Modern Defense: Standard Defense

1.e4 g6 2.d4 Bg7 3.Nc3 d6

ECO B06

The Modern Defense: Standard Defense is a chess opening line in the Modern Defense complex, reached after 1.e4 g6 2.d4 Bg7 3.Nc3 d6.

It is catalogued under code B06 in the Encyclopaedia of Chess Openings (ECO).

The defining move d6 is chosen by Black on move 3.

Study this line with a grandmaster

This position is covered in the Modern 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.