00:00
2
6
8
7
1
2
4
5
9
4
7
2
2
1
7
3
6
2
8
1
5
1
8
7
3
7
6
3
2
9
7
2025-04-11(Intermediate) Puzzles
Excellent brain exercise
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.