ECO C42

Petrov's Defense: Three Knights Game

Petrov's Defense: Three Knights Game is a chess opening classified under ECO C42. Its defining line here is 1. e4 e5 2. Nf3 Nf6 3. Nc3.

Petrov's Defense: Three Knights Game — board position♜♞♝♛♚♝♜♟♟♟♟♟♟♟♞♟♟♞♞♟♟♟♟♟♟♟♜♝♛♚♝♜

1. e4 e5 2. Nf3 Nf6 3. Nc3

Explore this opening ▸Add to my repertoireOpen in analysis

The diagram shows the position after 1. e4 e5 2. Nf3 Nf6 3. Nc3. Play through it move by move in the interactive explorer.

Opening name, ECO code, and main line come from the Lichess open chess openings dataset.

Part of