Alekhine Defense Interference in Chess

Alekhine defense interference is a tactical idea in the Alekhine Defense where a move forces a piece to block a line (often a diagonal or file), preventing the defender’s intended support. In many Alekhine Defense structures, after 1.e4 Nf6 2.e5 Ne7, the move ...d5 or ...Nf5 plans can hinge on lines opening—interference disrupts that plan by “getting in the way” of the defender’s piece.