00:00
6
4
9
2
5
3
5
2
3
8
3
4
7
2
6
7
4
9
7
9
2
3
1
1
8
4
5
6
6
1
9
2025-08-26(Intermediate) Puzzles
Standard difficulty puzzles
Look at the whole board to decide where to proceed.
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.