Square Puzzle plan - How to make Square Puzzle

The Square Puzzle, shown correctly assembled in Fig. 25, is another interesting puzzle to make.
It requires nine blocks. Figure 26 shows

The Patterns. If you will trace off the patterns as shown in Fig. 27, with the blocks, placed end to end, you can prepare a strip of the right width to take in the blocks and then saw it up. These blocks must be carefully finished so they will be of exactly the right size, or they will not fit together nicely to
make the square.


Excerpt from the book: "Carpentry & mechanics for boys: up-to-the-minute handicraft" by Hall, A. Neely (Albert Neely), Publication date [c1918]
Publisher Boston : Lothrop, Lee & Shepard Co.