This Sudoku Solver allows you to solve puzzles using two different modes: Faster Mode (default) for quick solving and Easy/Beginner-Friendly Mode for a more guided experience.
Select your preferred mode by responding to the first prompt with 'Y' for Faster Mode or 'N' for Beginner-Friendly Mode.
This mode solves the puzzle quickly based on the provided input string.
Click to see an example
Enter the 81-character string containing only numbers:
980376410603000070000450800006000048208164000017090060020081900000007000060902704
9 8 0|3 7 6|4 1 0
6 0 3|0 0 0|0 7 0
0 0 0|4 5 0|8 0 0
-----------------
0 0 6|0 0 0|0 4 8
2 0 8|1 6 4|0 0 0
0 1 7|0 9 0|0 6 0
-----------------
0 2 0|0 8 1|9 0 0
0 0 0|0 0 7|0 0 0
0 6 0|9 0 2|7 0 4
This mode allows step-by-step input, providing guidance as you fill in the puzzle.
Click to see an example
X 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
-----------------
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
-----------------
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
Enter an integer (between 0 and 9): 9
9 X 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
-----------------
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
-----------------
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
0 0 0|0 0 0|0 0 0
Enter an integer (between 0 and 9):
(...)
You can test the Sudoku Solver using the example puzzles located in the examples directory. These examples are
provided in *.json files.
- White Text: Puzzle solved successfully.
- Cyan Text: Could not complete the puzzle.
- Red Text: Errors were made while attempting to solve the puzzle.
The Sudoku examples in the examples directory are sourced from Open Sudoku.