The Comet. Three-time Soviet Champion who burned bright and died young at 38. Fischer considered him one of the most dangerous opponents in the world.
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.
Stein is difficult to reduce to a single label. He can handle a position patiently and then turn a small imbalance into a highly tactical fight when the opportunity appears.
That makes him a particularly rich opponent. The game may begin with natural positional moves before becoming much sharper than expected.
Playing Stein rewards flexibility. You need to recognise when a quiet position is about to change character and when activity has become more important than preserving a comfortable structure. He is a good choice for players who enjoy fighting chess but want more variety than an opponent built mainly around direct attack.
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.
Leonid Stein won the Soviet Championship three times in four years, a feat made extraordinary by the fact that the Soviet Championship was arguably the strongest national tournament in history. He combined Tal's tactical brilliance with Petrosian's positional sense, a rare and lethal mix that made him dangerous in any type of position. Fischer considered him one of the most dangerous opponents in the world, and Spassky called him 'a genius who could have been World Champion.' He died suddenly of a heart attack in 1973 at just 38, on the eve of departing for a tournament. Chess lost one of its brightest stars far too soon.
Notable: Three Soviet Championship titles in four years (1963, 1965, 1966). His games against Fischer in the 1967 Interzonal are considered masterpieces of defensive resourcefulness.
| Era | Soviet Era |
| Years | 1934–1973 |
| Peak rating | 2620 |
| Born | Kamianets-Podilskyi, Ukraine, 1934 |
| Title | Three-time Soviet Champion (1963, 1965, 1966) |
| Style | Tactical brilliance with positional depth, universal style, creative middlegames |
The ChessGate personality of Stein, 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_Stein.exe · 27 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 | Attacking Legends, Soviet School |
| Collection | Complete Personality Collection |
| In the browser | A lighter version of ChessGate Stein plays on ChessGate. |