Grünfeld Defense: Russian Variation, Keres Variation

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4 8.Be3 Nfd7 9.Be2 Nb6 10.Qd3 Nc6 11.O-O-O

ECO D98

The Grünfeld Defense: Russian Variation, Keres 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.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4 8.Be3 Nfd7 9.Be2 Nb6 10.Qd3 Nc6 11.O-O-O.

It is catalogued under code D98 in the Encyclopaedia of Chess Openings (ECO).

The defining move O-O-O is chosen by White on move 11.

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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.