Search found 633 matches

by Joerg Oster
Sat Jul 21, 2018 9:18 am
Forum: Computer Chess Club: General Topics
Topic: SF groaned and moaned to find a mate in 10 on a sparse board.
Replies: 9
Views: 10929

Re: SF groaned and moaned to find a mate in 10 on a sparse board.

Takes SF 64 plies to find this mate in 10. About four and a half minutes with 11 threads. Of course, due to SMP variance, I would expect other solution times to differ a lot. Searching: 2N5/p7/P7/8/1KPp1p1p/3p1Bpp/3P2rq/R5bk w - - 0 1 infinite: 0 time: 0 increment: 0 moves to go: 0 1 +0.00 00:00 93...
by Joerg Oster
Thu Jul 19, 2018 8:53 am
Forum: Computer Chess Club: General Topics
Topic: Interesting mate in 15
Replies: 10
Views: 1056

Re: Interesting mate in 15

8/6p1/1pp5/k7/1p6/1P6/6pK/6Qb w - - bm Qa1+; acd 42; acs 557; bm Qa1+; ce 32738; dm 15; id "yacpdb id 329478"; pm Qa1+; pv Qa1+ Kb5 Kg1 g6 Qh8 Ka6 Qa8+ Kb5 Qa1 g5 Qh8 Ka6 Qa8+ Kb5 Qa1 g4 Qh8 Ka6 Qa8+ Kb5 Qa1 g3 Qh8 Ka6 Qa8+ Kb5 Qa1 Kc5 Qe5+; It is easy to find mate, and even the key move. Finding m...
by Joerg Oster
Wed Jul 18, 2018 9:27 am
Forum: Computer Chess Club: General Topics
Topic: TCEC should reconsider the ban on Ethereal
Replies: 22
Views: 3573

Re: TCEC should reconsider the ban on Ethereal

I don't know anything about what happened but I'm guessing that Knight_Moves was the one trying to ban Andrew Grant because this morning when I go to the TCEC website I'm confronted with the crappy old GUI. Knight_Moves is obviously protesting against his decision being overturned by leaving and ta...
by Joerg Oster
Fri Jul 06, 2018 8:36 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish's Asymmetric Evaluations
Replies: 15
Views: 1418

Re: Stockfish's Asymmetric Evaluations

If you are analyzing rather than game playing, make sure that you set the contempt to zero. There is a built in offset for the side to move, otherwise. Please note, even if you do this, you only deactivate static contempt. Dynamic contempt (based upon the current best score) will still get applied ...
by Joerg Oster
Wed Jul 04, 2018 7:47 am
Forum: Computer Chess Club: General Topics
Topic: forced mate test position
Replies: 4
Views: 458

Re: forced mate test position

how much time does your program need to find forced mates? stockfish 3 cores 1024 mbytes 3qk2r/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQk - 0 1 My Stockfish Mod, with 3 Threads and 1024 MB Hash, announces first mate score after 4:13 at depth 29, and mate in 18 after 7:53 at depth 34. info depth 28 seldepth ...
by Joerg Oster
Wed May 16, 2018 8:31 pm
Forum: Computer Chess Club: General Topics
Topic: Komodo 12 and MCTS
Replies: 178
Views: 26573

Re: Komodo 12 and MCTS

Isn't a bug?! Is it expected behavior? Komodo's causing his computer to freeze, that's a serious bug. Just a bit of clarification. The engine freezes and causes the GUI to stop giving information. The PC is still responding. Cheers, Kaj It seems odd to me that the GUI would stop working. Nothing we...
by Joerg Oster
Tue May 15, 2018 12:02 pm
Forum: Computer Chess Club: General Topics
Topic: Komodo 12 and MCTS
Replies: 178
Views: 26573

Re: Komodo 12 and MCTS

b) MCTS better against humans. I bet standard komodo is much better against computers, humans and cockroaches c) MCTS better in multi-pv mode, I highly doubt it Daniel Awesome Post. Ruthless Dissection. Game, Set and Match ! :lol: Just to address two points (many of the others were just speculation...
by Joerg Oster
Mon May 14, 2018 11:03 am
Forum: Computer Chess Club: General Topics
Topic: Komodo 12 and MCTS
Replies: 178
Views: 26573

Re: Komodo 12 and MCTS

Why would the MCTS benefit from using the GPU? The "Why" I wouldn't know, not being a Programmer. What I DO know is that AlphaZero used TPUs while thrashing Stockfish and that the GPU version of LCZero is much stronger than the CPU version. Then why do you say it's pointless to not utilizing the GP...
by Joerg Oster
Mon May 14, 2018 10:08 am
Forum: Computer Chess Club: General Topics
Topic: Komodo 12 and MCTS
Replies: 178
Views: 26573

Re: Komodo 12 and MCTS

Otherwise they'll be selling an early prototype that will soon become outdated. Pointless having MCTS option when its unable to use the power of the GPU or of Tensor Processing Units. Sorry, but the simple truth is that this is just a Sales Gimmick by the Komodo team trying to take advantage of the...
by Joerg Oster
Sat May 12, 2018 7:36 pm
Forum: Computer Chess Club: General Topics
Topic: cutechess-cli?
Replies: 11
Views: 1145

Re: cutechess-cli?

Thanks for all the tips! I got it working with concurrency in the GUI, and also with the -ratinginterval N command I get to see more output in the command line interface version. I have one more question: I'm running a gauntlet match of my engine against 9 opponents, using "work1.pgn" (from Ed Schr...