Sicilian Defense: Moscow Variation, Haag Gambit

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.c3 Nf6 7.d4

ECO B52

The Sicilian Defense: Moscow Variation, Haag Gambit is a chess opening line in the Sicilian Defense complex, reached after 1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.c3 Nf6 7.d4.

It is catalogued under code B52 in the Encyclopaedia of Chess Openings (ECO).

The defining move d4 is chosen by White on move 7.

Study this line with a grandmaster

This position is covered in the The Moscow 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.