00:00
7
9
1
2
6
2
4
3
9
4
6
7
1
9
3
8
4
7
2
9
3
8
5
2025-05-03(Advanced) Puzzles
Test strategic thinking skills
Use notes to manage candidates efficiently.
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.