Search found 1396 matches

by Ajedrecista
Sat Dec 23, 2017 6:47 pm
Forum: Computer Chess Club: General Topics
Topic: Chinese Wall test position (hard)
Replies: 1
Views: 711

Re: Chinese Wall test position (hard).

Hello Mike: The problem is uploaded at YACPDB (Yet Another Chess Problem Database): http://yacpdb.org/#278043 Bláthy, Ottó Titusz The Chess Amateur (458) 1921 So I paste the solution given at YACPDB with the intention of getting a sort of backup in the forum: [pgn][Date "1921.??.??"] [Round ...
by Ajedrecista
Sun Nov 05, 2017 3:22 pm
Forum: Computer Chess Club: General Topics
Topic: Tool for splitting white and black moves into diff. files?
Replies: 5
Views: 936

Re: Tool for splitting white and black moves into diff. file

Hello again: [...] After that it was quite easy to acchieve my (current) goal. Great that you managed that! (BTW I always use an old version UltraEdit for regex operations - it's quite good in loading big files and has a lot of options) Just for your information, I use a programme called Find And Re...
by Ajedrecista
Sun Nov 05, 2017 11:51 am
Forum: Computer Chess Club: General Topics
Topic: Tool for splitting white and black moves into diff. files?
Replies: 5
Views: 936

Re: Tool for splitting white and black moves into diff. file

Hello Guenther: Hi Dann, this won't help me, because I am practically only interested in score/depth/time info for each move to follow the right player. The move itself is not interesting for my stats, just the move number. I think Ferdinand once showed an example which had such an output, but this ...
by Ajedrecista
Tue Oct 24, 2017 7:01 pm
Forum: Computer Chess Club: General Topics
Topic: Fishy Bayeselo numbers?
Replies: 4
Views: 1025

Re: Fishy Bayeselo numbers?

Hello: Just my two cents. Indeed, for example, how can a match with final score: 56-44 (+15=82-3), leading to the "usual" (Elostat) +42 Elo difference, gives a measly +15 Elo using the BayesElo computation ! (or does the +15 for the winner, -15 for the loser mean a +30 Elo difference, still quite di...
by Ajedrecista
Thu Oct 12, 2017 4:33 pm
Forum: Computer Chess Club: General Topics
Topic: Nice puzzle and its solution
Replies: 8
Views: 2336

Re: Nice puzzle and its solution.

Hello Volker: Sorry, if this has been posted here before, but I just found it on youtube and I just find it an amazing win for white: [d]3k4/8/7p/2p1p1pP/1pPpPpP1/1P1P1P2/N7/2K5 w - - 0 1 Stockfish hasn't solved it here, but maybe on faster hardware there is a chance. Here is a video in which Simon ...
by Ajedrecista
Sat Aug 26, 2017 6:34 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: perft(15)
Replies: 19
Views: 7412

Re: Perft(15).

Hello Dann: Do you have stored statistics, such as how many mates are in the first 15 ply, how many stalemates, etc.? The current shortest known stalemates are 19-ply stalemates. It was discussed in the following thread: estimating the number of possible stalemates in perft(n) Regarding checks, chec...
by Ajedrecista
Fri Aug 25, 2017 6:56 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: perft(15)
Replies: 19
Views: 7412

Re: Perft(15): comparison of estimates with Ankan's result.

Hello Ankan: I have computed perft(15) of starting position. Any guesses before I post my result? Thank you very much! There is a Perft(15) estimates thread started by Steven: Perft(15) estimates thread There were really good estimates. Here is a summary of the estimates of that thread given in chro...
by Ajedrecista
Fri Aug 04, 2017 5:54 pm
Forum: Computer Chess Club: General Topics
Topic: search bug of stockfish and many programs
Replies: 69
Views: 9762

Re: Search bug of Stockfish and many engines.

Hello: This position offers a good chance to see how much engines prune, if we compare with raw perft values: k1b5/1p1p1p1p/pPpPpPpP/P1P1P1P1/8/8/8/K1B5 w - - 0 1 JetChess 1.0.0.0 perft(1) = 8 perft(2) = 8 perft(3) = 67 perft(4) = 67 perft(5) = 636 perft(6...
by Ajedrecista
Sat Jun 24, 2017 5:52 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Testing A against B by playing a pool of others
Replies: 2
Views: 866

Re: Testing A against B by playing a pool of others.

Hello Andrew: I am not a expert in Statistics, but anyway I will give you my opinion. I have a doubt: since you are using a trinomial model (wins, draws, loses), why do you use the binomial form of the standard deviation instead of the trinomial form? http://centaur.reading.ac.uk/4549/1/2003b_ICGA_J...
by Ajedrecista
Sat May 20, 2017 11:23 am
Forum: Computer Chess Club: General Topics
Topic: Komodo 10.4 is the new Theban Chess Champion.
Replies: 28
Views: 5772

Re: PERFT.

Hello: Here are some higher values of perft for this variant: Stockfish 8 by T. Romstad, M. Costalba, J. Kiiski, G. Linscott position fen 1p6/2p3kn/3p2pp/4pppp/5ppp/8/PPPPPPPP/PPPPPPKN w - - 0 1 perft 8 Position: 1/1 a2a3: 193200262 b2b3: 193379987 c2c3: 193485955 d2d3: 198581534 e2e3: 265684105 f2f...