Show puzzle solution Three airplanes are quite sufficient to ensure the flight of one plane around the world. There are many ways this can be done, but the following seems to be the most efficient.

They want a deep dive into the math – the inputs, not just the outputs. “They’re coming in, and they’re showing a lot of pretty pictures,” said Steve Strnisha, who has worked in public ...

In honor of April Fools’ Day, I offer the puzzling case of the Lesser Fool. In a fictional town, there lived an odd wanderer. People would present him with two amounts of money or goods and ask ...

A carpenter, working with a buzz saw, wishes to cut a wooden cube, three inches on a side, into 27 one-inch cubes. This can be easily done by making six cuts through the cube, keeping the pieces ...