Nimzo-Larsen Attack: Classical Variation: what should White play?

In the Classical Variation of the Nimzo-Larsen Attack, White's most testing continuation against Black's early bishop development is g4, which immediately challenges the light-squared bishop and claims kingside space. While classical development moves remain playable, engines award g4 the top evaluation (+0.15), targeting the exposed f5 before Black stabilizes the center. With over 370,000 games recorded in the database from this tabiya, White has several paths, but the immediate pawn thrust offers the sharpest try for an opening initiative.

Kingside expansion with 4. g4

The thrust g4 directly confronts Black's setup by kicking the bishop on f5 before Black can tuck it safely behind an e6 pawn chain. An illustrative continuation demonstrating this dynamic sequence is g4 Bg6 h4 h5 g5 Qc7, where White drives the bishop away and fixes the kingside pawn structure with spatial gains. By advancing pawns on the wing, White seeks to disrupt Black's coordination while keeping the long diagonal open for the bishop on b2.

Classical alternatives: 4. Nf3 and 4. d3

Players who prefer quieter, less committal development often opt for Nf3 (eval -0.02) or d3 (eval -0.03). The move Nf3 leads to symmetrical piece play, exemplified by the engine line Nf3 h6 d4 e6 Bd3 Bd6, where both sides vie for central control. Meanwhile, d3 prepares a restrained pawn center, seen in the sequence d3 Nf6 h3 Bg6 g4 e6, eventually reaching kingside expansion under slightly different timing.

Central and fianchetto options

White can also challenge Black's central chain c6 and d5 with c4 (eval -0.04), which frequently transposes into standard English or Reti formations as in c4 e6 Nf3 Nd7 Nc3 Ngf6. Alternatively, g3 (eval -0.12) allows White to prepare a double-fianchetto via g3 Nf6 Nf3 Nbd7 d3 e6. Nonetheless, g4 remains the premier choice to exploit Black's specific move order.