STONECROWN CHESS / 石冠棋局

Original geometry, marble/wood textures, interface and synthesized audio were created for this project. No film, commercial-game models, recordings or assets are used.

Local AI: Stockfish.js 19.0.1, lite single-thread build, by Nathan Rugg and the Stockfish contributors. GPL-3.0-or-later. The distributed JS and WASM are unmodified (filenames only normalized). License: /engine/COPYING.txt
Corresponding upstream source: /engine-source/stockfish-19.0.1-source.tar.gz
Upstream commit: 0d5dd7944f88c817c07a26bc4fb1905d5f9c46d6 (v19.0.1)
Required lite network: /engine-source/nn-61e7af4bb97d.nnue
Network SHA256: 61e7af4bb97d51eeeb25d322916f86513b5cd3a827ce189c98c6e31946f99e5b
Upstream: https://github.com/nmrugg/stockfish.js
Rebuild upstream with Emscripten 6.0.9, Node and make: extract the archive, copy the supplied NNUE file into src/, then run node build.js --lite --single-threaded. Read upstream README and build.js --help for toolchain/build options. The source archive includes those build scripts and the C++ engine.

Complete source for this new game: /engine-source/stonecrown-source.tar.gz
Build instructions are in its README.md and package.json. This new game's original code is available under GPL-3.0-or-later; this does not relicense the portal or any other game.

Rules: chess.js 1.4.0, BSD-2-Clause. /vendor/CHESS-LICENSE.txt
Rendering: Three.js 0.185.0, MIT. /vendor/THREE-LICENSE.txt
Brand icon: shared XRHSHUI Games icon, unchanged.