00:00
9
2
3
2
2
4
6
1
1
6
8
1
2
9
5
3
8
1
6
8
4
2
8
3
2025-02-23(Advanced) Puzzles
Challenging and thoughtful puzzles
Evaluate multiple candidates simultaneously.
Tips for Solving Sudoku
- Start with squares with fewer numbers: Begin with rows, columns, or blocks that already have more numbers filled; fewer candidates make it easier to solve.
- Pencil marks (notes): For beginners, write possible numbers in small font in empty squares for reference.
- Review: If stuck, check for duplicate numbers or rule violations.
- Basic rule: Do not repeat the same number in the same row, column, or 3x3 block.