Solving the Rubik’s Cube optimally is NP-complete

In this paper, we prove that optimally solving an n × n × n Rubik’s Cube is NP-complete by reducing from the Hamiltonian Cycle problem in square grid graphs. This improves the previous result that optimally solving an n×n×n Rubik’s Cube with missing stickers is NP-complete. We prove this result firs...

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Bibliographic Details
Main Authors: Demaine, Erik D, Eisenstat, Sarah Charmian, Rudoy, Mikhail
Other Authors: Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Format: Article
Language:English
Published: Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik 2019
Online Access:https://hdl.handle.net/1721.1/121410