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scientific american killer sudoku The goal is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids that compose the grid contain all of the digits from 1 to 9. answer of sudoku Practice and patience are key to mastering the Swordfish technique, and with time, you will become a Sudoku pro in no time! free sudoku printable pdf Samurai Sudoku: This unique variation features five interlocking Sudoku grids within a larger 16x16 grid, adding a strategic element to the puzzle.
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