Goodnite Bob Productions is a company that designs and manufactures small-batch puzzles of unusual designs. You can find these puzzles, as well as many other math teaching materials at the SamizdatMath online store .
This puzzle was found in Houdini’s Paper Magic , a book written by the magician and escape artist Harry Houdini. In the book, Houdini devotes a section to paper puzzles in which geometric shapes are dissected and re-arranged to create new shapes. Some of the designs are highly popular, including the well-known Chinese tangram. Houdini named the above puzzle “The Symmetrical Square Puzzle,” and after quite a bit of research, I was unable to locate a version that was manufactured using durable materials. For
A second puzzle that I manufacture is based on the “Lott Stone Puzzle” or the “Sphinx Puzzle,” which is copied from a design by the Anchor Stone Company , which manufactured this pattern during the 18th and 19th century. This pattern is no longer manufactured; antique “stone” versions have been spotted on Ebay. However, you may purchase them individually or in classroom sets of 30 , laser cut from 1/8″ acrylic, at my online teachers’ store, SamizadatMath .