Permutation Puzzle Links

David Singmaster's page	Herbert Kociemba's page
Masterball's inventor, Dr Gyovai	Istvan's cube page
Jaap's Puzzle Page	solution of the 3x3 cube by Lars Petrus
More solutions to the cube	Mark Longridge's cube site
Michael Reid's cube page	Martin Schoenert's cube page
Georges Helm's site	Christian Eggermont's page with stuff on the pyraminx, square 1, Rubik's cube and related puzzles

Rubik's cube like sites:

history of mathematical games
Philip Osterlund, while a grad student at Univ. Minn., wrote the GAP (version 3) package Abstab.g which could be used to help solve the Rubik's cube (and other permutation puzzles). According to Alexander Hulpke: "AbStab has not been ported to GAP4. However (as of GAP4.4) the code for expressing elements as words in generators has substantially improved, utilizing methods similar to AbStab. (e.g. for Rubik's Cube I obtain length ~100 words). I am not aware of any general approach (i.e. not tuned to Rubik's cube) that does essentially better." See section 5 of chapter 37 of the GAP reference manual for information on GAP commands related to this.
Information on the program GAP, which is useful for investigating the group theory behind these types of puzzles, can be found in GAP examples or GAP .)
A Square 1 puzzle page. (Jim McShea and I have written a paper on the mathematics of the Square 1 puzzle - "The homotopy group of the square 1 puzzle" (see section 13.5 in the third printing of the book Adventures in group theory.)
a Rubik's cube java applet
a 4-dimensional Rubik's cube

Last revised 9-16-2007.