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Subject: The Polgar bishop sacrifice

Author: K. Burcham

Date: 17:59:08 10/12/03


Too easy for programs.
I assume GM Karpov forgot this from his studies.

The sacrifice was first seen in Em Lasker – JH Bauer, Amsterdam 1889,
but also in Kirilov – Furman USSR Ch Qualifier 1949 and many others!

 [D] 4rrk1/p1pb1ppp/1p6/n1qPB3/8/2PBR3/5PPP/3QR1K1 w - - 0 1

Anaconda 1.0:

25.Bxh7+ Kh8 26.Qh5 Bg4 27.Qxg4 Rxe5 28.Rxe5 Kxh7
  +-  (5.65)   Depth: 7/20   00:00:00  107kN
25.Bxh7+ Kh8 26.Qh5
  +-  (5.65)   Depth: 8/22   00:00:01  236kN
25.Bxh7+
  +-  (6.28)   Depth: 9/26   00:00:01  351kN
25.Bxh7+
  +-  (7.28)   Depth: 9/26   00:00:01  373kN
25.Bxh7+ Kxh7 26.Qh5+
  +-  (11.27)   Depth: 9/26   00:00:02  572kN
25.Bxh7+
  +-  (11.79)   Depth: 10/29   00:00:03  758kN
25.Bxh7+
  +-  (12.79)   Depth: 10/31   00:00:03  923kN
25.Bxh7+
  +-  (16.79)   Depth: 10/46   00:00:05  1251kN
25.Bxh7+ Kxh7 26.Qh5+ Kg8 27.Bxg7 f6 28.Bxf6 Rxf6 29.Rg3+ Bg4 30.Rxg4+ Rg6
  +-  (#8)   Depth: 10/46   00:00:21  5012kN
25.Bxh7+
  +-  (#8)   Depth: 11/46   00:00:26  6472kN
25.Bxh7+
  +-  (#8)   Depth: 12/46   00:00:37  9490kN


Polgar,J (2722) - Karpov,A (2693) [C42]
Essent Hoogeveen NED (1), 12.10.2003

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.0-0 Nc6 8.c4 Nb4
9.Be2 0-0 10.a3 Nc6 11.cxd5 Qxd5 12.Nc3 Nxc3 13.bxc3 Qd6 14.Rb1 b6 15.Re1 Be6
16.Bd3 Rae8 17.Rb5 Na5 18.Rbe5 Nc6 19.R5e2 Bd7 20.d5 Na5 21.Ne5 Bf6 22.Bf4 Bxe5
23.Bxe5 Qxa3 24.Re3 Qc5. 25.Bxh7+!! Kxh7 26.Qh5+  black resigned

kburcham

Re: Genius 7 instantly Dana Turnmire 10:18:49 10/13/03
- Re: Genius 7 instantly Mike Byrne 18:07:28 10/13/03
  - Re: Genius 7 instantly Dana Turnmire 22:44:26 10/13/03
HIARCS 9 finds it in 2 seconds on my TBird 950 Sally Weltrop 08:34:34 10/13/03
Re: The Polgar bishop sacrifice martin fierz 05:07:08 10/13/03
- Re: The Polgar bishop sacrifice K. Burcham 14:59:29 10/13/03
Re: The Polgar bishop sacrifice Lyn Harper 04:36:55 10/13/03
Re: the Lasker double-bishop sacrifice Dave Gomboc 00:33:40 10/13/03
Pocket Pc Genius 1.05 finds Mate-in 8 in 8 seconds Mike Byrne 18:46:37 10/12/03
- Re: Pocket Pc Genius 1.05 finds Mate-in 8 in 8 seconds Timothy J. Frohlick 19:53:27 10/12/03
  - Re: Pocket Pc Genius 1.05 finds Mate-in 8 in 8 seconds Mike Byrne 20:08:14 10/12/03
- Re: Pocket Pc Genius 1.05 finds Mate-in 8 in 8 seconds Timothy J. Frohlick 19:42:03 10/12/03
  - Re: Pocket Pc Genius 1.05 finds Mate-in 8 in 8 seconds Mike Byrne 20:01:30 10/12/03

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