Search found 270 matches

by Arpad Rusz
Thu Mar 14, 2019 12:46 am
Forum: Computer Chess Club: General Topics
Topic: statistics about mates from tablebases
Replies: 3
Views: 702

Re: statistics about mates from tablebases

I can find the double mates with the help of SEE but only if both moves are the only winning moves. So your KQvKQ example is missing from this list (176 positions) because of the dual win 1.Kb3+. 8/8/8/8/q7/k7/5Q2/K7 w - - 0 1 8/8/1Q6/8/8/8/8/K1kq4 w - - 0 1 8/8/8/8/q7/k7/5Q2/1K6 w - - 0 1 8/8/8/8/q...
by Arpad Rusz
Sat Mar 09, 2019 7:03 am
Forum: Computer Chess Club: General Topics
Topic: Syzygy Endgame Explorer (SEE)
Replies: 0
Views: 541

Syzygy Endgame Explorer (SEE)

My tool for "mining" Syzygy Tablebases is about to be released:
http://ruszchessstudies.blogspot.com/20 ... first.html
by Arpad Rusz
Tue Dec 11, 2018 7:25 pm
Forum: Computer Chess Club: General Topics
Topic: Is this study correct?
Replies: 8
Views: 1526

Re: Is this study correct?

Thanks! I am preparing this study (and other 5 ones) for the World Championship so its soundness is very important for me.
by Arpad Rusz
Fri Nov 30, 2018 8:14 pm
Forum: Computer Chess Club: General Topics
Topic: Another "Brain Cramp for SF" position
Replies: 49
Views: 7973

Re: Another "Brain Cramp for SF" position

The author is A. Kazantsev. [pgn][Event "1.hm Shakhmaty v SSSR#26 @3"] [Site "?"] [Date "1959.??.??"] [Round "?"] [White "Kazantsev=A"] [Black "(+3032.65h5h7)"] [Result "1-0"] [SetUp "1"] [FEN "8/1p1pNpbk/q2P4/p3p2K/PP2N3/4P1P1/3P4/8 w - - 0 1"] [PlyCount "37"] [EventDate "1959.??.??"] {HHdbV#52660}...
by Arpad Rusz
Mon Nov 26, 2018 12:25 pm
Forum: Computer Chess Club: General Topics
Topic: Is this study correct?
Replies: 8
Views: 1526

Is this study correct?

Could you help me to check the correctness of this study? Is the initial position a win at all? If yes, are there any alternative winning moves for white at some point? Thanks! [pgn][Event "Joita MT (1st Honourable Mention)"] [Site "?"] [Date "2018.??.??"] [Round "?"] [White "Rusz, Árpád"] [Black "?...
by Arpad Rusz
Mon Aug 27, 2018 8:45 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 588
Views: 136577

Re: 7-men Syzygy attempt

Here you can find some lists of 7-man mutual zugzwangs:
http://ruszchessstudies.blogspot.com/20 ... wangs.html
by Arpad Rusz
Sat Jun 16, 2018 10:47 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 588
Views: 136577

Re: 7-men Syzygy attempt

I have started to develop a software for mining the new 7-man Syzygy tablebases. http://ruszchessstudies.blogspot.com/2018/06/syzygy-endgame-explorer-see.html For now, it is just a command line tool (actually it is a Stockfish engine with some additional UCI commands) but I plan to add a specialized...
by Arpad Rusz
Sat May 26, 2018 7:40 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 588
Views: 136577

Re: 7-men Syzygy attempt

Thanks, now it is fixed. I have added the RPP line.
I will be great to finally have the RPP/RP tablebase, and RPP/QP will be important to avoid some fortresses.
by Arpad Rusz
Thu May 24, 2018 8:48 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 588
Views: 136577

Re: 7-men Syzygy attempt

The end of the story is that to get KPPPvKPP, you need all other 4v3 tables first. So that's what being worked on. Yes, I know how it works, I myself have written a tablebase generator for a chess variant. :) Of course, is it desirable to have the complete set, and I plan to get it someday. But for...
by Arpad Rusz
Thu May 24, 2018 12:53 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 588
Views: 136577

Re: 7-men Syzygy attempt

Also, this surely makes no sense. KPPPvKPP has material difference 1 in your table, and KPPPvKQP has material difference 8. According to your logic of ignoring everything with material differences larger than 5, you should keep KPPPvKPP, and then once the first pawn promotes, you're out of tablebas...