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Sudoku

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How to Solve a Sudoku Game

1:22

Molecube: The Colorful Sudoku Puzzle Cube

3:34

How to create your own Sudoku Pattern

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Free Online Sudoku Puzzles

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How to Solve Medium Sudoku Puzzles (Pt. 2)

Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.
  • History 

  • Variants 

  • Mathematics of Sudoku 

  • Competitions