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Subject: Re: Polugaevsky-Petrosian 50th USSR Ch Final 1958

Author: Ricardo Gibert

Date: 15:22:10 11/09/02

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On November 09, 2002 at 18:13:35, Ricardo Gibert wrote:

>Are there any chess engines that understand anything about strategic exchange
>sacs?
>
>
>The following is an instructive example of an exchange sac that yields a
>strategicly won position:
>
>[D]r3r1k1/1pqn1pbp/p2p2p1/3P4/1RP5/4B3/P3BPPP/3Q1RK1 b - -
>
>From Polugaevsky-Petrosian 50th USSR Ch Final 1958


Oops! make that 1983.


>
>19...Rxe3!! 20.fxe3 Nc5-+ 21.Qc2 Re8 22.Rf3 Bh6 23.Qc3 Qe7 24.Rb6? Na4 0-1
>
>Neither Nimzo8 nor Ruffian 1.0.1 have a clue in the above position.



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