Play Sudoku
Sudoku Rules:
1. Each cell must be filled in with a number between 1 and 9.
2. When the puzzle is complete, each row, column, and box must contain each number 1-9.
3. A row, column, or box cannot contain the same number more than once.
Features Explained:
Notes: When checked, you can input notes in small font.
Keyboard shortcut: N
Auto-check: The solver will automatically check your inputs. Red means incorrect, blue means correct.
Keyboard shortcut: A
Dark mode: Darkens the grid and background.
Keyboard shortcut: D
Explanations: If you use the solver to finish the sudoku, in-depth explanations will be added to explain each step that the solver took.
Keyboard shortcut: E
Solving Options:
Check answers:
Press enter or click the check answers button to check your answers. Correct numbers will appear in blue, and incorrect numbers will appear in red.
Solve completely:
All unsolved cells will be filled in with the correct number. A step-by-step explanation of how to solve the sudoku will replace the sudoku rules box.
Next step:
The solver will fill in the next step of the puzzle if you are stuck.
Clear grid:
Resets the puzzle to its original numbers.
Solve cell:
Enter the coordinates of an unfilled cell (example: 'A1'). The solver will input the correct number into this cell.
