00:00
6
4
8
9
3
8
1
4
8
7
9
5
6
4
5
9
3
2
8
1
7
3
8
3
2
8
4
8
6
7
2
2025-01-31(Intermediate) Puzzles
Enjoy reasoning while solving
Correct mistakes immediately if found.
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.