Sudoku rules: A: vertical only a 1 to 9 can not be repeated B: The same horizontal 1 to 9 can not be repeated C: This graph is composed of 9 3x3, 3x3 …
Sudoku rules: A: vertical only a 1 to 9 can not be repeated B: The same horizontal 1 to 9 can not be repeated C: This graph is composed of 9 3x3, 3x3 …