Leela Chess Zero Blog
Update
After the restart, the initial training of test20 (from random games) is not working as expected.
Some network properties are not going where we expected them to go (for example, it’s expected that MSE loss would suddenly drop, but it didn’t. Actually, it jumped up instead, can be followed here). Something is wrong with the training, and we are investigating.
As most of you are already aware, Leela will participate in the upcoming season of CCCC!
CCCC (chess.com computer chess competition) is a tournament, where top chess engines compete in a different set of formats, settings and time controls on a high-end hardware. Chess.com did conduct computer chess competitions in the past, but this time CCCC features a really good brand new shiny interface which will make watching it even more fun (and also this is the first time Leela participates there, that also adds fun :-P).
v0.17.0 is out of “release candidate” status, and now is fully released!
Can be downloaded here.
As it has been announced earlier, Leela has a partial endgame tablebase support now.
The support in v0.17.0 is partial only, only WDL tables are probed, but not DTZ. That means, that Leela is only able to query tablebase for positions immediately after captures and pawn moves, and for other positions it has to think by itself.
As you know, we are releasing Lc0 v0.17.0 to participate in the next CCCC
(chess.com computer chess competition) season, which will be the first season
with a new updated design.
This version has support of pondering and partial support of engdames
tablebases, which are going to be useful for CCCC.
The learning rate for the test10 training run has been lowered to 0.0002. Network id 11013 will be the first network trained with the new LR.
This is the last time we lower it for test10 to squeeze some more Elo out of it. It’s expected that the result will be visible within a day or two.
The “Release Candidate 2” for the Lc0 version v0.17 has been published! Available to download here.
We had numerous issues in network encoding in the past, and now after pretty long pause we found yet another one! :)
Turns out, that information about 50-move-no-capture-and-pawn-move-counter was located in wrong place in training data, so networks were trained without that information.
The release candidate of a new version of the Lc0 engine has been released.
v0.17.0-rc1
We expect to have a stable v0.17.0 release in one week, so that we can use it for CCCC. For now you can either help us to find bugs by trying the RC1, or use v0.16 for now.
Welcome to the new Leela Chess Zero blog! The old blog is gone, and here it is, new and fresh. We will write new posts here.
You can find old posts here: http://archive.is/https://blog.lczero.org/*.