双人翻花绳玩法
到底有多少种双人翻花绳玩法?;P :Q: :victory: http://mathworld.wolfram.com/CatsCradle.htmlhttp://mathworld.wolfram.com/StringFigure.html
http://www.math.wisc.edu/~jeanluc/talks/stolaf2009.pdf
http://www.ifyoulovetoread.com/book/chten_cats1105.htm
http://www.wikihow.com/Play-The-Cat's-Cradle-Game
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