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The Damiano Defence is a chess opening beginning with the moves: 1. * e4 e5 2. * Nf3 f6? The defence is one of the oldest chess openings, with games dating back to the 16th century. It is a weak opening that gives a large advantage for White after 3.Nxe5. Even if White does not go for this continuation, simple development leads to an advantage since 2...f6 weakened Black's kingside as well as took away the best square for the g8-knight. The ECO code for the Damiano Defence is C40 (King's Knight Opening).