mpchess pieces by Maxime Chupin (https://github.com/chupinmaxime), licensed GPLv3 or later.
Copied on 2026-11-01 from lichess-org/lila, public/piece/mpchess; the licence entry is in that repository's COPYING.md.
Licence text: https://www.gnu.org/licenses/gpl-3.0.txt
