Search found 805 matches

by JVMerlino
Sun Aug 16, 2020 12:51 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Laziest Lazy SMP
Replies: 12
Views: 2921

Re: Laziest Lazy SMP

Dann Corbit wrote:
Sun Aug 16, 2020 12:39 am
silentshark wrote:
Sat Aug 15, 2020 5:13 pm
So, here's my lazy question, what's the easiest way to create multiple processes and share memory between them, in the world of Windows?
Use CreateProcess.
You can almost simulate a fork with it.
Yep, that's how I did it in my code sample above.
by JVMerlino
Sat Aug 15, 2020 5:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Laziest Lazy SMP
Replies: 12
Views: 2921

Re: Laziest Lazy SMP

With the nasty legacy code I have (lots of global variables etc.), the multiple process approach might be the easiest thing for me to use. So, here's my lazy question, what's the easiest way to create multiple processes and share memory between them, in the world of Windows? And that's exactly the ...
by JVMerlino
Sat Aug 15, 2020 5:02 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Laziest Lazy SMP
Replies: 12
Views: 2921

Re: Laziest Lazy SMP

Results against TSCP: 1 thread on i7-6700 3.40GHz (4 cores) -----------------Plankton64_03----------------- Plankton64_03 - TSCP181c : 84.0/100 75-7-18 (=11=111=101=11=1110=1011111111==0=11111110=11=11=1111=1111=1111111111110111110111==1111=1=1111111111) 84% +288 -----------------TSCP181c----------...
by JVMerlino
Wed Aug 12, 2020 9:33 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Test Position for amateurs, humans, and even some stronger engines
Replies: 8
Views: 1474

Re: Test Position for amateurs, humans, and even some stronger engines

8/3r4/5p2/2k1nQ2/8/3p4/3K4/8 b - - This position came up in Halogen v Myrddin in a CCRL match. There is only one move that wins for Black. Myrddin failed to find it within the time control even with 5-man tablebases. :-( Stockfish-dev with pure NNUE eval (no hybridization) finds the correct move in...
by JVMerlino
Wed Aug 12, 2020 4:59 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Test Position for amateurs, humans, and even some stronger engines
Replies: 8
Views: 1474

Test Position for amateurs, humans, and even some stronger engines



This position came up in Halogen v Myrddin in a CCRL match. There is only one move that wins for Black. Myrddin failed to find it within the time control even with 5-man tablebases. :-(
by JVMerlino
Sat Aug 08, 2020 5:50 pm
Forum: Computer Chess Club: General Topics
Topic: Test Position
Replies: 14
Views: 1541

Re: Test Position

Even The King from CM9000 (of course, with only one thread) can find it in less than a minute: Time Depth Score Positions Moves 0:00 1/3 -3.52 1297 1.Kb1 Kg8 2.c3 0:00 1/3 -3.49 1523 1.a3 Nc6 2.Qxb5 Bxf2 0:00 1/3 -3.45 2262 1.c3 Qc6 2.Kb1 0:00 1/4 -3.26 4564 1.c3 Nxa2+ 2.Kb1 h6 3.Kxa2 hxg5 4.hxg5+ K...
by JVMerlino
Tue Jul 14, 2020 9:15 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney July
Replies: 26
Views: 4914

Re: On-line engine blitz tourney July

Fun tournament, mine was with no opening book, no threads code and came in the bottom half on its first outing, but I quite liked this game (playing white). Not sure how sound was 12 Nxd4, the game flashes by too fast to analyse in real time, but I figured the exchange sac was on the cards at that ...
by JVMerlino
Fri Jul 10, 2020 9:23 pm
Forum: Computer Chess Club: General Topics
Topic: Other fun mates
Replies: 103
Views: 19028

Re: Other fun mates

Too late for black here [d] 8/pppk1p2/4pQ2/1r2P3/3P2p1/1PP2NP1/qn2KPP1/4R3 w - - 0 1 The good ol' King from 2002 sees Mate in 13 in four seconds: Time Depth Score Positions Moves 0:00 1/3 3.82 3528 1.Qxf7+ Kd8 2.Nd2 Qa6 3.Kf1 0:00 1/4 3.83 9522 1.Qxf7+ Kd8 2.Nd2 Qa5 3.Rh1 0:00 1/5 10.56 45935 1.Qxf...
by JVMerlino
Sun Jul 05, 2020 11:50 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Open Swiss Edition III
Replies: 62
Views: 9847

Re: Open Swiss Edition III

It is strange of course, I have analyzed the position in another computer and the first thing Delocto sees is Rf2, then it changes to Qe6 and then it returns to Rf2. Other engines like Komodo don't even contemplate Rf2 at first. Qe6 is definitely the best move. But I can't find any engine that give...
by JVMerlino
Sun Jul 05, 2020 1:17 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Open Swiss Edition III
Replies: 62
Views: 9847

Re: Open Swiss Edition III

I think there is some nasty bug in Delocto. In this position: 6k1/pq2pr1p/3p2pB/4b3/1p4P1/1Q3b2/PPP5/1K1R1R2 w - - 0 26 It played 26.Rf2? with a score of +4.59 at depth 25??? Myrddin happily responded with 26...Bg3 and a draw score. Delocto replied with 27.Rff1 and a score of +5.88! :? Then after 27...