Search found 282 matches

by dkappe
Fri Nov 30, 2018 9:31 pm
Forum: Computer Chess Club: General Topics
Topic: Ender128-80 Released
Replies: 0
Views: 788

Ender128-80 Released

Ender is a 128x10 Leela compatible net trained to play up to 16 piece endgames. It is so not zero. Major developments. The training now distills problem positions, i.e. ones where the net misevaluates value. Those positions are then overrepresented in the training. It is now the stronger Ender net y...
by dkappe
Thu Nov 22, 2018 5:00 pm
Forum: Computer Chess Club: General Topics
Topic: News from AlphaZero
Replies: 17
Views: 3798

Re: News from AlphaZero

Having trained Ender nets and tested the various Leela nets extensively, I can say that stockfish 9 is at a different level from 16p on down. If A0 has managed to solve this problem, I would be fascinated to find out how.
by dkappe
Sun Nov 18, 2018 7:49 pm
Forum: Computer Chess Club: General Topics
Topic: Leela endgame training?
Replies: 4
Views: 1271

Re: Leela endgame training?

Ender is a NN trained exclusively on endgames (starting epd’s and 6p TB in self-play). Details here https://github.com/dkappe/leela-chess-weights/wiki/Endgame-Net The thing that’s made the most difference in evaluations has been adding a random half-move clock value of 0-99 to 10% of the starting ep...
by dkappe
Wed Oct 31, 2018 5:20 pm
Forum: Computer Chess Club: General Topics
Topic: Leela Lite: A toolkit for experimenting with leela nets in python
Replies: 0
Views: 707

Leela Lite: A toolkit for experimenting with leela nets in python

For those wanting to experiment with Leela Chess Zero, but finding the highly optimized, multithreaded c++ code of lc0 too complex, I’ve released Leela Lite, a simple uct algorithm in python. It now has a script that allows it to be used as a uci engine. https://github.com/dkappe/leela_lite Comments...
by dkappe
Sun Oct 14, 2018 3:08 am
Forum: Computer Chess Club: General Topics
Topic: Official: Lc0 is the strongest engine :)
Replies: 40
Views: 14186

Re: Official: Lc0 is the strongest engine :)

It is actually one of the path to improvement. Dedicated Alpha / Beta "blunder checker", perhaps running on CPU which usually have spare cycles for LC0. I made one of these for leela in the days of the “blunder prone’ 192x15 networks. You can see the background and results: https://github.com/dkapp...
by dkappe
Thu Oct 11, 2018 4:36 pm
Forum: Computer Chess Club: General Topics
Topic: Official: Lc0 is the strongest engine :)
Replies: 40
Views: 14186

Re: Official: Lc0 is the strongest engine :)

You may want to use this tool to see how your gpu and cpu compare.

https://github.com/dkappe/leela-ratio
by dkappe
Wed Oct 10, 2018 3:12 am
Forum: Computer Chess Club: General Topics
Topic: Deep Pepper Chess
Replies: 1
Views: 1020

Re: Deep Pepper Chess

It still doesn’t support uci, I presume? Also, any examples of play?
by dkappe
Wed Oct 10, 2018 2:58 am
Forum: Computer Chess Club: General Topics
Topic: Leela: Would it be reliable in correspondence chess?
Replies: 8
Views: 3052

Re: Leela: Would it be reliable in correspondence chess?

Sorry, the point being that it yields better, more useful results for analysis (and it may play a bit better than vanilla lc0).
by dkappe
Wed Oct 10, 2018 2:55 am
Forum: Computer Chess Club: General Topics
Topic: Leela: Would it be reliable in correspondence chess?
Replies: 8
Views: 3052

Re: Leela: Would it be reliable in correspondence chess?

I wasn’t too excited about lc0 multipv. It’s very easy for a single move to dominate the visits. I added a random root mod to my bender fork of lc0. After an initial 4000 iterations of search, it explores random root moves 1/16th of the time, then random root moves proportional to Q 3/16ths of the t...