The Attacker. One of the strongest women players of her era, Graf challenged Menchik twice for the World Championship. Sharp, aggressive, and uncompromising. She played chess like a street fight.
One-time purchase · Windows download · UCI compatible · works offline · instant download after purchase
The browser version lets you meet the personality before buying. The installed engine plays locally, in CZUBATRONIC 2400 and your own chess software, with the full personality model.
Graf attacks from the first chance. Her chess is sharp and combative, short on breathing room, and aimed at keeping you under immediate, personal pressure for the whole game.
Against her, calm plans need defending. She crosses them with threats, keeps the position irritated and punishes any move played on autopilot.
Regular games against Graf train composure under fire. You learn to keep developing while parrying, to answer aggression with precision rather than nerves and to find the counter that turns a wild position your way. The fighting challenger of the 1930s makes every game feel personal, in the best sense.
A single game shows part of the personality. Repeated games reveal more: you begin to recognise familiar structures, recurring plans and the kinds of positions this opponent prefers. That is where the collection becomes interesting, because different personalities put different questions to your chess.
Sonja Graf was one of the strongest female players of the 1930s and 40s, challenging Vera Menchik twice for the Women's World Championship. Sharp and aggressive, she played chess with a combative intensity that set her apart. Opponents had no time to breathe. After World War II she emigrated to Argentina and later to the United States, where she continued playing and teaching. Her autobiography 'Schach, mein Schicksal' (Chess, My Destiny) remains one of the most vivid accounts of chess life in the pre-war era.
Notable: One of the first women to write a chess autobiography. Her aggressive style earned her the nickname 'The Attacker' among contemporaries.
| Era | Classical |
| Years | 1908–1965 |
| Historical rating (estimated) | 2380 |
| Born | Karlsruhe, Germany, 1908 |
| Title | Women's World Championship Challenger (1934, 1937) |
| Style | Sharp attacking play, aggressive combinations, uncompromising fighting style |
The ChessGate personality of Graf, reconstructed from the historical player's games, with their own style, their own plans and their own idea of chess. A chess partner with real character, at any level, whenever you like. Play it inside CZUBATRONIC 2400 and the built-in Coach can flag weak moves and show a stronger one. The engine runs offline on your machine, in CZUBATRONIC 2400 and any UCI chess interface.
| File | ChessGate_Graf.exe · 21 MB |
| Runs in | CZUBATRONIC 2400 (as an external engine) and any UCI chess interface |
| Requirements | Windows 10 / 11, 64-bit; any UCI chess interface; CZUBATRONIC 2400 lists it as an external engine |
| Delivery | Instant download after purchase. Installer, no administrator rights; if CZUBATRONIC 2400 is installed, the personality registers itself there as an engine. |
| Works offline | Yes. No account, no server. |
| Packs | – |
| Collection | Complete Personality Collection |
| In the browser | A lighter version of ChessGate Graf plays on ChessGate. |