Sudeux includes code derived from the following open-source projects. Their licences require the notices below to be kept. The same texts appear in the app under About (ⓘ on the home screen) ▸ Acknowledgements.
The puzzle generator’s constraint propagation and its uniqueness check (forwards and backwards search) are ported from sudoku.js. Each ported Swift file starts with a header naming the original.
The MIT License (MIT)
Copyright (c) 2014 Rob McGuire-Dale
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.
Development tools (SwiftLint, swift-format, swift-mutation-testing and test-only packages) are not part of the app and are not listed here.