This is the standard Sudoku

Rules:

  • Every row and every column shall contain all digits 1 to 9 (no duplicates).
  • The 9 squares shall contain all digits 1 to 9 (no duplicates).

The solver will always find a solution if it exists. If you press 'Solve', the solver will indicate that there is no solution, one solution, or more than one solution.

©2011, 2014 Renze de Waal.