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The objetive is to pack fifteen 2x2x1 (60 uc) bricks into a 4x4x4 cube (64 uc) in such a way that none of them can slide in any direction. This puzzle was the second place winner at the 1994 Hikimi Puzzle Competition in Japan.
15 plus box. The are solutions also with only 14, 13, or 12 pieces.
Bill Cutler analized the puzzle and this are the results:
This puzzle is very difficult. | |||||||||||||||||||||||||||
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