Magic Square 15-Puzzle Bookshelf Covers

Magic Square 15-Puzzle Bookshelf on Make A Gif

Finally, after at least a couple years after the concept popped into my brain, I have completed the Magic Square/15-Puzzle Bookshelf Covers. Before we moved to Madison we picked up this Ikea bookshelf. Long before we got one, the 4×4 design immediately led me to think about the two aforementioned number puzzles that utilize such a grid.
I collected a whole bunch of cardboard scrounging through our apartment’s recycling bin. Each square is two layers with the corrugation crossed to increase the strength and magnets glued to the back.
Square back
I wanted a solution to attaching them to the bookshelf without damaging it, so they could be removed later if we wanted.
I finally decided to go with can lids with holes poked through like buttons, stirring straws affixed to the back to better hold them in place, and then tied around the back with fishing line.
can buttons
Here is a magic square arrangement.
magic square
And here’s a solved 15-puzzle position:

Leave a Reply

Time limit is exhausted. Please reload the CAPTCHA.