Search found 3006 matches

by Rebel
Tue Jul 24, 2012 1:24 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Some thoughts on QS
Replies: 115
Views: 60853

Re: Some thoughts on QS

diep wrote: In its original definition a SEE is a function that REPLACES a quiescencesearch.
I remember the moment when I replaced SEE for QS (around 1983) and the huge elo jump it gave. QS produces a lot more reliable result of the leaf position than SEE possibly can.
by Rebel
Tue Jul 24, 2012 1:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Some thoughts on QS
Replies: 115
Views: 60853

Re: Some thoughts on QS

Stupid thought by an idiot: prune if SEE < alpha. Even if we are not better positionally, we will probably be able to make up with material. End of stupid thought. Matthew:out There are much better ways that if SEE < alpha. For example, winning a pawn is not a good capture if you are a rook down. W...
by Rebel
Tue Jul 24, 2012 1:06 pm
Forum: Computer Chess Club: General Topics
Topic: (book) learning and adjusted games?!
Replies: 1
Views: 419

Re: (book) learning and adjusted games?!

Likely there are no differences at all. Learning is not dependent on the game result but a lot earlier in the game. It will depend from author to author but when an engine produces a (say) -3.xx score you don't want to enter that position again even if it manages a different result than a loss.
by Rebel
Tue Jul 24, 2012 6:44 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: 60 games Komodo 5 against Top4 at 120m+3s
Replies: 120
Views: 27421

Re: 60 games Komodo 5 against Top4 at 120m+3s

Quite frankly, we are puzzled. Our own distributed tester (mostly independent testers) show Komodo 5 to be 15 elo ahead of Houdini 1.5, after many thousand games. You know how it is and when the randomness monster strikes then it is as Robert said, your turn of being the unlucky one. Just recently ...
by Rebel
Sun Jul 22, 2012 8:06 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: My wish list for cutechess-cli
Replies: 11
Views: 1269

Re: My wish list for cutechess-cli

Tx HGM, I will try to get cutechess-cli to work with xboard and investigate what's already possible.
by Rebel
Sat Jul 21, 2012 7:12 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: My wish list for cutechess-cli
Replies: 11
Views: 1269

My wish list for cutechess-cli

My wish list for cutechess-cli to speed-up testing. 1. The ability for an engine to terminate the game and save the game in the PGN with a "*" game score. Why? 2 examples: 1a) Say you are testing King Safety then when the queens are of the board the rest of the game in an equal position actually isn...
by Rebel
Fri Jul 20, 2012 5:51 am
Forum: Computer Chess Club: General Topics
Topic: Komodo 5 release now available!
Replies: 157
Views: 44073

Re: Komodo 5 release now available!

If i am wrong i will apologize with Don and larry but i think this version has (if) a very little improvement compared to Komodo 4, i would say around 10 elo. If it is so it is a very sad day for all computer chess lovers and the triumph of Robert Houdart. Best Regards We have MANY tester who have ...
by Rebel
Thu Jul 19, 2012 8:36 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Komodo 5 running for the IPON
Replies: 39
Views: 6647

Re: Komodo 5 running for the IPON

Komodo 5 Komodo 5 - Houdini 2.0 STD (3028) 12.5 - 12.5 50.00% Perf=3028 Komodo 5 - Critter 1.6a (2973) 15.0 - 10.0 60.00% Perf=3043 Komodo 5 - Stockfish 2.2.2 JA (2966) 12.5 - 11.5 52.08% Perf=2980 Komodo 5 - Deep Rybka 4.1 (2956) 14.0 - 10.0 58.33% Perf=3014 Komodo ...
by Rebel
Sun Jul 15, 2012 4:41 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: The value of an evaluation function
Replies: 16
Views: 4971

Re: The value of an evaluation function

Has anyone done a similar experiment for his EVAL? I found quite a couple of surprises. http://www.top-5000.nl/eval.htm c) The incredible low impact of Pawn Eval (double pawns, isolated pawns, backward pawns, pawn pressure, pawn formation) of only 2%, see match 2.4 contrary to passed pawn EVAL (13....
by Rebel
Sat Jul 14, 2012 12:57 pm
Forum: Computer Chess Club: General Topics
Topic: The Internet World Computer Chess Championship
Replies: 127
Views: 31358

Re: The Internet World Computer Chess Championship

I fully support your initiative Peter, bravo. It takes a lot of courage to stand up against a group of angry programmers who are using the ICGA verdict as a stick to beat and to exclude the strongest (and fruit-free) chess entity on the Planet from participation in all eternity. More power to you fo...