Search found 891 matches

by chrisw
Thu May 28, 2020 9:32 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PGN standard
Replies: 37
Views: 1098

Re: PGN standard

Personally, I am a fan of SAN and always have been. It's the way things are written in chess books, game scores by humans, etc. It reads much more naturally to me (as a human). I didn't find it difficult to parse although a move generator is needed. It is needed in a chess engine anyway, so that is...
by chrisw
Thu May 28, 2020 11:58 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Extracting quiet positions?
Replies: 12
Views: 420

Re: Extracting quiet positions?

Hello, I'm looking for ways to extract quiet positions from an epd file while preserving existing comments, bestmove, etc., information. I have a few million positions and just need to get rid of the noisiest ones. Are there any scripts or programs to do this? If not, does anyone have recommendatio...
by chrisw
Wed May 27, 2020 2:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Rolling dice
Replies: 6
Views: 179

Re: Rolling dice

How are 'manual rolls already implemented' if there is no protocol for it? You wrote: GUIs so far only offered the possibility to either let the engine simulate a virtual dice roll, or have it ask for the human opponent to roll a physical die, and enter the result. How can GUIs offer manual rolls i...
by chrisw
Tue May 26, 2020 6:36 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Extracting quiet positions?
Replies: 12
Views: 420

Re: Extracting quiet positions?

Hello, I'm looking for ways to extract quiet positions from an epd file while preserving existing comments, bestmove, etc., information. I have a few million positions and just need to get rid of the noisiest ones. Are there any scripts or programs to do this? If not, does anyone have recommendatio...
by chrisw
Tue May 26, 2020 12:11 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Extracting quiet positions?
Replies: 12
Views: 420

Re: Extracting quiet positions?

Hello, I'm looking for ways to extract quiet positions from an epd file while preserving existing comments, bestmove, etc., information. I have a few million positions and just need to get rid of the noisiest ones. Are there any scripts or programs to do this? If not, does anyone have recommendatio...
by chrisw
Sun May 17, 2020 7:08 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney May
Replies: 25
Views: 979

Re: On-line engine blitz tourney May

We're thinking about running the next tourney for 11 rounds, maybe this is objectionable for some people? At 4+1 say instead of 5+1 ? Computers are getting faster each time, 11 rounds 4-1 sounds like a good possibility, it won't diminish the level of play. I will talk about it with Liesebeth, she i...
by chrisw
Sun May 17, 2020 7:04 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: How do you fix this.
Replies: 11
Views: 542

Re: How do you fix this.

lauriet wrote:
Sat May 16, 2020 10:17 pm
I do, and the program avoids it for a while but eventually fails.....
Maybe I should check the 3 fold code.
Hmm ?
Why 3-fold in the tree? 2-fold is enough
by chrisw
Sat May 16, 2020 7:14 am
Forum: Computer Chess Club: General Topics
Topic: Earliest chess engines that have features of AB pruning?
Replies: 5
Views: 423

Re: Earliest chess engines that have features of AB pruning?

I wanna know some evidence as I had an argument with someone! My assumption was approximately 15 years ago, may be in crafty by Robert Hyatt. I also think that early engines like the king (chess master 6000) did not have AB pruning! For chess engines using microprocessors since about 1980, all exce...
by chrisw
Sun May 03, 2020 11:29 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Request for InDoubleCheck PERFTS EPDs
Replies: 6
Views: 846

Re: Request for InDoubleCheck PERFTS EPDs

Ferdy wrote:
Sun May 03, 2020 9:43 am
This one is different, the side to move can play e.p capture. Also randomly checked with Crafty.
https://drive.google.com/file/d/1SYkSiP ... sp=sharing
Ok thanks, they're all uploaded to the Github page

https://github.com/ChrisWhittington/Chess-EPDs
by chrisw
Sun May 03, 2020 9:16 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Request for InDoubleCheck PERFTS EPDs
Replies: 6
Views: 846

Re: Request for InDoubleCheck PERFTS EPDs

Ferdy wrote:
Sun May 03, 2020 8:16 am
Nice collection.

Here is the single check pos around 93K.
https://drive.google.com/file/d/14bYuh7 ... sp=sharing
Thanks, got them. Will run a test to compare nodecounts and add them to the github a bit later.