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Subject: Re: Most Top Programs see Porgal sacrifise against Berker !

Author: Terry McCracken

Date: 11:54:17 04/21/03

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On April 20, 2003 at 04:26:53, Jorge Pichard wrote:

>
>Here Polgar played 18.Rh7+!! Kxh7 19.Qh2+ Kg8 20.Rh1 and Berkes had to give up
>his queen to avoid mate. 20...Bxg5+ 21.Nxg5 Qxg5+ 22.f4 Qxf4+ 23.Qxf4 Bxe4
>24.Qxe4 1-0. The young Hungarian decided that knight and rook wasn't enough for
>the queen and resigned. A good lesson for the junior from the famous
>
>New game
>[D]1r1q1r2/pbpnbpk1/1p2p1p1/6P1/3PBQP1/5N2/PPP2P2/2KR3R w - - 0 1
>
>Analysis by Fritz 8:
>
>1.Bxb7 Rxb7 2.Rh4 Bd6 3.Qe4 Rb8 4.Rdh1 c5 5.Rh7+
>  ³  (-0.59)   Depth: 7/24   00:00:00  85kN
>1.Bxb7 Rxb7 2.Rh6 Bd6 3.Qe4 c6 4.Rdh1 Rc7 5.Rh7+ Kg8
>  ³  (-0.62)   Depth: 8/27   00:00:00  240kN
>1.Bxb7!
>  ³  (-0.34)   Depth: 9/31   00:00:00  433kN
>1.Bxb7!
>  =  (-0.06)   Depth: 10/34   00:00:02  1107kN
>1.Bxb7 Rxb7 2.Rh6 Bd6 3.Qe4 Be7 4.Qf4
>  =  (0.00)   Depth: 11/31   00:00:06  3433kN
>1.Rh7+!
>  =  (0.03)   Depth: 11/35   00:00:13  7250kN
>1.Rh7+!
>  =  (0.19)   Depth: 11/35   00:00:13  7733kN
>1.Rh7+!
>  ²  (0.50)   Depth: 11/35   00:00:15  8759kN
>1.Rh7+ Kxh7 2.Qh2+ Kg8 3.Rh1 Bxg5+ 4.Nxg5 Qxg5+ 5.f4 Qxf4+ 6.Qxf4 Bxe4 7.Qxe4
>Kg7 8.g5 Rh8
>1.Rh7+ Kxh7 2.Qh2+ Kg8 3.Rh1 Bxg5+ 4.Nxg5 Qxg5+ 5.f4 Qxf4+ 6.Qxf4 Bxe4 7.Qxe4 c5
>8.g5 Kg7 9.dxc5 bxc5
>1.Rh7+ Kxh7 2.Qh2+ Kg8 3.Rh1 Bxg5+ 4.Nxg5 Qxg5+ 5.f4 Qxf4+ 6.Qxf4 Bxe4 7.Qxe4 c5
>8.g5 Rbd8 9.Kd2 cxd4
>  ±  (1.09)   Depth: 13/39   00:00:47  27239kN
>
>(Pichard, MyTown 20.04.2003)

He should have seen it coming, it's an elementary mating patteren, Rh7+ is easy
for both people and machines.

Terry



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