About This Puzzle

This Challenging Sudoku requires a bit more thinking and introduces more complex logical patterns. While still solvable with patience, it may take longer to complete.

How to Solve

• Look for naked pairs—two numbers locked in two cells, eliminating those numbers from other spots.
• Apply intersection removal, where a number must be in one of two places in a box.
• Keep track of possible numbers with pencil marks to avoid mistakes.

Who Is It For?

If you’ve solved moderate puzzles and are ready for the next level, this one is for you!