Alekhine Defense Modern Variation Interference in Chess

In the Alekhine Defense Modern Variation, “interference” is a tactical idea where one move blocks or disrupts a line so a key piece can’t defend, recapture, or control a critical square. A defining feature is the Modern Variation’s pressure on the center after 1.e4 Nf6 2.e5 Ne4 3.d4 d6, where lines on the d- and e-files often become tactical highways. The interference motif usually appears when a defender’s piece must stay on a line, and you force it to “get in the way” at the wrong moment.