00:00
8
5
3
1
3
5
9
4
1
8
9
9
7
4
5
2
6
5
1
5
8
1
2
4
6
9
5
3
7
5
9
2025-07-03(Intermediate) Puzzles
Think carefully for the best moves
Proceed logically without rushing.
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.