Search found 1230 matches

by mjlef
Sun May 17, 2020 4:30 pm
Forum: Computer Chess Club: General Topics
Topic: Komodo 14 Armageddon Opening analysis
Replies: 6
Views: 379

Re: Komodo 14 Armageddon Opening analysis

Didn't want to pollute the other thread, so I thought I'd make this specifically about Armageddon. How does it work with opening analysis? I set it to "black must win" and entered in 1.e4 e5 2.Nf3 and let it think. 2...Nc6 was it's top choice, 2...Nf6 kept bouncing between 2nd and 3rd showing about...
by mjlef
Thu May 14, 2020 4:20 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Score "no pawns" question
Replies: 7
Views: 366

Re: Score "no pawns" question

Thanks HG, I'm going to try multiplying the score by 0.5 when there are no pawns and see how it goes. Cheers, Ian The general rule is it the side that is ahead in material, but has has no pawns, then it needs to have 4 pawn units more to win. So things like RR vs NN are mostly wins, but RB vs NN ar...
by mjlef
Thu May 14, 2020 4:06 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Null move in TT
Replies: 6
Views: 395

Re: Null move in TT

Null move causes a beta cut. Can I save anything to the TT ? What move could you save ? You can store it, but at some risk. It would be stored with a value of beta or maybe they null move search result which could be much higher, and as a lower bound. The risk is that if a new beta comes along due ...
by mjlef
Wed May 13, 2020 12:54 am
Forum: Computer Chess Club: General Topics
Topic: Komodo 14 released.
Replies: 48
Views: 4067

Re: Komodo 14 released.

Calling a 10 point rating gain 'significant' when you are talking about moving the needle from say 3400 to 3410 is hyperbole. But we all know that rating gains are hard to come by so I am sure everyone will forgive you for that. I am not sure what to think of Armageddon mode. I can't see any earthl...
by mjlef
Wed May 13, 2020 12:51 am
Forum: Computer Chess Club: General Topics
Topic: Komodo 14 released.
Replies: 48
Views: 4067

Re: Komodo 14 released.

Larry, Is there a chance to get 'Armageddon' to work in MCTS mode at a later date? Thanks I hope to do this in a.future release. The code section in Komodo that handles the MCTS tree needs a bunch of changes to handle proper conversion of draw scores, but I am confident we can do it. Deadlines prev...
by mjlef
Tue Apr 28, 2020 7:48 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Houdini vs Houdidit Swiss Champs 2020...
Replies: 7
Views: 1425

Re: Houdini vs Houdidit Swiss Champs 2020...

What is this Houdidit/Komofish/Stomodo? Somebody managed to get his hands on H5 and H6 source code. Houdini 5 and 6 are based on SF8 but also uses an eval table from Komodo. The funniest thing about it all is that Houdini's displayed node count is its real node count + 1/7*nodes. So yea, Houdini is...
by mjlef
Sun Apr 26, 2020 2:42 am
Forum: Computer Chess Club: General Topics
Topic: Can Komodo 13. for Android beat Shredder 8 on a P.C ?
Replies: 51
Views: 3476

Re: Can Komodo 13. for Android beat Shredder 8 on a P.C ?

Just played this, K13 AB, 8 threads on Moto G6, contempt 200: [Event "Chess for Android Game"] [Site "United States"] [Date "2020.04.25"] [Round "?"] [White "Komodo 13.1 32-bit "] [WhiteElo "-"] [Black "Self"] [BlackElo "-"] [Result "0-1"] [PlyCount "148"] [TimeControl "180+2"] [Device "moto g(6)"]...
by mjlef
Sun Apr 26, 2020 2:10 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Null move
Replies: 5
Views: 938

Re: Null move

As far as I know, I invented this technique. I called it smooth scaling null move at the time. Of course it is possible that someone preceded me with the idea. And the concept is simple enough. If a move looks terrible, we reduce it more. If a move looks good we reduce it less. Actually with nullmo...
by mjlef
Sun Apr 26, 2020 1:59 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Null move
Replies: 5
Views: 938

Re: Null move

So, I've always struggled to get a null move search that gives me positive results. I decided to look at the rules that Stockfish uses and see the following: // Step 9. Null move search with verification search (~40 Elo) 1 if ( !PvNode 2 && (ss-1)->currentMove != MOVE_NULL 3 && (ss-1)->statScore < ...
by mjlef
Wed Apr 22, 2020 12:18 am
Forum: Computer Chess Club: General Topics
Topic: Can Komodo 13. for Android beat Shredder 8 on a P.C ?
Replies: 51
Views: 3476

Re: Can Komodo 13. for Android beat Shredder 8 on a P.C ?

Try with pawn odds. Or play 40'+10" Shredder vs 10"+1" Komodo You got it all wrong Shredder 8 on my system is much much stronger than Komodo 13 on my Samsung Galaxy S8+, Check how deep my Dell All in One Computer can calculate, whereas Komodo does NOT even calculate half af much on my Android. Komo...