Pieces: the “cburnett” set by Colin M.L. Burnett, used under CC BY-SA 3.0. Analysis by Stockfish 17.1 (GPLv3), compiled for the browser by the stockfish.js project; falls back to Stockfish 10 where WebAssembly is unavailable. Accuracy uses the win-probability model popularized by Lichess. Game Rating is an estimate that leans on your actual rating in short games.