1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. d2d3  5... f8c5  6. c2c3  6... d7d6  7. c1g5 These Bg5-pins are now played in all positions. In my day this was considered superficial, an amateur move that can't resist a pin. Times have changed; I must refresh my chess knowledge.