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Subject: Test Position - Is this exchange sac sound?

Author: Roy Brunjes

Date: 13:22:21 07/18/04


In a recent game between Shredder 8 and Chessmaster 9000 on ICC the following
position arose:

[D]r1b3k1/pp2n1b1/1qn1prpp/2pp4/5B1P/2PP1NP1/PPQ2PB1/RN3RK1 b - - 0 13

Chessmaster played 13. ... Rxf4!?

Is this sound?  I have analyzed it with the help of both Chessmaster and
Shredder 8 and it seems pretty good to me, but I do not have the CPU horsepower
and/or time necessary to test as many programs and all of the possible
variations as the group does here.

The game was won in convincing fashion at 10m+10sec time control as follows:

[Event "ICC Game"]
[Site ""]
[Date "2004.7.17"]
[Round ""]
[White "Shredder 8 running on Pentium IV 2.8 GHz"]
[Black "SKR_Jr_Mix running on Centrino 1.5 GHz"]
[TimeControl "300+5"]
[Result "0-1"]

1.e4 e6 2.Qe2 c5 3.g3 Nc6 4.c3 g6 5.Bg2 Bg7 6.Nf3 Nge7 7.O-O d5 8.d3 O-O
9.e5 h6 10.h4 Qb6 11.Bf4 f6 12.exf6 Rxf6 13.Qc2 Rxf4 14.gxf4 Bd7 15.Qd2
Rf8 16.Re1 Qc7 17.Na3 Rxf4 18.Rad1 Nf5 19.h5 Nce7 20.hxg6 Nxg6 21.Nc2
Nfh4 22.Nxh4 Rxh4 23.Kf1 Nf4 24.Qe3 e5 25.Rd2 Nxg2 0-1


Note1: I set CM9000 to a time control of 5m+5sec to allow for manual operation
of the program on ICC without losing on time.

Note2: Yes, Shredder's opening line is weird -- it is not using the standard
book, so no flames about that please.

Roy



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