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Subject: Help with a Position.

Author: Mark Young

Date: 20:35:38 11/10/98


I was knocking out some positions with Rebel 10, when I tried what I thought
would be a simple stock sac that Rebel 10 would find easy.

[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Larsen"]
[Result "*"]
[Annotator "Young,M"]
[SetUp "1"]
[FEN "2r3k1/2r1ppb1/3p2p1/pq4Pn/1p1BP3/1B3P2/PPPQ4/1K1R3R w - - 0 1"]
[PlyCount "0"]

The Key move is RxN !, Rebel instead finds even after 10 min. BxB.

All the programs I tried Junior 5, Fritz 5, Crafty 15.18, ect. ect ,  find RxN!
in a matter of a few seconds.

My question is
(a) Is BxB just an alternative winning line in this position that Rebel 10
prefers?

(b) Is BxB just a misevaluation that all programs do in certain types of
position?




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