00:00
2
6
9
5
7
3
2
1
1
8
3
2
6
9
6
4
8
3
7
8
6
5
1
6
8
7
4
3
2
9
1
2024-11-11(Intermediate) Puzzles
Slightly challenging but fun puzzles
Compare multiple candidates and place definite numbers first.
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.