Alekhine Defense: Four Pawns Attack, Korchnoi Variation

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Bf5 7.Nc3 e6 8.Nf3 Be7 9.Be2 O-O 10.O-O f6

ECO B03

The Alekhine Defense: Four Pawns Attack, Korchnoi Variation is a chess opening line in the Alekhine Defense complex, reached after 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Bf5 7.Nc3 e6 8.Nf3 Be7 9.Be2 O-O 10.O-O f6.

It is catalogued under code B03 in the Encyclopaedia of Chess Openings (ECO).

The defining move f6 is chosen by Black on move 10.

Study this line with a grandmaster

This position is covered in the Alekhine: Four Pawns Attack 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.