Search found 1117 matches

by Gian-Carlo Pascutto
Wed Sep 25, 2019 9:26 am
Forum: Computer Chess Club: General Topics
Topic: My failed attempt to change TCEC NN clone rules
Replies: 92
Views: 8256

Re: My failed attempt to change TCEC NN clone rules

My argument is that I don't see the difference between basing a program on Alpha Zero and renaming it Leela Leela Zero was named "Leela" Zero because it was based on Leela's code. A program that already existed since ~2008. It used the method from the Alpha "Zero" paper and that's indeed where the ...
by Gian-Carlo Pascutto
Mon Sep 23, 2019 9:32 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: top engines vs 2400 engine knight odds matches
Replies: 16
Views: 1986

Re: top engines vs 2400 engine knight odds matches

My first thought was that perhaps it is due to the training setup not having any way to arrive in these kind of "opening but immediately 2 knights down" situations, combined with a failure of the network to generalize. But it happens in middlegame positions too. [D}r1b2rk1/pp1nqppp/2p5/4p3/3P4/2R1P3...
by Gian-Carlo Pascutto
Mon Sep 23, 2019 7:11 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: top engines vs 2400 engine knight odds matches
Replies: 16
Views: 1986

Re: top engines vs 2400 engine knight odds matches

The eval should be something like twice as bad when down two knights as when down one. The version I tested of your engine thinks it's actually better to be down two knights than one knight!! The raw eval in the starting position is allright (-1.6 vs -2.4). I wonder if it gets confused wrt developm...
by Gian-Carlo Pascutto
Mon Sep 23, 2019 4:55 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: top engines vs 2400 engine knight odds matches
Replies: 16
Views: 1986

Re: top engines vs 2400 engine knight odds matches

Thanks. Unfortunately it is just as hopeless at giving knight odds as the newer Lc0 networks are, they both just give away pieces almost as if they were playing giveaway chess. It's easy to see the reason: the eval for queen odds is less negative than the eval for pawn and two move odds (remove f7,...
by Gian-Carlo Pascutto
Mon Sep 23, 2019 2:42 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Syzygy DTZ data explaination?
Replies: 9
Views: 1757

Re: Syzygy DTZ data explaination?

Fathom ranks (and scores) all winning moves the same unless the probe code indicates the position has been repeated (i.e. that the engine is failing to make progress by itself).
by Gian-Carlo Pascutto
Mon Sep 23, 2019 2:41 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: top engines vs 2400 engine knight odds matches
Replies: 16
Views: 1986

Re: top engines vs 2400 engine knight odds matches

You can try this with Stoofvlees as well (you should have a copy). I expect it to do even better than lc0. I've been too busy to check it out, but since you made this comment I'm motivated to check it out next week when I should have time. Is this the chess analog of the Leela Go situation where th...
by Gian-Carlo Pascutto
Thu Sep 19, 2019 10:21 pm
Forum: Computer Chess Club: General Topics
Topic: Allie is very attractive
Replies: 2
Views: 518

Re: Allie is very attractive

The original lc0 and Komodo 13 also play Ke2 here. As does Stoofvlees.

Doesn't seem hard to find.
by Gian-Carlo Pascutto
Thu Sep 19, 2019 9:47 pm
Forum: Computer Chess Club: General Topics
Topic: Will TCEC need to rewrite their rules?
Replies: 13
Views: 2956

Re: Will TCEC need to rewrite their rules?

Tablebases (and the associated access code) are considered an exception for very practical reasons. If using the third-party access code wasn't allowed, then every author who wanted to use EGTB would have to invent their own format (as Syzygy for example has no formal specification that you could pr...
by Gian-Carlo Pascutto
Thu Sep 19, 2019 8:35 pm
Forum: Computer Chess Club: General Topics
Topic: Some speed tests with Leela and Allie
Replies: 7
Views: 540

Re: Some speed tests with Leela and Allie

Why you think that in the case of given Net and given binary there is no any connection between speed and the chess power? Because the speed changes if you change the cache size (reason, see previous post). (There's still a positive correlation in the general case, but you can come up with patholog...
by Gian-Carlo Pascutto
Thu Sep 19, 2019 8:31 pm
Forum: Computer Chess Club: General Topics
Topic: My failed attempt to change TCEC NN clone rules
Replies: 92
Views: 8256

Re: My failed attempt to change TCEC NN clone rules

the poster child of boom bust AI investment development cycle. Each boom has been accompanied propaganda-wise on dreams of “well if they can beat humans in chess ...” and each bust on failure to actually deliver on the dreams. So, I would posit, computer chess is about bullshit also. Extracting cop...