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This technique requires you to identify a 3x3 grid where four rows share the same number in different columns. free sudoku solverwing sudoku Find the Swordfish Chain: Once you have identified the Swordfish pattern, you need to find the Swordfish chain. Here are some key rules to remember: Each row, column, and 3x3 region must contain all the digits from 1 to 5. usatoday puzzles sudoku When three cells in a row or column have the same three numbers, and these numbers are not present in any other cells of the same rows or columns, it is a Swordfish. usa sudoku puzzle
