Challenge Sudoku Tweet Description 50 different Sudoku challenges. Three different ways to play: Standard, Challenge and Solitaire Sudoku. Details Ages: 7 and up Category: Abstract Strategy, Deduction Designer: Leo Colovini, Dario de Toffoli, Dario Zaccariotto Family: Sudoku Mechanics: Pattern Building, Pattern Recognition Publisher: Clementoni, Venice Connection Time: Year: 2005
