00:00
2
4
1
4
4
7
6
5
1
1
7
2
8
5
3
9
2
9
4
8
9
6
4
1
2
5
2
1
3
4
6
2025-07-07(Intermediate) Puzzles
Thoughtful Number Place for careful solving
Use notes to reduce hesitation.
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.