Search found 3232 matches

by Sven
Fri Apr 26, 2019 8:42 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Any news on the Syzygy distance to mate tables?
Replies: 1
Views: 60

Re: Any news on the Syzygy distance to mate tables?

Dann Corbit wrote:
Fri Apr 26, 2019 2:32 am
I remember there was some talk about them some months ago, but I have not heard anything in a long while and I don't see related activity on the github site.
Wasn't it even about DTM50?
by Sven
Sun Apr 21, 2019 2:45 pm
Forum: Computer Chess Club: General Topics
Topic: Contrived position for perft
Replies: 15
Views: 417

Re: Contrived position for perft

How aboud this? [D] r6r/1bp2pP1/R2qkn2/1P6/1pPQ4/1B3N2/1B1P2p1/4K2R b KQ c3 0 It adds pins of the 2 possible kinds: * the normal pin, where from->to causes self-check through the vacated from square. * the en-passant special case, where from->to causes self-check, through the square vacated by the ...
by Sven
Sat Apr 20, 2019 8:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: SMP, game struct, thread struct and MakeMove
Replies: 6
Views: 322

Re: SMP, game struct, thread struct and MakeMove

Do I need a separate Make Move for the game history record? In Jumbo the game history is simply part of the Board object (so "Board" is more like "Game with current position and history"). The small memory overhead is negligible but the gain of simplicity is significant in my view. Each search thre...
by Sven
Fri Apr 05, 2019 8:21 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Jumbo 0.6.96 64-bit Gauntlet for CCRL 40/40
Replies: 16
Views: 857

Re: Jumbo 0.6.96 64-bit Gauntlet for CCRL 40/40

So Sven if you want me to add one more test I can since this is running on a 6 core processor. Just let me know. Sounds interesting, thanks for your tests! If you actually have some spare resources left for another test then I would be interested in something that would allow to compare Jumbo 0.6.9...
by Sven
Fri Apr 05, 2019 6:28 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Jumbo 0.6.96 64-bit Gauntlet for CCRL 40/40
Replies: 16
Views: 857

Re: Jumbo 0.6.96 64-bit Gauntlet for CCRL 40/40

I don't think you can expect LTC results mirror, or even closely follow, those obtained in hyper-bullet tests, Sven. Sometimes they do, other times they don't. Of course I agree. If you're looking for a confirmation of your results our blitz list would be a better place to look. Currently v0.6.96 i...
by Sven
Sat Mar 30, 2019 1:14 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Jumbo 0.6.96 64-bit Gauntlet for CCRL 40/40
Replies: 16
Views: 857

Re: Jumbo 0.6.96 64-bit Gauntlet for CCRL 40/40

Thanks for the tests! When comparing current CCRL Jumbo ratings to my own test results for versions 0.6.* I see some significant differences for 0.6.66 and 0.6.96 which I do not understand. For older Jumbo versions both CCRL and own test ratings are matching pretty well. Here are my relative ratings...
by Sven
Sat Mar 16, 2019 11:09 am
Forum: Computer Chess Club: General Topics
Topic: New Engine: Allie (NN)
Replies: 18
Views: 2615

Re: New Engine: Allie (NN)

When AllieStein played on Div 4 it was not performing as good using the MCTS and without EGTB, but on the second part it switched to A/B search and it won all of its games except one single lost. You mean the engine was changed during the running division? I don't think so, maybe between Div 4's st...
by Sven
Sat Mar 02, 2019 6:48 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 20 New NN Engines has been reported to the TCEC
Replies: 10
Views: 1438

Re: 20 New NN Engines has been reported to the TCEC

The Baron does not use neural nets (yet). The version registered to TCEC is a NUMA aware compile of 3.44 Richard. Is NUMA awareness currently required at TCEC? Condition for required: Running windows with 64+ threads. Without NUMA awareness you can't get optimal thread to CPU distribution. Conditio...
by Sven
Sat Mar 02, 2019 5:13 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 20 New NN Engines has been reported to the TCEC
Replies: 10
Views: 1438

Re: 20 New NN Engines has been reported to the TCEC

pijl wrote:
Sat Mar 02, 2019 4:22 pm
Sven wrote:
Sat Mar 02, 2019 11:40 am
Is NUMA awareness currently required at TCEC?
Required not. Recommended yes, as it is a dual-socket machine.
Ok. Is there a common estimate of the slowdown for a non-NUMA-aware engine on such a machine?
by Sven
Sat Mar 02, 2019 2:01 pm
Forum: Computer Chess Club: General Topics
Topic: Can't beat fairy-max
Replies: 8
Views: 757

Re: Can't beat fairy-max

Henk wrote:
Sat Mar 02, 2019 1:18 pm
No nothing. It only counts passed pawns, weak pawns, space and king position.
[Only checks if weak pawn is blocked by bishop]
Then only fast and deep search can avoid running into that problem in unlike bishop endgames.