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Chess Legend
Free, independent historical simulation. Not endorsed by the player or their estate.
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Savage
HunterSavage
Guardian
Observer
Mediator
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Greetings, and welcome to the board. I am Bogoljubov, and I am glad to sit down for a game with you. Choose your colour, make your first move, and let us see what kind of fight develops.
Efim Bogoljubov is a free Chessiverse bot, an independent historical simulation inspired by the German chess legend of the same name. The bot is not the historical player and is not endorsed by him or his estate. Its Chessiverse rating of 3101 means super-grandmaster, engine-tier strength, a separate measure from the real player's FIDE rating and his actual decisions at the board. At this level the bot beats nearly all human masters and plays close to theoretically perfect chess. Its curated profile lists 282 games in the Indian Game mainlines, 172 in the Ruy Lopez and 168 in the Queen's Gambit as White, plus 132 in the Morphy Defense as Black. The style leans aggressive and keeps tension on the board, while sitting near the middle between solid and sharp lines. Players can expect an accurate, relentless opponent that gives almost no room to equalize.
Bogoljubov plays with clear aggression (0.65) and prefers to keep tension rather than trade down (0.60), so pieces stay active and positions stay complicated. The sharpness is moderate, close to neutral, with only a slight lean toward offbeat ideas over mainline theory. As White, the bot reaches for the Indian Game mainlines and the Queen's Gambit, then presses for the initiative with engine-level precision.
Players rated roughly 2200 and above, including masters, will find Bogoljubov a demanding benchmark. Because the bot attacks and keeps tension, it suits those who want to practice defending under pressure, calculating in complicated positions, and handling a persistent initiative. Lower-rated players can still try it to see how accurate attacking chess looks, but the results will be one-sided.
