Puzzle dos 15
Por um escritor misterioso
Descrição
Sliding puzzle - Wikipedia
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The 15-Puzzle and the symmetric group
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The 15 Puzzle consists of 15 squares numbered from 1 to 15 which are placed in a 4x4 box leaving one position out of the 16 empty. The goal is to
15 Puzzle
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Premium Vector Puzzles grid jigsaw puzzle 20 15 12 and 9 pieces
