http://www.puzzleworld.org/SlidingBlockPuzzles/abe.htm
Years ago I solved the Egg Puzzle online. At the IPP in Japan, I was fortunate to find somebody selling the real McCoy. Pay attention to the notches - some moves cannot be made with simple square pieces.
在莫非定律中有項笨蛋定律：「一個組織中的笨蛋，恆大於等於三分之二。」. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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