For the real Sudoku lovers and smarties (as the creator’s of Kokonotsu call them) there is a website at kokonotsu with every day a new online Super Sudoku Puzzle.
They call the Super Sudoku “Kokonotsu” which is a 9-letter word and meaning “nine” in Japanese. The difference between Kokonotsu and a normal Sudoku is that there is a fourth and fifth dimensions added to the normal Sudoku. Next to the normal numerals 1 through 9 you have to place in each row, column and 3×3 square.
Kokonotsu adds the two major diagonals. Also, there is a Magic Puzzle [Read More...]