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IQ智慧棒
一个线圈比棒短的魔术棒在魔术师手中几下就能套住观众衣服扣眼，
无论观众怎么解都解不开！
一根不同线圈比例的棒子是怎么穿进去又出来的呢???
Buttonhole Puzzle - Wood
This is a famous puzzle from the 1920’s. Once the stick and string are placed in a button hole, its seems impossible to get off! Can be quite mystifying and fun.
First used by an insurance salesman to get customer’s attention. If you have ever heard the expression “you’ve been buttonholed”, it came from this puzzle!
