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Start with a blank board

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Instructions for Sudoku

This Sudoku playing board will help you solve the puzzles.

  1. The goal of the game is to choose a number for each square such that no digit appears twice in any row, column, or section.
  2. Start a new game with your desired level of difficulty.
  3. Click on a possibility to choose that number for the square. The possibility will be removed from other squares in the row, column, and section.
  4. Hold down control, alt, or shift to and click on a possibility to remove the possibility from the square, but not mark the square.
  5. Click on an assigned number to remove it from the square and put back any possibilities.
  6. Use the colors however you wish. You may find it helpful to switch the color whenever you guess.