Zukertort Opening: Dutch Variation: what should White play?

In the Zukertort Opening: Dutch Variation (ECO A04), White faces the asymmetrical Dutch setup f5 after opening with f3. The top engine recommendation is the fianchetto move g3, holding an evaluation of +0.47 and a 54.4% scoring rate across 841K recorded games (31.7% of the database). By preparing to place the bishop on the long diagonal, White directly counters Black's early Kingside pawn thrust while retaining full flexibility in the center.

Strategic themes of g3 and c4

The immediate development of the Kingside fianchetto via g3 blunts Black's typical attacking intentions on the Kingside by establishing a solid defensive barrier. An illustrative continuation following this plan is g3 e6 c4 Nf6 Bg2 Be7. Alternatively, White can contest space directly with c4, which also yields a +0.47 evaluation and scores 52.6% over 357K games (13.4% of recorded encounters), often transposing into similar structures after c4 e6 g3 Nf6 Bg2 Be7.

Classical central options

The most frequent choice in the database is d4, selected in 36.6% of games (971K recorded) with an evaluation of +0.43 and a 51.7% score for White. This move transposes directly into classical Dutch structures, as shown in the illustrative sequence d4 e6 g3 Nf6 c4 Bb4+. White can also choose d3, seen in 11.8% of games (313K recorded) with a +0.31 evaluation and a 55.0% score, leading to lines like d3 Nc6 d4 e6 g3 Nf6. Lastly, the Queenside fianchetto b3 remains a viable path, evaluated at +0.42 across 173K recorded games (6.5%), continuing with b3 c5 e3 e6 Bb2 Nf6.