Chess opening · ECO A50
Mexican Defense
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1. d4 Nf6 2. c4 Nc6
Mexican Defense is catalogued under ECO code A50. It is reached after 2 moves (4 half-moves): 1. d4 Nf6 2. c4 Nc6. After the last move it is White to play. White opens 1. d4. It is the defining line of the Mexican Defense family, which has 2 catalogued lines in total.