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Subject: Question for Bob Hyatt re Crafty's superior analysis

Author: Christopher A. Morgan

Date: 18:29:52 11/16/03


Bob,

As you posted in one of the replies below, Crafty analyzed the ending position
in game three of the X3D match, after white’s Rb3, about  +2.6, and even before
the end that white had a far superior position.  Uri, I think it was, posted
analysis of other engines and most were +1 or less.  Results I got for depth of
12 ply were as follows: Crafty 19.03 - +2.68, Shredder 7.04 - +0.95, Fritz 8 -
+0.44, CT14 - +1.24, and for depth of 15 for Junior 7 - +1.05.  I think we have
to assume that the new deep Fritz running in a 4X2.8 configuration also came up
with a similar analyses that it was lost, probably +2.5 or worse.  Tony Rook on
Chess FM radio said 4-5 moves before the end that Mathias had said Fritz would
not resign unless the analysis was that much in favor of GK (white).

There was no doubt among the grandmasters that Fritz (black) was toast, with GM
John Fedorowicz on Chess FM radio even going so far to wonder whether GK would
be getting upset that Fritz was playing on in a completely lost position.
Obviously your Crafty was one of the few engines to analyze the position
properly.  I congratulate you on Crafty’s fine analysis.  What do you attribute
Crafty’s analysis superiority in this position to compared to the top commercial
programs?  Thanks.

Chris



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