Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: What makes Fruit so strong?

Author: Uri Blass

Date: 13:39:15 03/12/04

Go up one level in this thread


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



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.