| proposed by | Ian Gent ipg@cs.st-and.ac.uk |
The home page of the Alien Tiles puzzle is www.alientiles.com.
Symmetry Breaking in the Alien Tiles Puzzle
Apes Research Report 22-2000,
I.P. Gent, S.A. Linton and B.M. Smith, October 2000.
(Bibtex entry),
(pdf).