About This Puzzle

This Extreme Sudoku is one of the hardest types. It requires expert-level logic and advanced elimination techniques. Some puzzles at this level are so complex that even experienced solvers may struggle.

How to Solve

• Use uniqueness tests, Almost Locked Sets (ALS), and Kraken techniques to eliminate possibilities.
• Expect long chains of deductions before placing a single number.
• Be patient—solving this puzzle requires time and careful analysis.

Who Is It For?

Only the most dedicated Sudoku enthusiasts should attempt this level. If you complete it, you can truly call yourself a Sudoku master!