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Published on Sep 11, 2012
Constrained Cubes are now available here- http://tinyurl.com/constrainedcube Mechanism revealed here- http://www.youtube.com/watch?v=Fmlhx4... The Ultimate and 180 versions are shown in my video. Please watch carefully to see how they work. The other two available but not shown are the 90 and 270 versions. The numbers refer to the maximum number of degrees you can turn a face. The video shows the unboxing, demo and review including a corner cutting test. The puzzles were invented by Tom van der Zanden and mass produced by Calvin's puzzles.