Dutch Defense

After 1. g3, the reply 1...f5 adopts the Dutch Defense's characteristic pawn move against White's kingside fianchetto. The f-pawn stakes a claim to e4, the square that a bishop on g2 most directly targets, and gains kingside space. The cost is the usual one for this pawn move: Black's own kingside is loosened and development of the king's knight and bishop must follow before castling. Because White has not yet committed a central pawn, the game frequently transposes into a recognized Dutch structure rather than staying in independent territory.

The usual continuation is 2. Bg2, completing the fianchetto at once. The other main choice, 2. d4, reaches the Dutch Defense: Fianchetto Attack directly, and the two moves often meet by transposition. 2. Nf3 and 2. b3 are rarely played, although White has scored well with both in online games. The engine gives White a slight edge after 1...f5, preferring Nf3, d4 and Bg2, and in Lichess games White wins somewhat more often than Black, with draws uncommon.