Search found 1398 matches

by Ajedrecista
Mon Jul 25, 2011 7:22 pm
Forum: Computer Chess Club: General Topics
Topic: OTB human test positions
Replies: 26
Views: 4449

Re: OTB human test positions

Hello: Intel Pentium D930 (Dual Core). Infinite analysis (without Multi PV) by Houdini 1.5a w32 (with 1024 MB of hash): FEN: r1b1r1k1/p2q1ppp/np2n3/3p1NBQ/8/6PB/P4P1P/1R2R1K1 w - - 0 1 Houdini_15a_w32: 4/17 00:01 2.324 0 -0,32 Bg5e3 Na6c5 Bh3f1 Bc8a6 Bf1xa6 Nc5xa6 5/17 00:01 4.402 275.000 -0,32 Bg5e...
by Ajedrecista
Mon Jul 25, 2011 6:49 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft(13) betting pool
Replies: 576
Views: 715307

Re: Perft(13) betting pool

Hi again: I will use some numbers that were posted here: http://talkchess.com/forum/viewtopic.php?topic_view=threads&p=416331&t=39678 Sorry for insisting so much with my polynomial extrapolation. I have done linear extrapolation (instead of quadratic) for Perft(11) estimate, to see if increasing (or...
by Ajedrecista
Sun Jul 24, 2011 7:31 pm
Forum: Computer Chess Club: General Topics
Topic: Some news about Houdini 2.0
Replies: 18
Views: 7377

Re: Some news about Houdini 2.0

Hello Mr. Houdart: First of all, thank you very much for keeping free your engines Houdini 1.5 and Houdini 1.5a. I hope both search and eval will be improved (if possible), because I have read more than once that Houdini 1.5 (and 1.5a, of course) tends to overestimate own Q against 2R in some positi...
by Ajedrecista
Sun Jul 24, 2011 6:14 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft(13) betting pool
Replies: 576
Views: 715307

Re: Perft(13) betting pool

Hi Mr. Muller: First of all, I want to congratulate you and the rest of people that are doing astonishing estimates with superb methods. Secondly, I do not understand the method you propose in your post (I am not so clever and please do not waste time trying to explain it to me). But reading it, the...
by Ajedrecista
Sat Jul 23, 2011 8:09 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft(13) betting pool
Replies: 576
Views: 715307

Re: Perft(13) betting pool

Hello people: I have tried my idea with lower plies (n = 9, 11) for seeing if the numbers that I calculate are right or wrong. They are wrong (did anybody doubt it?), but they are wrong in less than 0.3%! First I start with Perft(9) and then Perft(11). Keep in mind that all is made by hand (with the...
by Ajedrecista
Fri Jul 22, 2011 3:22 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft(13) betting pool
Replies: 576
Views: 715307

Re: Perft(13) betting pool

Hi Daniel: There is not a real formula: I visited François Labelle's web, and when I saw one of his graphs (the one with logarithmic scale that data suit in a line) one kind of inspiration came to me (not joking) and I started to calculate some ratios. The one that I finally used was: {log[Perft(n)]...
by Ajedrecista
Fri Jul 22, 2011 11:15 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft(13) betting pool
Replies: 576
Views: 715307

Re: Perft(13) betting pool

Hi again: There is a typo in both PDF's I uploaded: 'alpha(n) > beta(n)' is wrong; right is: '|alpha(n)| > |beta(n)|' (with absolute values). This typo does not change my final estimate: Perft(13) ~ 1.980465e+18 ± 0.013% . I will not upload another PDF (two are enough, IMO). I include this correctio...
by Ajedrecista
Wed Jul 20, 2011 4:44 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft(13) betting pool
Replies: 576
Views: 715307

Re: Perft(13) betting pool

Hi everyone! I also made my own estimate on Perft(13) because it seems that everybody has made his/her own one! I am not so smart for thinking in methods like Muller, Blass/Schüle, Shawul or Österlund (for example), so my estimate is another Hocus-Pocus: my number is, more less: 1.980465·10^(18) ± 0...