Author: Uri Blass
Date: 13:57:14 04/07/02
Go up one level in this thread
On April 07, 2002 at 14:52:21, Terry McCracken wrote: >On April 07, 2002 at 14:41:20, Mike Hood wrote: > >>On April 07, 2002 at 14:23:46, Terry McCracken wrote: >> >>>On April 07, 2002 at 11:57:18, Robert Hyatt wrote: >>> >>>>On April 07, 2002 at 10:41:27, Michael Fuhrmann wrote: >>>> >>>>>[D] 1b6/8/8/7p/6k1/6P1/8/6K1 w - - 0 1 >>>>> >>>>>Crafty, without tablebases, scores this as about -4.5 for white. Shouldn't the >>>>>score be 0.0? >>>> >>>> >>>>This excites some sort of bug that I haven't seen. the static evaluation for >>>>this position is 0.00, but the search produces some sort of position where the >>>>draw recognition fails... >>>> >>>>I'll look at it... >>> >>>Don't be too hard on yourself Dr. Hyatt, Fritz 7 although close to accurate >>>gives an eval of -0.81 pawns and Shredder is a little worse than Crafty at >>>-4.96, well Chess Tiger 14.0 is "out to lunch" between -12 to -11+ pawns! >>> >>>Sorry Christophe! You need to fix this problem before you release Chess Tiger >>>15.0. >>> >>>Terry >> >>This is a matter of opinion. I think that today's chess programmers have the >>right to assume the use of 5-piece tablebases. The time spent tweaking the >>algorithms for cases like this would be better spent on writing better >>algorithms for middlegame analysis. >> >>But it's the programmer's own decision. Maybe he wants to solve this problem >>anyway for the sake of his own intellectual achievement. > > >It is my opinion, but I feel _all_ aspects of the game need to be thoroughly >covered, Opening, Middlegame, and Endgame. > >It's a _tough_ job but I feel it needs to be done. > >Terry Non tablebase position seems to be more important and the general rule says that the stronger side has chances to win in similiar positions that are not tablebases positions. A program that says by static evaluation without tablebases 0.00 may say 0.00 also in the following position rhat is not a draw. [D]1b6/8/8/7p/7P/6Pk/8/6K1 w - - 0 1 Uri
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