Propp Tiles

This CAD model was designed by Oskar van Deventer, copyright (c), 21 January 2026

Propp Tiles is an invention by James (Jim) Propp. A set of domino tiles (1x2) are placed in a 4x4 or 4x5 grid. The tiles have embedded magnets. A magnetic tool is used to lift a group of two or three tiles, rotate them and place them back. This is how the puzzle gets scrambled. This is also how you would need to solve it. It is solved when the numbers a back again to their correct order. If one randomly assembles the puzzle, there is a high probability that the puzzle can't be solved. The question is: what is that probability?

Here are some links about this design.
https://www.youtube.com/watch?v=4oQh2KsfqKY

Feel free to 3D-print an extra sample to give to a friend, as long as you mention the designer and don't charge money.

If you are planning to sell some samples, then please contact me for a license agreement. The royalty fee is 10% of your selling price.

Please do not upload the design to a commercial service, or redistribute the design in any way other than linking to the YouTube video: https://www.youtube.com/watch?v=4oQh2KsfqKY

Enjoy!

Oskar
18 April 2026

Contact: 
https://oskarvandeventer.nl/index_contact.php?subject=Print%20It%20Yourself


