Alekhine Defense: Four Pawns Attack, Cambridge Gambit

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g5

ECO B03

The Alekhine Defense: Four Pawns Attack, Cambridge Gambit 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 g5.

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

The defining move g5 is chosen by Black on move 5.

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.