English Opening: what should White play?

In the English Opening after Black fianchettoes the queenside bishop, White's most critical central continuation is d4, claiming central territory and challenging the diagonal. Chosen in 30.4% of games (624K recorded), d4 carries an engine evaluation of +0.57 and yields a 52.1% score for White. While flexible developing moves like Nf3 are also common, staking an immediate claim in the center with d4 remains the primary engine recommendation.

The Strategic Value of d4

Advancing with d4 seizes control over the central dark squares and directly blunts the influence of the b7 on the long diagonal. The central presence discourages early breaks and sets up a favorable space advantage. An illustrative engine continuation features d4 e6 e4 Bb4 f3 Qh4+, where play sharpens quickly as Black seeks counterplay against White's expanded pawn center.

Flexible Alternatives: Nf3 and e4

The most frequent choice across the database is Nf3, played in 35.1% of games (720K recorded) with an evaluation of +0.26 and a 52.4% score. A sample continuation unfolds with Nf3 Nf6 g3 c5 Bg2 g6, leading to symmetrical fianchetto structures. Alternatively, e4 represents a direct space-gaining approach, appearing in 25.7% of games (528K recorded) with an evaluation of +0.39 and the highest scoring performance at 53.5%. The engine illustrates this plan via e4 e5 a3 Nc6 Nf3 Nf6.

Quiet Options

Quieter setups such as d3 account for 8.5% of games (174K recorded, evaluated at +0.14), typically continuing along the lines of d3 c5 e4 Nc6 Nge2 Nf6. The prophylactic a3 is rare, chosen in only 0.4% of games (8.2K recorded) with an evaluation of +0.10, showing the variation a3 Nf6 d4 d5 Nf3 e6.