Search found 4017 matches

by syzygy
Sat Aug 24, 2019 4:13 pm
Forum: Computer Chess Club: General Topics
Topic: Where did all these 3400 engines come from?
Replies: 40
Views: 1973

Re: Where did all these 3400 engines come from?

Hello all, I've been getting into computer chess again after a long hiatus due to family responsibilities. Raising 3 children on your own is tough work, so if you had a single Parent at any point in your life, thank them for putting you first before everything. On a side note, where did all these 3...
by syzygy
Wed Aug 14, 2019 8:00 pm
Forum: Computer Chess Club: General Topics
Topic: Does computer chess sponsorship exist?
Replies: 24
Views: 1014

Re: Does computer chess sponsorship exist?

According to talkchess posts, Houdini was sponsored by an Arab Sheikh. I don't have any direct knowledge of that. I thought that was Hydra. They did that one too. Don't think it was Houdini. It was a program by Chrilly Donninger. Houdini has not participated in the usual computer chess tournaments,...
by syzygy
Sun Aug 11, 2019 11:12 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Bitboard logic: identifying 4 squares in a block
Replies: 8
Views: 547

Re: Bitboard logic: identifying 4 squares in a block

The board can be any size? What kind of bitboards are those? Can the code not even assume a particular board size? So I'm not really sure what you mean, but I'll just focus on chess. Shouldn't this work (in SF terminology): bool has_square(bitboard b) { b &= shift<EAST>(b); b &= shift<NORTH>(b); ret...
by syzygy
Sun Aug 11, 2019 7:00 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: SYZYGY question
Replies: 7
Views: 773

Re: SYZYGY question

I have been looking at a quirk for a good while the last couple of days. First, here is the troubling position: [D]8/8/8/kPK5/p7/8/1P6/8 w - - ... What am I doing wrong here or is there a bug in this fairly old code for handling your endgame tables? This dates back to 2016 or so, so anything is pos...
by syzygy
Sun Aug 11, 2019 6:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: SYZYGY question
Replies: 7
Views: 773

Re: SYZYGY question

bob wrote:
Sun Aug 11, 2019 2:21 am
What am I doing wrong here or is there a bug in this fairly old code for handling your endgame tables? This dates back to 2016 or so, so anything is possible.
If I am not mistaken, crafty uses the Fathom library. That's where the bug seems to be. Upgrading that code hopefully will help.
by syzygy
Tue Aug 06, 2019 11:40 pm
Forum: Computer Chess Club: General Topics
Topic: 7 Man Syzygy and SSD
Replies: 73
Views: 11577

Re: 7 Man Syzygy and SSD

By far the majority of the conversions from one EGTB to another occur by a piece being removed from the game due to capture. A quick look at game databases shows something like 85%+ will convert by captures. Just as chess is about reaching a winning pawn endgame, so are pawn endgames about getting ...
by syzygy
Tue Aug 06, 2019 9:34 pm
Forum: Computer Chess Club: General Topics
Topic: 7 Man Syzygy and SSD
Replies: 73
Views: 11577

Re: 7 Man Syzygy and SSD

By far the majority of the conversions from one EGTB to another occur by a piece being removed from the game due to capture. A quick look at game databases shows something like 85%+ will convert by captures. Just as chess is about reaching a winning pawn endgame, so are pawn endgames about getting ...
by syzygy
Mon Aug 05, 2019 10:49 pm
Forum: Computer Chess Club: General Topics
Topic: 7 Man Syzygy and SSD
Replies: 73
Views: 11577

Re: 7 Man Syzygy and SSD

By far the majority of the conversions from one EGTB to another occur by a piece being removed from the game due to capture. A quick look at game databases shows something like 85%+ will convert by captures. Just as chess is about reaching a winning pawn endgame, so are pawn endgames about getting ...
by syzygy
Mon Aug 05, 2019 10:31 pm
Forum: Computer Chess Club: General Topics
Topic: About stockfish's optimizing for bullet
Replies: 10
Views: 1279

Re: About stockfish's optimizing for bullet

I think they should move to standardise at a longer time control. At least give it a try. How can that be given a try? It would mean that vastly fewer tests can be run. Less tests does not mean less elo. I believe it is better to have less tests at longer time control in order to improve long time ...
by syzygy
Sun Aug 04, 2019 2:13 pm
Forum: Computer Chess Club: General Topics
Topic: About stockfish's optimizing for bullet
Replies: 10
Views: 1279

Re: About stockfish's optimizing for bullet

Modern Times wrote:
Sun Aug 04, 2019 2:02 pm
I think they should move to standardise at a longer time control. At least give it a try.
How can that be given a try? It would mean that vastly fewer tests can be run.