Dutch Defense: Nimzo-Dutch Variation, Alekhine Variation

The Dutch Defense: Nimzo-Dutch Variation, Alekhine Variation is a chess opening classified under ECO code A90 in the Flank Openings family, characterized by moves like 1.c4, 1.Nf3, or 1.f4, aiming to control the center indirectly. It is reached after 5 moves: 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Bb4+ 5. Bd2 Be7. The resulting position leaves white to move.