sudoku box line reduction Form the chain: Connect the 'X' and 'Y' cells with the third cell, creating an 'X' and 'Y' intersection.
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sudoku box line reduction How to Find Easy Sudoku Puzzles Easy Sudoku puzzles can be found in a variety of formats, including newspapers, magazines, and puzzle books. These techniques involve identifying patterns of numbers in rows and columns that can be used to eliminate possibilities in other cells. valid sudoku leetcode
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