Author: allan johnson
Date: 22:31:21 12/04/05
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On December 04, 2005 at 20:15:42, Jaime Benito de Valle Ruiz wrote: >On December 04, 2005 at 19:08:08, allan johnson wrote: > >>Can someone tell me why Fruit2.2.1 evaluates this drawn position, >>[D]2b1k1b1/8/8/8/8/8/5K2/8 b - - 01 >>so highly for black? (-7.99) Admittedly after the evaluation is completed an >>info message comes up saying insufficient material but I was curious about the >>reason for the score. >>Al >> > >The reason is very simple: Fruit uses a very simple code to recognize drawish >endgames, and in this case it assumes that a bishop pair will have both coloured >bishops (and I bet Fabien was aware of this limitation when he wrote the code). >He probably did it like this is because that is what you will get virtually >every single time in REAL games, so the code works fine in practice, not in >imaginary test positions like this. >Surely Fabien could have added a few more lines just to prevent people from >finding twisted positions that have no effect on the real playing strength of >the program, what why be bothered? >Regards, > > Jaime Jaime Thanks for the feedback.You are probably right; it was just that I was surprised that Fritz 9 and CM 10 came up with the 0.00 score immediately. Al
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