Nimzo-Larsen Attack: Dutch Variation is a chess opening with the ECO code A01, part of the Nimzo-Larsen Attack family. It goes 1. b3 f5. White opens with 1. b3 (the Nimzo-Larsen move) and Black answers 1... f5. After 2 moves it is White to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
White starts with 1.b3 and Bb2, controlling e5 and the long diagonal from afar. It is an offbeat but respectable flank opening.