A0lite

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A0lite,

a didactic UCI compliant neural network chess engine by Dietrich Kappe, written in Python, released in March 2020 under the permissive MIT License [1] as successor of LeelaLite, already announced in October 2018 [2]. A0lite applies upper confidence bounds to Monte-Carlo trees, and requires the installation of the Bad Gyal PyTorch net evaluator, by default using MeanGirl-8 (32x4) net on CPU [3]. A0lite had its official tournament debut at the Qualification League of TCEC Season 19.

Quotes#

Dietrich Kappe explained his motivation for writing A0lite on CCC, Mar 06, 2021 [4] :

1. Teaching other people how simple it is to write a basic mcts/nn engine with a0lite python.
2. Experimenting with new nn architectures and non-RL training approaches.
3. Combining ab/nnue and mcts/nn in a hybrid approach. (Was a0lite julia, renamed Bender)
4. Reach 3300 ccrl

See also#

• AlphaZero
• Leela Chess Zero
• Maia Chess

Forum Posts#

• Leela Lite: A toolkit for experimenting with leela nets in python by Dietrich Kappe, CCC, October 31, 2018
• An opponent for humans: Bad Gyal by Dietrich Kappe, CCC, July 02, 2019
• Mean Girl 8 released by Dietrich Kappe, CCC, January 04, 2020
• New engine: a0lite by Dietrich Kappe, CCC, March 28, 2020
• a0lite problems with badygal configuration etc. by Norbert Raimund Leisner, CCC, June 03, 2020
• Night Nurse 0.2 by Dietrich Kappe, CCC, August 19, 2020 » Igel, NNUE

External Links#

Engine#

• GitHub - dkappe/a0lite: A neural net chess engine in 95 lines of python
• GitHub - dkappe/badgyal: Simple pytorch net evaluator with Bad Gyal 8 and Mean Girl 8 net included
• GitHub - joergoster/a0lite: A neural net chess engine in 95 lines of python
• GitHub - dkappe/leela_lite: A toolkit for experimenting with UCT and Leela Chess nets in Python (predecessor of A0lite)

Misc#

• A0 from Wikipedia
• Lite from Wikipedia
• lite - Wiktionary
• Bad Gyal from Wikipedia
• Status Quo - Mean Girl (1971), YouTube Video

References#

1. ↑ New engine: a0lite by Dietrich Kappe, CCC, March 28, 2020
2. ↑ Leela Lite: A toolkit for experimenting with leela nets in python by Dietrich Kappe, CCC, October 31, 2018
3. ↑ a0lite/README.md at master · dkappe/a0lite · GitHub
4. ↑ Re: Your motivation for writing a chess engine? by Dietrich Kappe, Mar 06, 2021

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