On April Fools’ Day, the exozyme homepage was completely blank. Or was it? The puzzle is no longer up on that homepage, but you can still find it here. Good luck! The solution will be posted next month.

Solution the origami puzzle

I accidentally screwed up the order of the tasks and placed the most hardest thing first and the easiest last… oops. I guess we’ll start with the last task then.

First fold the paper into quarters to form a 4 by 4 grid. Now you can simply fold a 3 by 4 right triangle using this grid, and tuck away the excess paper. If you want an extra challenge, try folding the largest possible 3-4-5 triangle!

For the next task, Locria Cyber solved it and provided a helpful diagram:

Fold the bottom edge up so the left corner meets the center vertical line

Again, if you want another challenge, try folding the largest possible equilateral triangle.

Finally, the last task has multiple solutions. Here’s the simplest one:

Fold a 1 by 1 triangle and a 1 by 1/2 triangle, and their intersection point is at (1/3, 1/3)

Locria Cyber found a YouTube video with another solution which uses one fewer fold. Here’s how it works:

Uh… this one is complicated

The yellow and teal triangles are similar, and the purple and orange triangles are similar. After some calculations using the similar triangles, you can show that the vertical side length of the purple triangle is 1/3.