Modern Defense: what should White play?

In this position from the Modern Defense, White enjoys a comfortable territorial advantage and can choose between classical development with Be2 or an immediate flank expansion via h4. While Be2 remains the overwhelmingly popular choice, played in 84.9% of the 80,523 recorded games with an engine evaluation of +0.55, the aggressive thrust h4 offers an evaluation of +0.49 and yields a strong 55.8% scoring rate for White across 1.6K recorded games.

The direct flank push with h4

Advancing the h-pawn with h4 immediately targets Black's kingside fianchetto setup. By probing the g6 complex early, White attempts to disrupt Black's structure before Black completes development. A primary continuation suggested by engines runs h4 h6 e4 Nd7 Qc2 O-O, showing White expanding in the center with e4 while keeping pressure on the kingside.

Classical development with Be2

The most common path remains Be2, chosen in 68K recorded games with White scoring 51.7%. This quiet developing move prepares kingside castling without committing the pawn structure prematurely. An illustrative engine line proceeds Be2 O-O Qc2 b6 h4 h6, demonstrating that even after developing the bishop, White often returns to the thematic push on the flank.

Central and queenside alternatives

White also possesses natural alternatives in e4, b3, and Qd2. Establishing the full pawn center with e4 appears in 5.1% of games (4.1K recorded, +0.54 evaluation), where play may proceed e4 O-O h4 c5 h5 Nbc6. Meanwhile, b3 accounts for 8.0% of encounters (6.4K recorded, 49.4% score), and Qd2 assesses at +0.54, leading to play such as Qd2 O-O b3 Nd7 Bb2 Nf6.