Author:
Hanaoka Erika,Sadahiro Taizo
Subject
Applied Mathematics,Discrete Mathematics and Combinatorics
Reference2 articles.
1. Finding a shortest solution for the N×N extension of the 15-puzzle is intractable;Ratner,1986
2. Graph puzzles, homotopy, and the alternating group;Wilson;J. Combin. Theory Ser. B,1974