00:00
2
5
1
2
5
8
5
9
7
9
8
1
3
7
2
5
7
9
4
3
6
1
8
6
4
8
6
7
3
6
9
2024-08-30(Intermediate) Puzzles
Puzzles to challenge logical thinking
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.