Ninjo Sudoku

Ninjo Sudoku X

Ninjo Sudoku is an extension of the standard Sudoku Puzzle. It comprises 4 interlocking Sudoku Grids which are dependant on each other. The puzzle is solved using the same logic as a Sudoku Puzzle however it is important that the puzzle is solved as a whole and not just as 4 individual puzzles. Ninjo Sudoku puzzles are available as Standard puzzles or "X" puzzles where, additionally, all the digits 1-9 must appear in the diagonals of each of the Sudoku Puzzles within the Ninjo Sudoku. See the examples above. Ninjo and Ninjo X Sudoku are available in a range of grades of difficulty, depending on the number of digits in the unsolved puzzle grid.


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