Four Knights Game Pin Chess Puzzles

A four knights game pin is a pin that appears in the Four Knights Game, usually after the opening moves 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6, when one side develops a bishop or queen to pin a knight against a more valuable piece or the king. The defining feature is that the pin happens in a symmetrical, fast-developing opening where both sides have knights on c3 and f3/c6 and f6, so the pinned knight often becomes a target before the center is fully resolved.