// Backtracking + Constraint Satisfaction Problem
Sudoku Solver
Applied AI Demo · Backtracking + CSP
Enter your own puzzle by hand or load a ready-made example. Image recognition is available only in the local GitHub app.
01
Enter digits or load an example
Your Puzzle
Type digits 1-9 into the board. Leave unknown cells empty.
02
Start Options
Use your own digits or begin from a prepared puzzle.
Manual input
Click a cell, type one digit, and move through the board at your own pace.
Ready-made examples
Load one
Image recognition
Sudoku from a photo
This website does not upload or process images. Download the GitHub project to run OCR locally on your computer.
Download from GitHub
03
No solution yet
Solution
The solved board appears here.