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Subject: Tiger evaluation function

Author: Derek

Date: 20:23:21 04/10/01


This position is a study that I saw on the following website:
http://www.chesscafe.com/endgame/endgame.htm

White: Kc5,Nd5,Ng6,Bh7
Black: Ka5,Ba2,a3

White to move

Rebel-Tiger 14.0, using all 3,4, and 5-man tablebases

After the moves:

1.Nc3 Bb1 2.Nxb1 a2 3.Nd2

Tiger analyzes 3...a1=Q as lost for Black, but shows 3...a1=B as a draw for
Black. This is clearly incorrect, as after 4 Nb3+ Ka4 5 Nxa1, it's evaluation
changes to show that Black is mated in 10 moves. Is this a serious evaluation
error in the program?




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