Sicilian Defense: Alapin Variation: what should White play?

In the Sicilian Defense: Alapin Variation, White should proceed with the central thrust d4, which immediately seizes central territory and fulfills the primary strategic purpose of preparing the c3 pawn. Supported by the engine evaluation of +0.20, d4 is overwhelmingly favored, appearing in 90.1% of recorded games (4.75M recorded) where White scores 52.1%.

The Strategy Behind d4

By establishing the d4 advance, White secures classical control over central squares like d4 and e5 while challenging Black's grip on the board. The foundational concept of the Alapin Variation rests on utilizing the c3 pawn to support a broad pawn front. In the primary illustrative continuation, play proceeds with d4 d5 e5 Nc6 Nf3 Bd7, leading to a closed French-like pawn structure where White maintains spatial dominance on the kingside.

Alternatives to the Main Line

The most notable alternative is Nf3, which accounts for 9.4% of games (496K recorded) with an evaluation of +0.18 and a 50.1% score for White. This develops a piece toward the center while postponing the central clash, often demonstrated in the sequence Nf3 d5 exd5 exd5 Bb5+ Nc6. Other moves are far less common, such as the fianchetto setup g3 (+0.01), played in 0.3% of games (14K recorded) with a 48.8% White score, and the passive h3 (-0.05), appearing in 0.3% of games (13K recorded) where White scores 47.3%. White may also develop quietly via Be2 (+0.00), leading toward Be2 Nc6 d4 d5 e5 Nge7.