Neo-Grünfeld Defense: Classical Variation, Original Defense

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 c6 6.O-O d5

ECO D78

The Neo-Grünfeld Defense: Classical Variation, Original Defense is a chess opening line in the Neo-Grünfeld Defense: Classical Variation complex, reached after 1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 c6 6.O-O d5.

It is catalogued under code D78 in the Encyclopaedia of Chess Openings (ECO).

The defining move d5 is chosen by Black on move 6.

Study this line with a grandmaster

This position is covered in the Grunfeld Defense course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.