About Sudoku Solver

This site contains Sudoku Solver, a very useful application which is able to solve sudoku step-by-step and give you an explanation of each step.

If you have any questions or suggestions, please write an email to solver@sudoku.org.pl or use the contact form.

The following techniques are supported:

• Hidden Single
• Naked Single
• Locked Candidate
• Hidden Pair
• Hidden Triple
• Hidden Quad
• Naked Pair
• Naked Triple
• Naked Quad
• X-Wing
• Swordfish
• Jellyfish
• Color Trap
• Color Wrap
• Color Wing
• XY-Wing
• XYZ-Wing
• XY-Chain
• Finned X-Wing
• Finned Swordfish
• Finned Jellyfish
• Empty Rectangle
• Aligned Pair Exclusion
• Almost Locked Set
• Unique Rectangle

The following types of sudoku are supported:

• Classic Sudoku 9x9
• Sudoku X
• Sudoku Y
• Sudoku Mini