Queen's Indian Discovered Check Chess Puzzles

A Queen's Indian Discovered Check is a tactical motif that appears in Queen's Indian Defense structures when moving a blocking piece reveals a check from a bishop, rook, or queen. It often arises after the queen's bishop is developed to b7 and a piece on the long diagonal or a file is unmasked by a capture or retreat. For an intermediate player, the key idea is that the checking piece was already lined up, and the moved piece simply clears the line.