Queen's Indian Pin Chess Puzzles

The Queen's Indian Pin is a motif from the Queen's Indian Defense where Black develops the bishop to b4 and pins White's knight on c3 to the queen or to a key central defender. The defining feature is the bishop on b4 creating pressure on c3, often before White has fully completed development. This pin can slow White's central expansion and make moves like e4 or d4 harder to support.