Bill Cutler is a renowned puzzle inventor, expert and collector. He is famous for his comprehensive research and analysis of the burr puzzles. In the early 1980’s Bill wrote his first program to take apart interlocking puzzles made from cubes, and this led to the 3 year analysis of all 35.5 billion 6-piece burrs.  

Run by the husband-and-wife team of Mike & Gill Hayduk, this UK-based family business started over 30 years ago – in distant 1987. Initially the business was focused on making house signs, but following a request for a jigsaw puzzle from the couple’s children, by 1989 everything turned to be puzzles only.  

Started in Seattle, WA in 2009 and then moved to Menlo Park, CA in 2014, the company is a long-running experiment in the economics of micro-manufacturing.  

Run by Dyann K. Schmidel, the Quiz Hub features a collection of interactive quizzes in a range of topics and for different age groups at K-12 levels…

This website is founded and run by Marcel van de Wouw. Originally the site started as a hobby – Marcel created games for his own kids. Eventually the site has grown to the level it is now used by many children and teachers from all over the world. This gave Marcel the chance to quit […]

A very comprehensive blog on matchstick puzzles. Every week or two a new puzzle is posted. The diversity of the presented matchstick puzzles is quite impressive…

This prolific and highly specialized SOMA puzzle website is continuously run since 1998 by Thorleif Bundgaard – a college teacher in mathematics, electronics and technology.  

A Cryptex® Security Box is a self-contained cylindrical lockbox. Master artisan Justin Nevins created the first Cryptex® Security Box in 2004, and has been producing them for fans of the device, escape rooms, and for art collectors around the world ever since.

As a US-based company Bits and Pieces traces its roots back to 1983 when it started to supply adults and kids alike with unique jigsaw puzzles, brain teaser puzzles and gift ideas through their mail order catalog.  

This is a husband-and-wife online puzzle shop started by Mike and Mary way back in 2004. The family team performs a great job of bringing puzzle boxes from all over the world to the USA…

In 1997 puzzle enthusiasts Wei Zhang and Peter Rasmussen of Berkeley, California, traveled to Suzhou, the famous city of canals near Shanghai. They were searching for an old craftsman mentioned in a forty-year-old Chinese puzzle book…