Petrov's Defense: Modern Attack, Bardeleben Variation

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qe2 Nc5 6.Nxd4 Nc6

ECO C43

The Petrov's Defense: Modern Attack, Bardeleben Variation is a chess opening line in the Petrov's Defense complex, reached after 1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qe2 Nc5 6.Nxd4 Nc6.

It is catalogued under code C43 in the Encyclopaedia of Chess Openings (ECO).

The defining move Nc6 is chosen by Black on move 6.

Study this line with a grandmaster

This position is covered in the Beat the Petroff 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.