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The Réti Opening is a hypermodern chess opening whose "traditional" or "classic method" begins with the moves: 1. Nf3 d52. c4 White attacks Black's pawn from the flank, which may occasion 2...dxc4. White may couple this plan with a kingside fianchetto (g3 and Bg2) to create pressure on the light squares in the center. In the Encyclopaedia of Chess Openings, Réti Opening is classified as codes A04–A09, where it is closely associated with the King's Indian Attack.