A few of many testimonials and accolades from puzzle enthusiasts.

"Hi Andy,
Thank you very much for sending the set of your puzzles to me. I am glad to have a set of your five beautiful puzzles in my Puzzle Museum. You have done an excellent job of making the packages quite attractive with beautiful wooden boxes. The wooden puzzles themselves are also nicely made of wood. The puzzles will make very attractive gift items and puzzle collectors will really appreciate the nice wooden puzzles and beautiful wooden boxes.
Best wishes,"
Jerry
Slocum Puzzle Foundation, Beverly Hills, CA

"Andy,
I enjoyed solving your 4x4x4 cube puzzle. I was entertained for many hours making all types of shapes. Thought I would share my cube solution with you in a Visio graphic converted to a GIF file.
Thanks for the wonderful puzzle. I will recommend it to everyone I know that likes puzzles."
Dan Thomasson
Charlotte, NC

"I think that one reason for the greater popularity of this puzzle is that it has multiple solutions, so people can feel some sense of accomplishment along the way ... Single solution puzzles are a bit too "all or nothing" so there is no gradient sense of achievement. "
David Gwillim
Programmer/analyst and puzzle aficionado

"Andrew,

Just to let you know, I've really enjoyed the set of puzzles. CalmPlex: I've never been a big fan of pentominoes, but I was able to make it into a cube. Still can't get the checkerboard though.

Your puzzles are ingenious. Superb craftsmanship. Challenging. Can't wait to see your next puzzle.

Feel free to quote me. A lot of puzzle people know me."
Tom Cutrofello, NY

"Dear Andy,

I built the wooden cube puzzle and I can not solve it. I've turned to you for help because it was you, after all, who unleashed the puzzle upon the world, and I feel that makes you at least partially responsible for the terrible consequences it hath wrought.

It has been weeks or possibly even months (it's difficult to tell) since I've gotten a full night's sleep. And every waking moment I am distracted with thoughts such as "hmmm... maybe the 'H' shaped piece fits here...". And the brief snatches of sleep I am able to manage are tormented by haunting dreams of small wooden cubes that never quite form a perfect 4x4x4 cube. I realize it is (mostly) my own fault, but I am unable to free myself from this burden, and there is no one else to whom I can turn. Please Sir, please share with me the solution to your infernal puzzle."
Chris, UT