Search found 16 matches

by pkappler
Tue Mar 05, 2013 10:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Transposition table usage in quiescent search?
Replies: 68
Views: 11709

Re: Transposition table usage in quiescent search?

Hi, I was wondering whether the transposition (or hash) table should be used in the quiescent search, to cutoff already searched positions as well as to store the result. I see that Stockfish does it. I tried a simple implementation, just store all q-search results and returning the hash value if I...
by pkappler
Sun Mar 03, 2013 3:35 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Transposition table usage in quiescent search?
Replies: 68
Views: 11709

Re: Transposition table usage in quiescent search?

Hi, I was wondering whether the transposition (or hash) table should be used in the quiescent search, to cutoff already searched positions as well as to store the result. I see that Stockfish does it. I tried a simple implementation, just store all q-search results and returning the hash value if I...
by pkappler
Sun Feb 24, 2013 1:07 am
Forum: Computer Chess Club: General Topics
Topic: Xboard 4.7.0 and earlier logos on OSX
Replies: 26
Views: 2238

Re: Xboard 4.7.0 and earlier logos on OSX

Speaking of Xboard 4.7.0 and OSX, is there a pre-built binary I can download? I tried building from source, but OSX 10.8 doesn't include automake, autoconf, aclocal, etc. :( Get what you need at MacPorts and then build from source. Thanks. I found an old XBoard 4.6.2. binary. That'll do for now - I...
by pkappler
Sat Feb 23, 2013 10:14 pm
Forum: Computer Chess Club: General Topics
Topic: Xboard 4.7.0 and earlier logos on OSX
Replies: 26
Views: 2238

Re: Xboard 4.7.0 and earlier logos on OSX

Speaking of Xboard 4.7.0 and OSX, is there a pre-built binary I can download? I tried building from source, but OSX 10.8 doesn't include automake, autoconf, aclocal, etc. :(
by pkappler
Sun Jun 10, 2012 9:40 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Easy engine to use for testing
Replies: 46
Views: 9269

Re: Easy engine to use for testing

Yes, never underestimate the power of bug fixing. You would be very surprised how buggy an engine can be and still play legal, and even most of the time reasonable, moves. Be sure you are doing alpha-beta with null window and re-search, null move, and hash table probing completely correctly (or if ...
by pkappler
Sat Jul 30, 2011 3:56 am
Forum: Computer Chess Club: General Topics
Topic: Computer Chess - the movie
Replies: 52
Views: 14790

Re: Computer Chess - the movie

Steve B Who is Fern? Thanks. I am from Alabama so will be contacting Bob Hyatt-thanks for that. Hi Houston, Just an FYI - I contacted Bob last week and asked him if he would consult on the movie. He agreed, and I put him in touch with one of the lead actors (who also happens to be a computer scienc...
by pkappler
Tue Feb 01, 2011 3:52 am
Forum: Computer Chess Club: General Topics
Topic: CCT13, was this a win on time or d/c?
Replies: 4
Views: 800

Re: CCT13, was this a win on time or d/c?

Not sure where you found that PGN, but it's missing almost half of the moves. Here's the complete game: [Event "CCT 13"] [Date "2011.01.29"] [Round "4"] [White "Chirone"] [Black "SjengX"] [TimeControl "3000+3"] [Result "0-1"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8...
by pkappler
Wed Nov 17, 2010 8:27 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: WinBoard protocol extension proposal: exclude moves
Replies: 17
Views: 2715

Re: WinBoard protocol extension proposal: exclude moves

I'd much rather specify the moves I want to search than the moves I want to exclude. But WinBoard protocol already has a command for that: "usermove XXX". That makes the engine search that move. Are you suggesting that the Winboard equivalent to 'searchmoves a b c' is 'usermove a', 'usermove b', 'u...