We can sometimes use logic to stretch a little information a long way. Can these small clues tell us everything we need to know about who won this competition?
There are lots of ways to add to nine, but is it possible to make it happen twice in this puzzle?
Art needs protecting and so art galleries need guards. How many does this one need?
"A watched pot never boils" is about psychology, not physics — how can we actually get water to boil sooner?
Adding cold water to hot tea will help to cool it down. When should we do it?
Mathematics is the art of reasoning about patterns, and not all patterns are numerical. What completes this pattern?
Adding additional lines to a diagram can turn a challenging problem into something far simpler.
