Grünfeld Defense: Flohr Variation

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qa4+

ECO D90

The Grünfeld Defense: Flohr Variation is a chess opening line in the Grünfeld Defense complex, reached after 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qa4+.

It is catalogued under code D90 in the Encyclopaedia of Chess Openings (ECO).

The defining move Qa4+ is chosen by White on move 5.

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.