Sicilian Defense: Kopec System

1.e4 c5 2.Nf3 d6 3.Bd3

ECO B50

The Sicilian Defense: Kopec System is a chess opening line in the Sicilian Defense complex, reached after 1.e4 c5 2.Nf3 d6 3.Bd3.

It is catalogued under code B50 in the Encyclopaedia of Chess Openings (ECO).

The defining move Bd3 is chosen by White on move 3.

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.