[72dpi] [150dpi] [PDF]
This puzzle is inspired by a puzzle by Diego Uribe of Argentina, which was described (with attribution) by puzzle master Nob Yoshigahara in his PUZZLETOPIA Special (1992). See the generalized series of puzzle by Serhiy Grabarchuk.
The goal is to fold the square puzzle so that one side looks like this:
In other words, the final silhouette is a square, and if we divide that square into quarters (2×2 grid), then two opposite quarters are half filled (near the square corners) with the cyan grid (no black or magenta lines or text) and the rest is blank on that side.
The other side of the folding can have any pattern. You do not need to achieve a specific scale factor of the folded square relative to the original square. You can fold anywhere. No cutting.
In this puzzle, you must make a sequence of simple folds. A simple fold folds the paper along a single straight line, rotating some number of layers of paper by 180° about that line. The fewer simple folds you allow, the harder the puzzle. In particular, we rate the following difficulties:
| Number of simple folds | Difficulty |
|---|---|
| 4 | HARD |
| 6 | MEDIUM |
| 8 | EASY |
Numbers in between are also possible. For example, 5 folds is a good step toward 4.
The puzzle was designed for color printing, but it will work on a black-and-white printer.
The PDF file is the best combination of printing quality and small file size. You will need a suitable viewer. Alternatively, you can print one of the images. If you can print images scaled to fit, use 150dpi. Otherwise, use 72dpi.
