14.6 cm x 9.7 cm x 1.2 cm / 5.8 in x 3.8 in x 0.5 in
How can a 4 piece puzzle be so difficult??. All you have to do is insert them into the frame… It is a Stewart Coffin design (#217) originally called “Four Fit” but renamed by Stewart after Martin Gardner’s week long efforts to solve it were in vain. Martin Gardner (1914-2010) is considered the Father of Recreational Math with perhaps the greatest puzzle mind of the 20th century. Martin called it “The finest dissection puzzle of all time”.
The ¼” thick pieces are precision laser cut and set unsolved into a floorboard base. The base measures 5.8” x 3.8”
Made in USA by Creative Crafthouse under license from Stewart Coffin.