### Did you solve it? The incredible sponge puzzle

Earlier today I set you the following puzzle, about the intriguing mathematical cube that is the Menger sponge. (To find out how to construct it, you can read the original post here.) When you slice the Menger sponge in two, what does the hexagonal cross-section look like? Here’s the Menger sponge. Illustration: Edmund Harriss/Visions of…