cm-engine-runner
v2.0.1
Published
Abstraction layer to run chess engines, supports opening books
Readme
cm-engine-runner
A JavaScript module to act as a framework for running chess engines in the browser.
Working engines
Stockfish 18
- npm package:
stockfish(v18.0.5) - File:
node_modules/stockfish/bin/stockfish-18-lite-single.js - Type: WASM (single-threaded lite variant)
- https://github.com/nmrugg/stockfish.js
Polyglot opening books
- An engine to play moves from a polyglot (.bin) openings file.
- https://github.com/shaack/cm-polyglot
Stockfish Skill Levels
this.uciCmd('setoption name Skill Level value ' + (LEVELS[props.level][1]))- Level 0 = 1100 ELO rating
- Level 1 = 1165 ELO rating
- Level 2 = 1230 ELO rating
As you can see the strength is increasing by 65 ELO points for each level, so that;
- Level 20 = 2570 ELO rating.
And depth to ELO: https://chess.stackexchange.com/questions/8123/stockfish-elo-vs-search-depth?rq=1
References
- UCI reference
- Official Stockfish
- stockfish.js
- https://github.com/mcostalba/Stockfish
- https://github.com/niklasf/stockfish.js (stockfish-v10-niklasf.js)
- https://github.com/bjedrzejewski/stockfish-js <= supports opening books
- chess-tools
- https://www.chessprogramming.org/Opening_Book#Formats
- https://github.com/evilwan/stakelbase
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