00:00
6
9
5
3
4
9
7
5
8
3
4
1
9
8
7
4
5
1
9
7
4
8
1
8
7
3
9
6
1
8
7
2024-07-31(Intermediate) Puzzles
Thoughtful Number Place for careful solving
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.