Search found 1928 matches

by peter
Sun Jul 05, 2020 7:21 am
Forum: Computer Chess Club: General Topics
Topic: XI-r3 Release
Replies: 18
Views: 653

Re: XI-r3 Release

MikeB wrote:
Sat Jul 04, 2020 6:16 am
All flavors available for Windows, Linux and macOS.
Thanks a lot!
Modern Windows compiles work well with Win7x64Pro.
by peter
Sun Jul 05, 2020 6:31 am
Forum: Computer Chess Club: General Topics
Topic: Hard Position Revisted
Replies: 1
Views: 71

Re: Hard Position Revisted

MikeB wrote:
Sun Jul 05, 2020 5:13 am
Looks like f4 and Bd1 both win ...
That's a study from Ladislav Salai Jr. and it's a known dual.
by peter
Sat Jul 04, 2020 6:08 am
Forum: Computer Chess Club: General Topics
Topic: Test position: Lc0 vs Stockfish, TCEC 18, game 65
Replies: 28
Views: 1139

Re: Test position: Lc0 vs Stockfish, TCEC 18, game 65

I have code so tactical , presearch and profound do not at play together all at the same time, since the results are undesirable examples if (mpv > 1) profound = false; if (!tactical && profound) yada yada if (tactical) { multiPV = pow(2, tactical); profound = false; } tactical and mutlipv can play...
by peter
Fri Jul 03, 2020 7:51 pm
Forum: Computer Chess Club: General Topics
Topic: BrainLearn
Replies: 89
Views: 13610

Re: BrainLearn

[What is Q-learning? I never heard of it before. https://groups.google.com/forum/#!topic/fishcooking/6IzmiSCB8lg Thanks for the link, Andrea, interesting stuff. If I may ask another question again, what does Q-learning do with existing experience- files generated by "Standard" option in new BrainLe...
by peter
Fri Jul 03, 2020 7:35 pm
Forum: Computer Chess Club: General Topics
Topic: BrainLearn
Replies: 89
Views: 13610

Re: BrainLearn

[What is Q-learning? I never heard of it before. https://groups.google.com/forum/#!topic/fishcooking/6IzmiSCB8lg Thanks for the link, Andrea, interesting stuff. If I may ask another question again, what does Q-learning do with existing experience- files generated by "Standard" option in new BrainLe...
by peter
Fri Jul 03, 2020 7:14 pm
Forum: Computer Chess Club: General Topics
Topic: BrainLearn
Replies: 89
Views: 13610

Re: BrainLearn

[What is Q-learning? I never heard of it before. https://groups.google.com/forum/#!topic/fishcooking/6IzmiSCB8lg Thanks for the link, Andrea, interesting stuff. If I may ask another question again, what does Q-learning do with existing experience- files generated by "Standard" option in new BrainLe...
by peter
Fri Jul 03, 2020 5:42 am
Forum: Computer Chess Club: General Topics
Topic: Test position: Lc0 vs Stockfish, TCEC 18, game 65
Replies: 28
Views: 1139

Re: Test position: Lc0 vs Stockfish, TCEC 18, game 65

MikeB wrote:
Fri Jul 03, 2020 2:40 am
Pro Value is using multipv=8 and...
Thanks for clarifying, didn't know MultiPV to be involved too in presearch.

So if you chose "Tactical" in addition, is then the number of internal primaries of the Tactical- mode (if set higher then 3) presearched with less pruning or yet 8 only still?
by peter
Wed Jul 01, 2020 10:39 pm
Forum: Computer Chess Club: General Topics
Topic: Test position: Lc0 vs Stockfish, TCEC 18, game 65
Replies: 28
Views: 1139

Re: Test position: Lc0 vs Stockfish, TCEC 18, game 65

Komodo-14 with Use LMR set to false. Takes more than 12 minutes to find Qxb4. (And much longer to show a positive score.) info depth 27 time 746743 nodes 23483184798 score cp -1 lowerbound nps 31447478 hashfull 1000 tbhits 0 pv c4b4 e7b4 a3b4 info currmove c4b4 currmovenumber 1 info nodes 234833998...
by peter
Wed Jul 01, 2020 8:24 pm
Forum: Computer Chess Club: General Topics
Topic: Test position: Lc0 vs Stockfish, TCEC 18, game 65
Replies: 28
Views: 1139

Re: Test position: Lc0 vs Stockfish, TCEC 18, game 65

Hi Louis! That's very fast! I haven't studied the code, but I'm guessing that much less LMR is being applied. Now that I'm curious, let me try Komodo with LMR totally disabled... Schwabli (my chess- PC) is busy right now, so I'm curious for your results. As for Michael Byrne's r- versions, there is ...
by peter
Wed Jul 01, 2020 5:28 pm
Forum: Computer Chess Club: General Topics
Topic: Test position: Lc0 vs Stockfish, TCEC 18, game 65
Replies: 28
Views: 1139

Re: Test position: Lc0 vs Stockfish, TCEC 18, game 65

Stockfish-dev does find Qxb4, but it takes a long time. With Pro Value 63 (maximum, game playing mode, TC >20 hours per game): 2rqr1k1/pp1bbp1p/4p1pB/4P3/1nQpN3/P4N2/5PP1/3RR1K1 w - - 0 1 Analysis by Bluefish XI-r2: 21.Nf6+ Bxf6 22.Qxb4 +/- (1.05) Depth: 7/8 00:00:08 439kN 21.Nf6+ Bxf6 22.Qxb4 Bc6 ...