00:00
6
7
1
3
8
6
4
8
3
5
2
1
8
9
4
8
1
3
2
7
9
3
6
1
9
5
3
6
7
8
1
2025-05-27(Intermediate) Puzzles
Apply logic to solve effectively
Compare candidates to narrow options 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.