These math puzzles test your brain and critical-thinking ... This is a number puzzle kind of like sudoku. Fill in the 5 x 5 ...

Experience math in a whole new way. We'll play fun and challenging problem-solving games and puzzles from around the world, including Ancient China and Egypt, Europe, Asia, Africa and the Americas. We ...

Other Sudoku players have the ability to "switch off their minds to the outside world and focus for hours to solve Sudoku ...