The nine rectangles A, B, C, D, E, F, G, H and I overlap one another. Rectangle A intersects rectangles D and F; this ...

Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. There are two types: Riddler Express for those of you who want ...

You've got a lot of decisions to make as you build that leftover turkey sandwich. White or wheat? Mustard or mayo? How about cranberry sauce? One decision you'll probably make with ease is whether to ...

Well, what is the best way to cut a sandwich in half? Surely triangles don't really have "more sandwich," right? That's geometry and the law of conservation of matter. But something about the ...

A puzzle posted in an online community unlocked a wormhole within the basic shape. Credit...Ian Henderson Supported by By Siobhan Roberts Lisanne Taams, a student at Radboud University in the ...

Start with easy patterns—rectangles and squares, to make time-saving bags and totes. Nancy creates time-saving gifts such as a cosmetic bag, tote, and luggage saddlebag using comparable sewing steps, ...

You have four squares that you can place on a large, flat table. You can place the squares so that their edges align, but their interiors cannot overlap. Your goal is to position the squares so that ...

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Have you perfectly curated your Instagram feed based on the app's square grid? Well, we have some bad news for you as that is all set to change, with the social media platform announcing that it is ...

Label the rectangles correctly with the letters A to I. Show puzzle solution Only the four yellow rectangles intersect three other rectangles, and therefore they must be F, G, H and I. H doesn’t ...