Search found 1379 matches

by Ajedrecista
Sat Jun 22, 2019 10:54 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: which engine should win
Replies: 2
Views: 149

Re: Which engine should win?

Hello: which engine should win in a ten game 5 minute blitz tournament: Komodo 13.02, Shashchess 8, Stockfish 10, or SugaR XPro 1.6.1? Every thing is pretty much default; threads = 4. All engines x64. There is a Round-Robin simulator that can simulate the outcome of a Round-Robin tournament with som...
by Ajedrecista
Thu Jun 13, 2019 5:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: max number of pseudo legal move
Replies: 22
Views: 953

Re: Maximum number of pseudo legal moves.

Hello Roland: [...] By the way, the official JetChess web page no longer exists. Would you know another place where one can download it? The web is still reachable with the help of Wayback Machine: https://web.archive.org/web/20171119065123/zipproth.de/jetchess The direct link of the download works ...
by Ajedrecista
Tue Jun 11, 2019 8:58 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: max number of pseudo legal move
Replies: 22
Views: 953

Re: Maximum number of pseudo legal moves.

Hello Mike: [...] Real world, from real games , not proof games, the record as far I know is 79 moves. I performed a search once , using a move generator on 1 million games and found a game with 78 possible moves . I posted the game here, years ago - maybe 10 to 13 years ago. The real game record: h...
by Ajedrecista
Tue May 28, 2019 6:00 pm
Forum: Computer Chess Club: General Topics
Topic: Can't for the life of me find that solution
Replies: 9
Views: 898

Re: Can't for the life of me find that solution

Hello: don't you need depth 48 to find the mate #24 ? It depends on the unit of measure. Usual engines search X depths which means X plies (1 ply = 1 half move), but Chest mate solver has the option of 'SearchDepth n' which means n moves (understanding one move as two plies). In a problem of 'checkm...
by Ajedrecista
Sat May 11, 2019 9:10 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: win-chance for each root move
Replies: 19
Views: 1253

Re: win-chance for each root move

Hello: So 1.Na3 is the best move of all! :lol: I ran a script on 1.5M games and my results look like this: move # white draw black b1a3 72 48.611111% 5.555556% 45.833333% f2f3 162 46.913580% 6.172840% 46.913580% a2a4 160 46.875000% 10.000000% 43.125000% g2g4 1210 46.694215% 11.983471% 41.322314% b2b...
by Ajedrecista
Mon May 06, 2019 6:23 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Time reduction adding a/b to mini/max?
Replies: 9
Views: 659

Re: Time reduction adding a/b to mini/max?

Hello: Not being a programmer, I want to point some things: ------------------------ alpha-beta search with random ordering should take around ((30 - 1 + sqrt(30^2+14*30+1)/4)^6) = 305 million nodes. The expected time taken for alpha-beta given your minimax time of 30 seconds would therefore be (305...
by Ajedrecista
Thu Apr 25, 2019 6:10 pm
Forum: Computer Chess Club: General Topics
Topic: Contrived position for perft
Replies: 15
Views: 1868

Re: Contrived position for perft.

Hello: if my engine is not wrong those are the results: 1: 60 2: 2608 3: 113742 4: 4812099 5: 202902054 6: 8419356881 My perft agrees: FEN string = r3k2r/1bp2pP1/5n2/1P1Q4/1pPq4/5N2/1B1P2p1/R3K2R b KQkq c3 0 1 Depth = 6 Leaf nodes = 8419356881 Time taken = 89945 ms A bit late, but the perft counter ...
by Ajedrecista
Sun Dec 16, 2018 11:09 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: sprt question
Replies: 3
Views: 967

Re: SPRT question.

Hello Marco: hi, I need some help with SPRT. To test my engine I'm using openchess by Andy Grant. I'd like to ply a regression test and openbench uses sprt to stop the games. I don't want to exit from the framework, but I don't wnat that SPRT will stop my game too early, I'm now trying this test: a ...
by Ajedrecista
Fri Nov 16, 2018 4:46 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Any Fortran coder ?
Replies: 26
Views: 3197

Re: Any Fortran coder?

Hello: Friendly greetings ! I'm writing a chess engine (my 1st engine ! yay !), using fortran. I'm not sure which board representation would be a best fit for this language. Techincally, fortran doesn't have uint64_t (only signed) but it should be a very major problem if the bitfield is only used fo...
by Ajedrecista
Wed Nov 14, 2018 7:44 pm
Forum: Computer Chess Club: General Topics
Topic: Is Deep Blue source code open?
Replies: 23
Views: 3211

Re: Is Deep Blue source code open?

Hello: I remember glancing the code ten years back when I was helping Thomas gawk in improving toga eval, I have made a search in Google but I don't find the code, anyway is not worth it. You can find more interesting ideas in whatever up to date engine than in deepblue I thought it just has some hi...