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Sudoku

Fill the grid so that every row, column, and 3x3 box contains the digits 1 to 9.

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How to Play

Click on a cell to select it, then use the number pad (or keyboard 1-9) to fill it.

  • Initial numbers cannot be changed.
  • Selected cell is highlighted in blue.
  • Same numbers are highlighted to help you spot patterns.
  • Conflicts (duplicates in row/col/box) are highlighted in red.