00:00
5
7
2
9
8
8
3
7
2
9
8
6
6
8
3
4
7
5
3
1
4
8
3
5
4
8
4
2
5
9
3
2024-11-01(Intermediate) Puzzles
Thoughtful Number Place for careful solving
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.