Author: Jeremiah Penery
Date: 15:11:12 04/26/99
Go up one level in this thread
On April 26, 1999 at 13:39:23, Paul Richards wrote:
>Fritz 5.32 (with all service packs) can't correctly evaluate some of the
>positions in the following game. At move 12 white could have forced a
>perpetual check, but as the line continues, Fritz gives increasingly positive
^^^^^^^^^^^^^^^^^^^^^
>values for white, when in fact they should be negative and getting worse. For
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
I don't quite exactly see what you're saying...It looks to me that white should
be getting better - it is 3 pawns up, black's king is completely exposed, and it
has a lot more space than black.
>the position after 19. Rhg1 [epd =
>r1b3k1/ppp1b1r1/1nnp4/5P2/2PP4/2NB4/PP2NP1P/2KR2R1 b - - ] Fritz gives a
>+34 for 19...Rxg1 20. Rxg1+ Kf8 Rg4 at 11 ply, but the instant the move
>19...Rxg1 is actually made, the evaluation reverses to -50 with the line
>20 Rxg1+ Kf7. What gives? Crafty handles these positions correctly. Is
>this some kind of pruning/selective searching issue??
<snip game>
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