Efim Bogoljubov
Free, independent historical simulation from the Hall of Legends. Not endorsed by the player or their estate.
- Rating
- 3101
- Playstyle
- Savage
- Openings
- Gambler
Playstyle
Hunter
Savage
Guardian
Observer
Mediator
Savages are the most aggressive playstyle. They attack their opponent's pieces and create threats.
What the Axes Mean
- Aggressive
- Seeks attacks and initiative
- Defensive
- Prioritizes safety and solidity
- Simplifying
- Trades pieces, avoids chaos
- Complicating
- Keeps tension, creates complexity
Openings
What the Axes Mean
- Sharp
- Plays dynamic, double-edged openings
- Solid
- Prefers safe, positional systems
- Unprepared
- Varies openings, less predictable
- Theoretical
- Sticks to main lines, well-prepared
Repertoire
How often Efim picks each line when you allow it
- Classical Caro-Kann100%
1. e4 c6 2. d4 d5 3. Nc3
Study Guide - Classical French92.1%
1. e4 e6 2. d4 d5 3. Nc3
Study Guide - Ruy Lopez72.9%
1. e4 e5 2. Nf3 Nc6 3. Bb5
Study Guide - Open Sicilian70.5%
1. e4 c5 2. Nf3 Nc6 3. d4
Study Guide - Indian Game mainlines67.1%
1. d4 Nf6 2. c4
Study Guide - Queen's Gambit58.3%
1. d4 d5 2. c4
Study Guide - Queen's Pawn Game40.6%
1. d4 d5 2. Nf3
Study Guide
The percentages indicate how likely the bot will play the opening if allowed by the opponent. The lines listed are the most common seen in the bot's games, but generally repertoires are quite broad, so you'll frequently see alternative lines, especially if the percentages are low.
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About Efim Bogoljubov
Efim Bogoljubov says: 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.
How Bogoljubov plays
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.
Who should play Bogoljubov
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.
Frequently asked about Bogoljubov
What rating is Bogoljubov?
Bogoljubov has an estimated Chessiverse rating of 3101, which is super-grandmaster, engine-tier strength. This is the bot's own rating and is separate from the historical player's FIDE rating.
What opening does Bogoljubov play?
As White, the bot's most played openings are the Indian Game mainlines and the Ruy Lopez. It also plays the Queen's Gambit as White and the Morphy Defense as Black.
Can master-level players beat Bogoljubov?
At 3101, Bogoljubov beats nearly all human masters and plays close to theoretically perfect chess, so a win is extremely unlikely even for titled players. A draw is the realistic goal, and it requires accurate defense against sustained, aggressive pressure. Master-level players can still use the games as demanding training.