00:00
2
7
1
2
3
6
1
5
4
5
4
7
7
6
3
5
1
4
4
2
9
5
3
1
6
5
7
9
7
8
4
2025-01-07(Intermediate) Puzzles
Solve step by step with reasoning
Read complex patterns and advance logically.
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.