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Recent questions tagged 3-puzzle

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1
Consider a 3-puzzle where, like in the usual 8-puzzle game, a tile can only move to an adjacent empty space. Given the initial state 1 2 3 which of the following state cannot be reached? A 3 1 2 B 3 2 1 C 1 3 2 D 2 1 3
asked Aug 21, 2016 in Others jothee 1.9k views
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