00:00
6
8
4
8
3
6
2
2
9
9
3
1
6
8
6
2
3
4
1
7
8
3
1
8
2
5
8
7
3
5
4
2025-11-13(Intermediate) Puzzles
Solve step by step with reasoning
Read number patterns to identify efficient steps.
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.