brydzonline.com This product includes the DDS double dummy solver (https://github.com/dds-bridge/dds), licensed under the Apache License 2.0. Copyright (C) 2006-2014 Bo Haglund; 2014-2018 Bo Haglund & Soren Hein; and contributors. The bidding rules are a reimplementation guided by saycbridge (https://github.com/eseidel/saycbridge), BSD 3-Clause License, Copyright (c) 2013 The SAYCBridge Authors. Test hands in test/fixtures/sayc_expectations.json are taken from saycbridge. Card ranks, bids and scores use Source Serif 4 Bold (https://github.com/adobe-fonts/source-serif), Copyright 2014 The Source Serif 4 Project Authors, licensed under the SIL Open Font License 1.1 (fonts/OFL-SourceSerif4.txt). The undo and hint icons are from Lucide (https://lucide.dev): ISC License Copyright (c) 2026 Lucide Icons and Contributors Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.