00:00
6
8
9
3
5
3
1
7
9
2
5
3
8
1
2
1
7
4
2
9
3
6
4
7
1
2
5
5
7
9
3
2024-12-01(Intermediate) Puzzles
Puzzles to challenge logical thinking
Confirm each number gradually to understand the structure.
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.