00:00
4
9
5
3
2
4
1
9
1
4
9
7
1
5
6
4
6
9
2
8
3
9
7
4
5
8
1
7
4
8
9
2024-01-06(Intermediate) Puzzles
Slightly challenging but fun puzzles
Confirm each number gradually to understand the structure.
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.