ja Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids contain all of the digits from 1 to 9.
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Step 2: Analyze Rows and Columns Start by examining each row and column for numbers that appear only once. ja By quickly identifying missing numbers and potential candidates, you can focus on more challenging aspects of the puzzle. sudoku on paper