00:00:10  3899kN
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.g5 b3 5.c4 Bf5 6.Na3 Qa1+ 7.Kd2 Qxb2+ 8.Qxb2
Rd8+ 9.Ke2 Bg4+ 10.hxg4 Rd2+ 11.Kxd2 Ne4+
  ²  (0.37)   Depth: 10/20   00:00:14  5284kN
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.g5 Qa4 5.Be4 b3 6.gxf6 bxc2 7.Qxa4 cxd1Q+
8.Kxd1 Bxa4+ 9.Kd2
  ²  (0.37)   Depth: 10/20   00:00:15  5775kN
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.g5 Qa4 5.Be4 b3 6.gxf6 bxc2 7.fxe7 cxd1Q#
  =  (0.12)   Depth: 11/22   00:00:17  6770kN
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.g5 Qa4 5.Rd2 Bf5 6.Na3 Qd7 7.Nc4 Kf8 8.gxf6
Bxc2
  =  (0.12)   Depth: 11/22   00:00:25  9915kN
1.exd6 Bxd4 2.d7+ Bxd7 3.Qxd4 Nf6 4.g5 Qa4 5.Rd2 Bf5 6.b3 Bxc2 7.bxa4 Be4+ 8.Nc3
Bd5
  ²  (0.37)   Depth: 12/24   00:00:52  20093kN
1.exd6 Kf8 2.d7 Rd8 3.Bxg7+ Kxg7 4.Bd5 Qa1 5.Qd4+ f6 6.Qb6 Rxd7 7.Rhe1
  ²  (0.60)   Depth: 12/24   00:01:33  35204kN
1.exd6 Kf8 2.d7 Rd8 3.Bxg7+ Kxg7 4.Bd5 Qa1 5.Qd4+ f6 6.Qc5 Bxd7 7.Bxg8 Rhxg8
8.Qxe7+ Kh8 9.Rxd7 Rxd7
  ±  (0.85)   Depth: 13/26   00:02:50  63938kN
1.exd6 Bf6 2.g5 Bxd4 3.d7+ Bxd7 4.Qxd4 Qa4 5.Be4 f6 6.Rhe1 b3 7.Qxa4 Bxa4
  ±  (1.06)   Depth: 13/26   00:04:46  108222kN
1.exd6 Kf8 2.d7 Rd8 3.Bxg7+ Kxg7 4.Bd5 Qa1 5.Qd4+ f6 6.Qb6 Nh6 7.Qxa5 Rxd7 8.Bb3
Bxb3
  ±  (1.30)   Depth: 14/28   00:08:23  190995kN

Re: King safety test position Matthias Gemuh 09:24:35 03/16/02
Re: King safety test position Slater Wold 16:27:32 03/15/02
- Re: King safety test position Tony Werten 01:27:52 03/16/02
- Re: King safety test position Scott Gasch 18:45:39 03/15/02
  - Re: King safety test position Slater Wold 22:21:11 03/15/02
    - Re: King safety test position Jeremiah Penery 08:18:37 03/16/02
  - Re: King safety test position Slater Wold 22:14:30 03/15/02
- Singular extensions? Jeremiah Penery 17:38:08 03/15/02
  - Re: Singular extensions? Slater Wold 22:16:12 03/15/02
  - Re: Singular extensions? Slater Wold 22:15:49 03/15/02
Re: King safety test position Roy Eassa 15:20:13 03/15/02

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