/ AUSVERKAUFT / Manifold

Well-folded is half done? The challenge is plain and unassuming, starting with a square piece of paper on which is a grid of small squares in black and white, and colored ones in green, yellow, blue, or red, depending on the level of difficulty. The objective is simple: Fold the paper in such a way that, in the end, one side shows all black squares and the other shows only white ones.