SOLVER
Sudoku Solver & Step-by-Step AI
Enter any puzzle to calculate instant solutions or step-by-step human logical reasoning.
Sample Puzzle:
1-9:
How to Use the 8090 Sudoku Solver
1. Enter Given Numbers
Click cells on the grid and enter given numbers from any newspaper, magazine, or book.
2. Step-by-Step Logic
Click "Next Logic Step" to learn human strategies like Naked Singles or Box Reductions.
3. Instant Solve
Click "Solve Instantly" to calculate all 81 numbers via exact DLX backtracking.