Petrov's Defense: Classical Attack, Marshall Variation, Chinese Gambit

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 c6 9.Re1 Bg4

ECO C42

The Petrov's Defense: Classical Attack, Marshall Variation, Chinese Gambit is a chess opening line in the Petrov's Defense complex, reached after 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 c6 9.Re1 Bg4.

It is catalogued under code C42 in the Encyclopaedia of Chess Openings (ECO).

The defining move Bg4 is chosen by Black on move 9.

Study this line with a grandmaster

This position is covered in the Petroff 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.