a) Six different rectangles, none a square, have all integer sides chosen from a, b, c, and d. If I take any two of these rectangles with no common side (there are three ways of doing this), the possible sum of their two areas is 34, 38, or 43. What are a, b, c, and d? b) Can the sums of the area...

Me and a friend of mine named O were once trapped in a room with a shapeshifter (long story). I had a gun (even longer story), which was good because me and O needed to kill the shapeshifter (possibly the longest story?) Unfortunately for us, the shapeshifter had transformed into the perfect lik...

This is a simplified version of this physical puzzle. I believe it captures the essence at much reduced complexity. Please, forgive my poor drawing skills. The goal is disentangling the orange torus from the other stuff. The other stuff being the red double torus and the grey string with balls a...

Letters from Gladys are geography-themed standalone crosswords. Each puzzle has five thematic answers, which are places, sights or landmarks in or around a certain location (in this case, a desert). Each thematic answer is notable enough to have its own article in the English Wikipedia, although...