Réti Opening
The Réti Opening is a hypermodern chess opening whose "traditional" or "classic method" begins with the moves:
1. Nf3 d5
2. c4
White attacks Black's pawn from the flank, which may occasion 2...dxc4. White may couple this plan with a kingside... Wikipedia
ECO: A04–A09
Moves: 1.Nf3 d5 2.c4
Named after: Richard Réti
Origin: Réti–Rubinstein, Carlsbad, 1923
Synonym(s): Réti System; Réti–Zukertort Opening