00:00
5
9
2
8
7
5
3
2
8
7
5
9
6
9
3
4
9
6
2
1
6
9
3
7
4
4
2
7
1
9
2
2024-05-06(Intermediate) Puzzles
Consider multiple candidates 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.