Try to solve a puzzle without any hint
Try to solve a puzzle
Try to solve a complete puzzle set
Try to solve some puzzles in 1 minute
Try to solve 10 puzzles
Try to solve some puzzles in 5 minute
Try to solve 50 puzzles
Try to solve 100 puzzles
Try to solve 50 puzzles without any hint
Try to solve 10 puzzles without any hint
Try to solve 100 puzzles without any hint
Do some maths...
Try to solve some word games...