Search found 583 matches

by jp
Tue Jul 16, 2019 8:43 pm
Forum: Computer Chess Club: General Topics
Topic: Leela outplays SF Dev in a position that SF evaluates as draw
Replies: 14
Views: 671

Re: Leela outplays SF Dev in a position that SF evaluates as draw

And which Lc0 scoring is this (old or new)? Neither actually , I should have said Leela "like" scoring , but same idea, Scoring %. The Lc0 to centipawn "formula" was reversed engineered and then tweaked so that for my engine , after 1.e4 , the scoring % was just under 55% for white after a 5 minute...
by jp
Tue Jul 16, 2019 7:44 pm
Forum: Computer Chess Club: General Topics
Topic: Leela outplays SF Dev in a position that SF evaluates as draw
Replies: 14
Views: 671

Re: Leela outplays SF Dev in a position that SF evaluates as draw

Not only that , this SF derivative ( with Lc0 scoring ) , at the critical moment, readily sacs the pawn to get in the position and it sees the Ne4 Bxe4 dxe4 Rxe4 f5 maneuver almost instantly: r2q1rk1/pp3p2/1bn2n1p/3p1Bpb/8/1NP2NBP/PP3PP1/R2QR1K1 b - - 1 16 dep score nodes time (not shown: tbhits kn...
by jp
Tue Jul 16, 2019 2:56 pm
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 111
Views: 3377

Re: buying a new computer

Well, you don't really disagree with the statement, either ("no sign so far"). I'd hope they'd get stronger in the endgame & middlegame before they get stronger in the opening. Ok, I'll say it. I disagree! AND I hope NN engines get much stronger in the opening. In fact, I wouldn't mind it if they p...
by jp
Mon Jul 15, 2019 7:19 pm
Forum: Computer Chess Club: General Topics
Topic: Leela outplays SF Dev in a position that SF evaluates as draw
Replies: 14
Views: 671

Re: Leela outplays SF Dev in a position that SF evaluates as draw

Well, what is Lc's evaluation for the position above? Maybe it's also about 0.5-1.0 towards Black. I installed the network 128x10.T17.6-swa-20000. At present, I can only use my CPUs. In any case, here's lc0's output: info depth 23 seldepth 58 time 1557045 nodes 4665017 score cp 48 hashfull 1000 nps...
by jp
Mon Jul 15, 2019 3:05 pm
Forum: Computer Chess Club: General Topics
Topic: Leela outplays SF Dev in a position that SF evaluates as draw
Replies: 14
Views: 671

Re: Leela outplays SF Dev in a position that SF evaluates as draw

Well, what is Lc's evaluation for the position above? Maybe it's also about 0.5-1.0 towards Black.

(They changed the Lc cp evaluation formula. Does anyone know the difference between the old and new?)
by jp
Sat Jul 13, 2019 3:36 pm
Forum: Computer Chess Club: General Topics
Topic: Why there is no interest in Computer with odds Vs Humans match?
Replies: 164
Views: 4386

Re: Why there is no interest in Computer with odds Vs Humans match?

The networks are trained on very fast games, vastly faster than games that would be played at human time limits. So they will play in a way that optimizes win prob. against an opponent much weaker than the level of the network at a realistic time limit. Whether that is above or below the level of N...
by jp
Sat Jul 13, 2019 2:57 pm
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 111
Views: 3377

Re: buying a new computer

There's no sign so far that they'll have any bigger impact on opening theory than traditional engines. So far, it looks like, if left on their own, they are just reproducing old theory with a preference for "safer" openings. I'm not sure I agree with this statement. I don't think NN have been aroun...
by jp
Sat Jul 13, 2019 9:03 am
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 111
Views: 3377

Re: buying a new computer

Heh, recently I was commenting about how someone built a Cluster with that approach in mind, and the Cluster eventually arrived at "1.e4 e5 2.Qf3!?" with its learning and reaching won positions against its opponents, and people were commenting about how sinful that was and about how that variation ...
by jp
Sat Jul 13, 2019 8:05 am
Forum: Computer Chess Club: General Topics
Topic: Why there is no interest in Computer with odds Vs Humans match?
Replies: 164
Views: 4386

Re: Why there is no interest in Computer with odds Vs Humans match?

Perhaps with a sufficiently lost position, the whole concept of evaluating in terms of win probabilities (derived from games where mistakes are made sometimes) is more fruitful than the AB approach of attempting to delay checkmate for as many moves as possible. This will look like a "bluff", but at...
by jp
Fri Jul 12, 2019 6:01 pm
Forum: Computer Chess Club: General Topics
Topic: Why there is no interest in Computer with odds Vs Humans match?
Replies: 164
Views: 4386

Re: Why there is no interest in Computer with odds Vs Humans match?

Swindle or bluffing-mode is one way for the engine to play against the human when giving odds. Playing proper chess in odds matches is likely not the best engine strategy. Well, that's the question. Does that engine (or any other), which of course does not think about what is best for handicap matc...