In-browser chess engine ======================= /engine/stockfish-18-lite-single.js /engine/stockfish-18-lite-single.wasm Stockfish.js 18, the lite single-threaded WebAssembly build of Stockfish. Licensed under the GNU General Public License, version 3. A complete copy is served at /engine/LICENSE.txt. These files are distributed WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See sections 15 and 16 of that license. Reproduced verbatim from the top of stockfish-18-lite-single.js: /*! * Stockfish.js 18 (c) 2026, Chess.com, LLC * https://github.com/nmrugg/stockfish.js * License: GPLv3 * * Based on Stockfish (c) T. Romstad, M. Costalba, J. Kiiski, G. Linscott and other contributors. * https://github.com/official-stockfish/Stockfish * * Nets by Linmiao Xu (linrock) * https://tests.stockfishchess.org/nns?network_name=nn-9067e33176e */ Corresponding source. These binaries were built from the WebAssembly port at the tagged release below; the port's own repository carries the engine source it was built from. Port: https://github.com/nmrugg/stockfish.js Tag: v18.0.8 Commit: 93c994592dcf3b4b21052ab925e9b534df9c0918 (2026-06-15) Published: npm package "stockfish" 18.0.8, file stockfish-18-lite-single.* Engine: https://github.com/official-stockfish/Stockfish Modifications: none.