Search found 46 matches

by jeffreyan11
Sun Aug 20, 2017 9:06 pm
Forum: Computer Chess Club: General Topics
Topic: Laser 1.5 and Ethereal 8.23 (Windows compile)?
Replies: 8
Views: 1355

Re: Laser 1.5 and Ethereal 8.23 (Windows compile)?

Hi Werner,

There is no official Laser 1.5 release. I think there was some confusion and a compile of the latest source code was marked as an official release.

Jeffrey
by jeffreyan11
Tue Jul 11, 2017 2:36 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Looking for dense magics
Replies: 3
Views: 2138

Re: Looking for dense magics

I tried this a while back. I used the same brute force approach, but wrote my own PRNG that biased towards integers I thought would be likely to work as magics. That took a lot of trial and error. I found magics for the squares listed on there very quickly (average 1-2 sec per magic), but never foun...
by jeffreyan11
Fri Jun 23, 2017 7:11 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: search efficiency
Replies: 24
Views: 4398

Re: search efficiency

I wondered exactly the same thing when Laser was 2200-2600 Elo. After trying unsuccessfully to improve search for a while, I focused attention onto eval. Now, the search depths have improved significantly. Part of it was that after improving eval, more aggressive pruning and reductions that didn't w...
by jeffreyan11
Mon Jun 12, 2017 6:28 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Laser 1.4 64-bit Gauntlet for CCRL 40/40
Replies: 2
Views: 486

Re: Laser 1.4 64-bit Gauntlet for CCRL 40/40

Thanks, Graham! I'm happy with the progress :)
by jeffreyan11
Sat May 13, 2017 1:40 am
Forum: Computer Chess Club: General Topics
Topic: Laser 1.4 Release
Replies: 11
Views: 3513

Re: Laser 1.4 Release

Hi Graham,

Thanks for letting me know. I will try to fix it for the next release if the problem isn't too severe.

Jeffrey
by jeffreyan11
Fri May 12, 2017 7:35 pm
Forum: Computer Chess Club: General Topics
Topic: Laser 1.4 Release
Replies: 11
Views: 3513

Re: Laser 1.4 Release

Hi Wolfgang,

You are correct, Laser does not have ponder ability yet. I will work on adding this for the next release.
by jeffreyan11
Thu May 11, 2017 9:34 am
Forum: Computer Chess Club: General Topics
Topic: Laser 1.4 Release
Replies: 11
Views: 3513

Re: Laser 1.4 Release

Thanks!

I have added a BMI2 compile - hopefully it is actually faster (I haven't tested).

Jeffrey
by jeffreyan11
Thu May 11, 2017 9:00 am
Forum: Computer Chess Club: General Topics
Topic: Laser 1.4 Release
Replies: 11
Views: 3513

Laser 1.4 Release

Laser 1.4 has now been released and is available at https://github.com/jeffreyan11/uci-chess-engine/releases/tag/v1.4 Self-play regressions: +86 in 8000 games at 3+0.02 +108 in 4000 games at 15+0.05 Estimated CCRL elo is 3020 Major changes: Multiple bugfixes (Syzygy, UCI parsing, eval) Add countermo...
by jeffreyan11
Fri Feb 03, 2017 11:53 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Laser 1.3 64-bit Gauntlet for CCRL 40/40
Replies: 3
Views: 693

Re: Laser 1.3 64-bit Gauntlet for CCRL 40/40

No worries! I also overestimated the strength somewhat.