Vektor3 is a chess that has a customizable chessboard with multiple piece stets, multiple documents, multithreading, support for variations, annotation editor with text styles, move annotations and diagrams, several playing levels, opening book, game analysis, position editor, PGN import and export, HTML export, speech, multiple undo and redo, extensive HTML help including rules of chess. What's New: Version 3.2.1 adds the following: Improved compatibility with Mac OS X 10.3. Fixed a problem with importing Elo scores from PGN files. | 
