Michael Rios

Mensa® Sudoku for the super-smart! Mensa members are known for their finely-honed logic skills—and that's just what it takes to become an expert at sudoku. It's no surprise that this organisation for the highly intelligent has put together a huge collection of these sizzling-hot puzzles—a whopping 534 games to sate the obsessed solver's craving. The puzzles start out relatively easy...