Author: Uri Blass
Date: 13:39:15 03/12/04
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On March 12, 2004 at 16:14:50, Uri Blass wrote: >On March 12, 2004 at 14:49:28, Steve Maughan wrote: > >>Amazing! >> >>I'm amazed at Fruit's score. I've downloaded it and it seems like a robust >>engine but I note that it's quite slow and according to the author has little >>knowedge above and beyond piece tables. Monarch is my engine. It's nowhere >>near as strong as Fruit - I'd estimate Fruit is +200 ELO stronger than Monarch. >>Like Fruit, Monarch also has just piece tables and I believe that Monarch is >>probably even a little faster than Fruit. Like Fruit Monarch also has Null >>move, check extensions and hash table (2 probes) i.e. on paper they seem to be >>close in spec. So the question is what makes Fruit so strong? >> >>a) Fewer bugs - quite possible! >>b) ETC - Monarch doesn't have this - Fruit does >>c) No PV cut-off's in Fruit >>d) Better piece square tables >>e) Combination of b, c & d >>f) ? >> >>Of course another explanation is that Fruit is much more sophisticated than the >>author claims but I see no reason to think this. >> >>Any thoughts? >> >>Steve > >It has some boolean features. > >I understood that it also has some pawn structure evaluation. > >Uri Note that also for me the result of fruit is very surprising and it shows that inspite of the fact that I believe that chess is mainly a search based game I still underestimated search. It seems to me now that it is possible to develop a chess program with fruit's evaluation that is going to be stronger than Crafty of today. Uri
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