Animals 11:
A n o t h e r E x a m p l e
References
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Aaron F. Archer, A Modern Treatment of the 15 Puzzle, Amer. Math.
Monthly 106 (1999) 793-799
- Richard M. Wilson, Graph Puzzles, Homotopy, and the Alternating
Group, J. Combin. Theory Ser. B (1974) 86-96
- A. Bogomolny,
Puzzles on graphs, from Interactive Mathematics Miscellany and Puzzles
http://www.cut-the-knot.org/do_you_know/graphs2.shtml, Accessed 22 October 2012
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Doug Ensley, supplement to the article
Erich Prisner 2002-2013
