Grünfeld Defense

1. d4 Nf6 2. c4 g6 3. Nc3 d5

Grünfeld Defense is catalogued under ECO code D80. It is reached after 3 moves (6 half-moves): 1. d4 Nf6 2. c4 g6 3. Nc3 d5. After the last move it is White to play. White opens 1. d4. It is the defining line of the Grünfeld Defense family, which has 59 catalogued lines in total. 5 deeper lines continue from here, listed below.

Position shown after the last move; White to play.