00:00
7
2
6
4
8
5
2
7
5
2
7
4
8
1
3
8
7
2
1
4
8
1
8
3
2
7
3
6
5
7
9
2024-11-12(Intermediate) Puzzles
Puzzles requiring strategic thinking
Take your time if stuck and review candidates.
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.