Chessy
Nimzo-Larsen Attack: Classical Variation with Ba3 — Playing as Black
After 1.b3 d5 2.Ba3 e5, you've reached a crossroads in the Nimzo-Larsen Attack. White has developed their light-squared bishop to an unusual square, pressuring your f8-bishop. Stockfish evaluates this as -0.27, a small edge for Black — and the statistics back that up: across nearly 15,000 games, Black actually wins more often than White (48.1% to 47.1%). The key question is whether White will trade that off with Bxf8 or try something more ambitious. The interactive drill below lets you practise handling whatever White throws at you.
Play the Nimzo-Larsen Attack: Classical Variation: Ba3 against the engine
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The best way to internalise these ideas is to play them. Jump into the interactive drill below, take the Black side, and practise punishing White's inaccuracies
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Your setup with ...d5 and ...e5 stakes a claim to the centre in classic fashion. You've already taken space with two pawns and opened lines for your queen's bishop and king's bishop. White's early Ba3 puts their bishop on a funny diagonal — it's eyeing your f8-square, but it's also misplaced, far from the centre and not contributing to White's development. If White doesn't capture on f8, that bishop can become a target. Your general plan is straightforward: complete development (Nc6, Nf6, Be7 or Bd6), castle kingside, and enjoy the central space you've built. Because your d5- and e5-pawns control vital central squares, White will struggle to challenge you without making concessions.
The Engine's Verdict: Black Is Fine
Stockfish evaluates this position at -0.27, confirming a small advantage for Black. That number is modest — you're not winning by force — but it tells you that White's early bishop sortie hasn't achieved anything concrete. The engine's top recommendation for White is Bxf8, trading bishop for knight immediately. After Bxf8 Kxf8 d4 e4, the position is roughly equal but slightly easier for Black to play: your king is safe on f8 after recapturing, you have a pawn centre, and White has to prove compensation for the bishop pair they gave up. If White avoids this trade and plays something else, their position quickly deteriorates.
White's Most Common (and Punishable) Mistakes
White's most-played move is Bxf8 (12,801 games), which is also the engine's best — so many White players find the right idea. But the alternatives are instructive and worth knowing how to handle: e3 (538 games) is an inaccuracy costing about 0.7 pawns. It blocks White's own bishop on c1 and does nothing to challenge your centre. Simply develop — Nc6, Nf6 — and you'll have a comfortable game. d4 (262 games) is a full mistake, losing around 2.0 pawns. This tries to crack the centre but badly weakens White's position. Capture with ...exd4 or ...dxc4? Actually, after 1.b3 d5 2.Ba3 e5 3.d4, you can take with ...exd4, opening the centre while White's pieces aren't ready. g3 (230 games) is another inaccuracy. It fianchettoes the other bishop but leaves White lagging in development. Notice the pattern: White scores only 28.7% after g3 and just 17.6% after Nc3 — those are fantastic numbers for you.
Facing the Main Line: Bxf8
The critical continuation is 3.Bxf8 Kxf8. After you recapture with the king, White typically plays 4.d4, trying to challenge your centre. You should answer with 4...e4, pushing forward and gaining space. White's d4-pawn is now blocked by your e4-pawn, and you have a free hand to develop: bring out Nc6, Nf6, Bd6, and castle by hand (Kg8). White's bishop pair is their only compensation, but your central dominance and safe king position give you at least equal chances. In the database, White scores 49.5% from this position — essentially even, not a scary line at all.
Results across 14,882 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Bxf8 | 12,801 | 49.5% |
| e3 | 538 | 39.6% |
| d4 | 262 | 36.3% |
| g3 | 230 | 28.7% |
| Nc3 | 221 | 17.6% |
| Nf3 | 143 | 35.7% |
Frequently asked questions
Is the Nimzo-Larsen Attack with Ba3 sound for White?
It's fully playable, but the statistics show Black does slightly better: across 14,882 games Black wins 48.1% vs White's 47.1%, and the engine gives a small edge to Black (-0.27). White's early bishop development is a bit slow, and if you play accurately you can claim a comfortable game.
What happens if White doesn't take on f8?
Most alternatives are clearly worse for White. Moves like e3, d4, g3, and Nc3 are all considered inaccuracies or mistakes by the engine. White's best scoring move is Bxf8 (49.5% for White), while moves like Nc3 drop White's score to just 17.6%. So if White avoids the trade, you're already doing very well.
How should Black develop after 3.Bxf8 Kxf8?
After 4.d4 e4, you have a solid plan: develop your knight to c6, your other knight to f6, put your bishop on d6 (or e7 for a more solid setup), and get your king to safety on g8. Your central pawns give you space and make it hard for White to find active play.
Why does the king recapture on f8 instead of the queen?
After Bxf8, taking with the king is best because it centralises your king (it's safe enough on f8) and keeps your queen active. If you recapture with ...Qxf8, the queen ends up on a passive square blocking your other pieces. The engine line Bxf8 Kxf8 shows this is the right approach.