Modern Defense: Bishop Attack, Monkey's Bum
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Statistics from Lichess
4,059 games: White 33.9% / Draw 3.3% / Black 62.8%
| Next move | Games | White / Draw / BlackW / D / B |
|---|---|---|
| 1,4921,492 | ||
| 1,1871,187 | ||
| 449449 | ||
| 393393 | ||
| 213213 | ||
| 6565 | ||
| 5656 | ||
| 4848 |
Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 29, 2026
Engine evaluation
−1.06 Black is better
Best play: 5. Ne2 Bf6 6. Nbc3 d6 7. Qh3 a6 8. a3 Nc6 9. f4 Bd7
Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.
Overview
Modern Defense: Bishop Attack, Monkey's Bum (ECO B06, Semi-Open Games) is a variation of the Modern Defense, reached after 1. e4 g6 2. Bc4 Bg7 3. Qf3 e6 4. d4 Bxd4 (4 moves).
In 4,059 rated Lichess games between players rated 1600 to 2500, White won 33.9%, Black 62.8% and 3.3% were drawn. White's most played move here is 5. Ne2, in 37% of those games.
Written from the Lichess opening list and explorer. Know this line well? Write about it.
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How to play against the Modern Defense: Bishop Attack, Monkey's Bum
The most played answer, 5. Ne2, also scores best for White: 41.1%, with White winning 39.5% and Black 57.4% of 1,492 games. Of the main answers, 5. Be3 scores lowest: 16.9%. Stockfish's first choice is also 5. Ne2.
Main answers: those played in at least 5% of these games. Score: White's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings
Cite this page
Caissa Codex. “Modern Defense: Bishop Attack, Monkey's Bum (B06)”. Lichess data as of 29 Oct 2026. https://chesscodex.org/openings/modern-defense-bishop-attack-monkeys-bum