Indian Defense Interference in Chess

Indian defense interference is a tactical idea where one piece (often a pawn or minor piece) blocks or disrupts a line needed by another piece in the Indian Defense structure. A defining feature is the clash around the central/dark-square lines after moves like ...Nf6, ...e5 (or ...c5), and typical pressure from ...Bb4 or ...b6–...Bb7. The “interference” happens when a move forces a defender’s piece to stop guarding a critical square or file.