Leela Chess Zero

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Leela Chess Zero, (LCZero, lc0) an adaption of Gian-Carlo Pascutto's Leela Zero Go project to Chess, using Stockfish's board representation and move generation. No heuristics or prior knowledge are carried over from Stockfish. Leela Chess is open source, released under the terms of GPL version 3 or later, and supports UCI. The goal is to build a strong UCT chess AI following the same type of deep learning techniques of AlphaZero as described in DeepMind's paper, but using distributed training for the weights of the deep residual convolutional neural network. The training process requires CUDA and a GPU accelerated version of Tensorflow installed.

=lc0= Soon after the start of the project, some of the team led by Alexander Lyashuk started to rewrite the engine from scratch. The new engine dubbed lc0 was able to search 4-8 times faster than lczero on NvidiaGPU’s. Training has changed to require lc0 instead of lczero.

=See also=
 * AlphaZero
 * Deep Learning
 * UCT
 * PUCT

=Forum Posts=

2018

 * Announcing lczero by Gary, CCC, January 09, 2018
 * Re: Announcing lczero by Daniel Shawul, CCC, January 21, 2018 » Rollout Paradigm


 * LCZero is learning by Gary, CCC, January 30, 2018
 * LCZero update by Gary, CCC, March 14, 2018
 * LCZero update (2) by Rein Halbersma, CCC, March 25, 2018


 * LCZero: Progress and Scaling. Relation to CCRL Elo by Kai Laskos, CCC, March 28, 2018 » Playing Strength
 * What does LCzero learn? by Uri Blass, CCC, April 05, 2018
 * LCZero in Aquarium / Fritz by Carl Bicknell, CCC, April 11, 2018
 * LCZero on 10x128 now by Gary, CCC, April 12, 2018
 * lczero faq by Duncan Roberts, CCC, April 13, 2018
 * LcZero and STS by Ed Schröder, CCC, June 14, 2018 » Strategic Test Suite
 * Who entered Leela into WCCC? Bad idea!! by Chris Whittington, LCZero Forum, June 23, 2018 » WCCC 2018
 * how will Leela fare at the WCCC? by dannyb, CCC, July 10, 2018 » WCCC 2018
 * Lc0 will participate at the WCCC? Wow! by Martin Renneke, LCZero Forum, July 10, 2018
 * How Leela uses history planes by Tristrom Cooke, LCZero Forum, July 19, 2018
 * Why Lc0 eval (in cp) is asymmetric against AB engines? by Kai Laskos, CCC, July 25, 2018 » Asymmetric Evaluation, Pawn Advantage, Win Percentage, and Elo
 * TCEC season 13, 2 NN engines will be participating, Leela and Deus X by Nay Lin Tun, CCC, July 28, 2018
 * Re: TCEC season 13, 2 NN engines will be participating, Leela and Deus X by Gian-Carlo Pascutto, CCC, August 03, 2018


 * Has Silver written any code for "his" ZeusX? by Chris Whittington, LCZero Forum, July 31, 2018
 * Re: Has Silver written any code for "his" ZeusX? by Alexander Lyashuk, LCZero Forum, August 02, 2018


 * LC0 0.18rc1 released by Günther Simon, CCC, September 25, 2018
 * My non-OC RTX 2070 is very fast with Lc0 by Kai Laskos, CCC, November 19, 2018
 * Re: Alphazero news by Gian-Carlo Pascutto, CCC, December 07, 2018 » AlphaZero
 * Policy training in Alpha Zero, LC0 .. by Chris Whittington, CCC, December 18, 2018 » AlphaZero
 * LC0 using 4 x 2080 Ti GPU's on Chess.com tourney? by M. Ansari, CCC, December 28, 2018

2019

 * LCZero FAQ is missing one important fact by Jouni Uski, CCC, January 01, 2019 » GPU

=External Links=

Chess Engine

 * LCZero
 * LCZero · GitHub
 * Home · LeelaChessZero/lc0 Wiki · GitHub
 * FAQ · LeelaChessZero/lc0 Wiki · GitHub
 * GitHub - LeelaChessZero/lc0: The rewritten engine, originally for tensorflow. Now all other backends have been ported here
 * GitHub - mooskagh/lc0: The rewritten engine, originally for cudnn. Now all other backends have been ported here
 * GitHub - LeelaChessZero/lczero: A chess adaption of GCP's Leela Zero
 * LCZero – Google Groups
 * Leela Chess Zero - Blog
 * Leela Chess Zero - Facebook
 * Leela Chess Zero from Wikipedia
 * Leela Chess Zero: AlphaZero for the PC by Albert Silver, ChessBase News, April 26, 2018

Misc

 * Leela (Futurama) from Wikipedia
 * Marc Ribot's Ceramic Dog - Lies My Body Told Me (Live on KEXP, July 20, 2016), YouTube Video

=References=

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