Credits & licenses
Original content retains its existing MIT license. Third-party components and open materials retain their own licenses. Curated puzzles are adapted from Lichess's official CC0 data. Lichess does not endorse the adaptations.
ChessChessOriginal content retains its existing MIT license. Third-party components and open materials retain their own licenses. Curated puzzles are adapted from Lichess's official CC0 data. Lichess does not endorse the adaptations.