Native-strength calculation
Stockfish runs as multithreaded WebAssembly with SharedArrayBuffer, Atomics, and its complete neural evaluation network.
A serious engine. A quiet board.
Chess without compromise.
Face Stockfish 19 with its full NNUE network. The engine thinks locally, the board stays responsive, and your position never leaves the browser.
The full engine is a 94.5 MiB one-time download and is cached by your browser.
19Stockfish release
FullNNUE network
LocalPrivate evaluation
60 fpsIndependent UI
Under the board
Built for the battle to come.
Rendering stays fluid
The engine lives in dedicated workers while Rust, egui, and WebGPU keep input and board rendering responsive.
Animation-ready state
Rules and presentation are separated so today’s focused 2D game can grow into a fully animated battlefield.