Construct Puzzle - Interlocking 24 piece Burr Puzzle
The esteemed, interlocking Construct Puzzle is based on an original design called "Chuck" created in 1897 by Edward Nelson. The design consists of 24 non-identical, interlocking Burr pieces. As always, the goal is to find the central piece that unlocks the shape. Then, you may begin the challenge of “constructing” the same shape that you just collapsed!