Sigma Chess is a master strength chess program for both PowerMacs and 68K Macs with many features, including: Database support, PGN/EPD support, basic desktop publishing, endgame databases, novice levels, a true perspective 3D board, ExaChess compatibility and much more.
Our Review: Sigma Chess is not just your typical chess-type 'bored' game - Sigma Chess brings so many new innovations to computer chess that you'll enjoy many, many games with the Sigma Master. This features a complex move analysis that makes every game much more realistic. Support is included for collecting annotations of moves, the ability to branch the game into variations, a stunning 3D board, and fully configurable AI levels. Sigma Chess will give Deep Blue a run for its money any day (or perhaps not...)!