how to solve hard sudoku puzzles tips To solve a Sudoku puzzle, one must look for cells where only one number is possible, or rows/columns/blocks where a specific number has only one possible placement.
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This method requires careful observation and logical reasoning to find the numbers that can be removed. how to solve hard sudoku puzzles tipssudoku extremely hard Diagonal Sudoku: A standard Sudoku with the additional constraint that the numbers 1 to 9 must also appear in both diagonals.
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