Puzzle pageTiling troubles
Puzzle pageCrack a code with Enigma
Puzzle pagePlus magazine sudoku
Puzzle pageGreater than sudoku!
Puzzle pageHave a go at this Plus-themed Sudoku variation.
Puzzle pageSudoku around the clock
Puzzle pageOpen your very own can of worms
Puzzle pageShifting large buildings
Puzzle pageA proof with a hole
Puzzle pageDuplex difference Sudoku
Puzzle pageMystery Christmas theft
  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.