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Subject: Re: Is silicon silly?

Author: Drexel,Michael

Date: 01:37:28 12/31/04

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On December 30, 2004 at 17:58:19, Torstein Hall wrote:

>On December 29, 2004 at 11:39:10, Misael Banuelos wrote:
>
>>The next annotated game was published at the chess column of the Spanish
>>newspaper 'El Pais' on December 24, and it was written by chess journalist and
>>Fide Master Leontxo Garcia.
>>
>>Yesterday I decided to post this message in this forum and I have translated it
>>into English. I hope I didn't commit too many mistakes in this language.
>>
>>Regards.
>>
>>MB
>>
>>---
>>
>>
>>[D] 6k1/6b1/1B1p2qp/3Pp1p1/2r1p3/3n2P1/P2QB2P/R5K1 w - - 0 27
>>
>>Position after 26...Rxc4
>>
>>*Silicon is silly*
>>
>>White: Gelfand.
>>Black: Sutovski.
>>King's Indian Defence.
>>Pamplona, December 22, 2004.
>>
>>In the opening round Israeli Boris Gelfand manages very well a position that
>>computers don't understand yet.
>>
>>1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 0-0 6.Nf3 e5 7.Be3 h6 8.0-0 Ng4 9.Bc1
>>Nd7 10.d5 Ngf6 11.Be3 Ng4 12.Bd2 f5 13.g3 fxe4 14.Nh4 g5 15.Ng6 Nxf2 16.Rxf2
>>Rxf2 17.Kxf2 Qf6+ 18.Kg1 Qxg6 19.Nb5 Nc5 20.Nxc7 Rb8 21.Be3 b6
>>
>>Black's advantange, a pawn, is very little important: the bishop on g7 is almost
>>useless and the pawns on a7, b6 and d6 are weak.
>>
>>22.Nb5 Nd3?!
>>
>>As the reader is going to understand very soon, it was better 22...a6
>>
>>23.Nxa7 Nxb2 24.Qd2 Nd3 25.Nxc8 Rxc8 26.Bxb6 Rxc4 (diagram)
>>
>>Gelfand has got a clear advantage, thanks to his passed pawn on a2. But chess
>>programs don't appreciate it, not even after a long calculation time. It is due
>>to the so called 'horizon effect': Silicon is uncapable of understanding that
>>the little pawn on a2 is a potential queen, something that any chess player of
>>certain skill sees it in tenths of second.
>>
>>27.a4! Qe8 28.a5! Ra4
>>
>>The computer shows that 28...Qb5 is advantageous for Black, without noticing
>>that after 29.Be3
>
>Here Hiarcs 9 suggest 29..Ra4 with a 0.00 score that seems logical to me as the
>pawn now looks like it is stopped.
>This instead of the sufggestion 29...Qxd5 etc. etc.

0.00 score isn“t logical. White is clearly better after 30.Qc3!, probably
winning.
28...Qb5 is of course not a mistake. After the game continuation 28...Ra4 the
game was over soon.

Michael


>
>Torstein
>
>30.a6 Rc8 31.a7 Qa8 32.Bg4 Rf8 33.Be6+ Kh8 34.Qa2, with
>>the threat of Bd5, 34...Nb4 35.Qb3, Black must resign.
>>
>>29.Qd1 Rxa1 30.Qxa1 Qb5 31.Be3 Qb3 32.Bd1!
>>
>>The last trick was 32.a6 Nf4 33.a7 Qxe3+ 34.Kh1 Qxe2 35.a8=Q+ Kh7 36.gxf4, and
>>now both 36...Qf3+ and 36...exf4 are drawn.
>>
>>32...Qb4 33.Bg4 Nc5 34.a6! Nxa6 35.Qxa6 Qe1+ 36.Kg2 Qxe3 37.Be6+ Kh7 38.Bf5+ Kg8
>>39.Qc8+
>>
>>Sutovski resigned in view of an imminent mate.



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