Search found 1392 matches

by Ajedrecista
Fri Jul 29, 2011 3:43 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft(13) betting pool
Replies: 576
Views: 689516

Re: Perft(13) betting pool

Hi Daniel: I took a look on your new method: http://talkchess.com/forum/viewtopic.php?topic_view=threads&p=417149&t=39678 The Perft count seems very good (it almost fits in my new interval (1.9804681 ± 0.0002024)e+18 , which is a total surprise for me!). I have calculated (I hope there are not error...
by Ajedrecista
Thu Jul 28, 2011 4:56 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft(13) betting pool
Replies: 576
Views: 689516

Re: Perft(13) betting pool

Hello to everyone: I redid by hand (only using the calculator of Windows) all the math involving the cubic polynomial adjust of my method because I was afraid that Excel approximations hurted a little my estimate. In fact, range width has been narrowed a little (from ~ |±0.013%| to ~ |±0.01022%|), s...
by Ajedrecista
Tue Jul 26, 2011 7:59 pm
Forum: Computer Chess Club: General Topics
Topic: couple of nice sacs from WCRCC
Replies: 5
Views: 1021

Re: couple of nice sacs from WCRCC

Hello Jon: The second position reminds me a lot the first position of Nolot test: http://en.wikipedia.org/wiki/Nolot They are not the same, but a lot of pieces are in same squares, and the star move is also the same: Nxh6!! Long time ago, first position of Nolot was very hard for engines, but now is...
by Ajedrecista
Tue Jul 26, 2011 5:28 pm
Forum: Computer Chess Club: General Topics
Topic: OTB human test positions
Replies: 26
Views: 4121

Re: OTB human test positions

Hi everybody: The position is taken of Shirov - Carlsen of today, but instead of playing 44.- Qd5, I played 'my line', just for curiosity: 44.- Qxc3, Qxd7; 45.- Qxc4, Rc8 (I wanted to trade queens); 46.- Qd3, Qxd3; 47.- Bxd3, ... and here is the position. [d] 2r3k1/5p2/6pp/8/4P3/3BP1P1/5K1P/8 b - - ...
by Ajedrecista
Mon Jul 25, 2011 7:22 pm
Forum: Computer Chess Club: General Topics
Topic: OTB human test positions
Replies: 26
Views: 4121

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: 689516

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: 7047

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: 689516

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: 689516

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: 689516

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)]...