ECO C00

Rat Defense: Small Center Defense

Rat Defense: Small Center Defense is a chess opening classified under ECO C00. Its defining line here is 1. d4 e6 2. e4 d6.

Rat Defense: Small Center Defense — board position♜♞♝♛♚♝♞♜♟♟♟♟♟♟♟♟♟♟♟♟♟♟♟♟♜♞♝♛♚♝♞♜

1. d4 e6 2. e4 d6

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The diagram shows the position after 1. d4 e6 2. e4 d6. 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.