There are 64 cards in the deck. All of the cards are constructed according to a simple rule. I wondered if the Izzi deck contains all the possible cards that could be made with that rule. What does it make you wonder about?
What if it was based on triangles, instead of squares?
I made a complete set of tiles using a laser cutter. An example challenge is to try getting the dark and light borders to match in a hexagon configuration. This photo does not show a solution, but a solution exists.