00:00
8
9
5
8
6
8
7
2
1
6
9
2
5
8
5
3
1
1
2
7
5
7
3
5
1
6
1
6
8
9
2
2025-08-08(Intermediate) Puzzles
Tackle slightly complex patterns
Compare multiple candidates and place definite numbers first.
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.