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IBM Burr Puzzles - http://researchweb.watson.ibm.com/BurrPuzzles/
Explore known burr puzzles and calculate new ones using the burr calculator. |
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Mr. Puzzle - http://www.mrpuzzle.com.au/
Offers a range of complex wooden burr puzzles and brainteasers. |
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Cubic Dissection - http://www.cubicdissection.com
Interlocking puzzle gallery. Handcrafted wooden puzzles for sale. |
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Pentangle Puzzles - http://www.pentangle-puzzles.co.uk
Designers, manufacturers and distributors of over 150 quality wooden puzzles made in England. |
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Knox Puzzles - http://www.knoxpuzzles.com/
Custom made wooden toys for children, puzzles and games. |