Rebel Decade 3.0 is a full chess program with many features. It has an estimated ELO rating of 2500 on a Pentium 333, extensive database functions, including 4500 recent (grand)master games, the full Rebel 10 opening book by Jeroen Noomen, and an Encyclopedia of Chess (EOC) database of 200,000 positions. An opening book editor, direct PGN support (read/write/import/export), 4-clipboards (read/write), 4-boards option, simultaneous play, and blindfold chess are all available. An online manual supports three languages (English, German, and Dutch). Automatic annotation (coach) is available, and all screen items are flexible using drag and drop.