A geometry problem over a century old has just found its definitive answer. Mathematicians have confirmed that the solution ...

The chess puzzle in Blue Prince revolves around a rectangular chess board and chess pieces found around the house. Once ...

Putting the last piece of a project together and finally finishing it up is a satisfying feeling. When the last piece of a puzzle like that is a literal puzzle, though, it’s even better.

If you have a laser printer, you’ve got your Christmas presents sorted out. At least if your family likes jigsaw puzzles. The idea is very simple, laminate a photograph onto some laser-cuttable ...