Vistalgy® Sudoku

More than 70 of classic and new Sudoku designs: - Different Sudoku types: Classic, Diagonal, Hyper, More-or-Less - Different Sudoku shapes: Single, Double, Triple, Zigzag and Samurai - Different Sudoku sizes: 4x4, 6x6, 9x9, 12x12 and 16x16 Compare your results with the results of players from all over the world. Multiple difficulty levels: from beginners to masters.