The Excalibur puzzle challenge continues as players work through clues and problem-solving steps to find a solution.

If you ever fell asleep mad at a problem and woke up with a solution, your brain probably pulled an overnight problem-solving shift without actually clocking in. Now, researchers are trying to guide ...

Most crossword puzzle fans have experienced that moment where, after a period of struggle on a particularly difficult puzzle, everything suddenly starts to come together, and they are able to fill in ...