00:00
6
5
8
5
1
7
4
1
9
5
7
2
8
7
9
8
8
5
4
1
5
2
3
1
3
9
6
3
5
2
8
2025-02-07(Intermediate) Puzzles
Solve step by step with reasoning
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.