00:00
5
4
6
1
9
1
2
4
5
9
4
7
8
9
5
2
7
7
2
3
4
9
9
8
4
2
9
7
8
1
6
2025-05-06(Intermediate) Puzzles
Thoughtful Number Place for careful solving
Arrange numbers effectively to progress.
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.