Puzzle pageWhich fits best - a square peg in a round hole, or a round peg in a square hole?
Puzzle page: The Möbius ChallengeSet your beloved heart a-flutter with this mathematical valentine
Puzzle pageTry your hand at some tricky trig!
Puzzle pageCount up your booty of jewels and potions!
Puzzle pageThe 3 3 8 8 puzzle
Puzzle pageA greek soldier, and a persion soldier walk into a battle...
Puzzle pageSimilar triangles and colouring the plane
Puzzle pageBrowse the Plus puzzles