Play Experion

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White Black

Strength Openings

Tournament

Games per pairing

Moves

Every engine runs in your browser. Experion, Fruit, Stash, WyldChess and Glaurung are compiled to WebAssembly and run on a single thread; CeruleanJS is plain JavaScript with its opening book. Pick any pairing, including engine against engine, or run a round-robin tournament between them at the selected strength. The desktop Experion, using several threads, is stronger. connects native engines on your own computer (for example Crafty) through tools/engine-bridge.mjs.