Chess opening · ECO A09
Réti Opening
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1. Nf3 d5 2. c4
Réti Opening is catalogued under ECO code A09. It is reached after 2 moves (3 half-moves): 1. Nf3 d5 2. c4. After the last move it is Black to play. White opens 1. Nf3. It is the defining line of the Réti Opening family, which has 43 catalogued lines in total. 3 deeper lines continue from here, listed below.