ECO A01 · Nimzo-Larsen Attack

Nimzo-Larsen Attack: Polish Variation

1. b3 b5

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White to move. The arrow shows Stockfish’s best move.
Best move

2. Nf3+0.39

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Nimzo-Larsen Attack: Polish Variation (A01), reached after 1. b3 b5, Stockfish 18 recommends 2. Nf3 for White. White is slightly better (+0.39).

Top engine moves

  1. +0.392. Nf3 Nf6 3. e3 a6 4. d4 e6 5. Be2 c5 6. c4 cxd4
  2. +0.352. e4 Bb7 3. Bxb5 Bxe4 4. Nf3 e6 5. Nc3 Bb7 6. O-O Nf6
  3. +0.252. e3 Bb7 3. Nf3 b4 4. d4 Nf6 5. Bb2 e6 6. c4 c5

Frequently asked questions

What is the best move in the Nimzo-Larsen Attack: Polish Variation?
After 1. b3 b5, Stockfish 18 at depth 18 recommends 2. Nf3 for White, continuing Nf6 3. e3 a6 4. d4 e6 5. Be2 c5 6. c4 cxd4. White is slightly better (+0.39). The next best moves are 2. e4 (+0.35) and 2. e3 (+0.25).
Is the Nimzo-Larsen Attack: Polish Variation a good opening?
Stockfish rates the position at +0.39: white is slightly better. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the Nimzo-Larsen Attack: Polish Variation?
A01. ECO codes classify chess openings from A00 to E99; A is the volume for flank openings.

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).