Alekhine Defense: Modern Variation, Keres Variation

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Bc4 Nb6 6.Bb3 Bg7 7.a4

ECO B04

The Alekhine Defense: Modern Variation, Keres Variation is a chess opening line in the Alekhine Defense complex, reached after 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Bc4 Nb6 6.Bb3 Bg7 7.a4.

It is catalogued under code B04 in the Encyclopaedia of Chess Openings (ECO).

The defining move a4 is chosen by White on move 7.

Study this line with a grandmaster

This position is covered in the Alekhine 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.