Licenses and source
The app, engine and evaluation files are served from the same origin. No game data is sent to a server. There are no analytics services or external fonts. Games are saved in your browser's local storage; clearing site data removes saved games.
App and YaneuraOu
This app and the modified YaneuraOu engine are distributed under GPL-3.0-or-later. YaneuraOu includes work by the YaneuraOu project and Stockfish contributors.
- Application source
- Engine source for this WASM (pinned commit)
- Browser changes
- Build script / Versions and checksums
- GNU General Public License v3
Build with Emscripten 3.1.43 using the source, patch and build script. The application repository includes the build instructions and CI configuration.
TuyouraOu 11micro
The nn.bin and progress.bin files were released under the MIT License in Yaneurao's release article. Architecture: SFNN_ka2_2048_8_64_progress8. FV_SCALE: 24. The evaluation banner image is not redistributed.
MIT License Copyright (c) 2026 やねうら王プロジェクト Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.