Alekhine Defense Discovered Check in Chess

In the Alekhine Defense, an “alekhine defense discovered check” happens when a piece’s line is opened by a move (often a pawn advance or capture) and the newly revealed line immediately gives check. A defining feature is that the check is not delivered by the moving piece itself, but by a different piece that becomes unblocked along a rook, bishop, or queen line. For example, after the typical Alekhine setup with ...d5 and tactical breaks, a discovered line can suddenly appear against the white king.