00:00
8
5
4
2
9
4
1
2
3
6
8
6
1
9
6
1
7
6
5
2
8
9
3
1
3
1
7
5
2
9
8
2024-03-23(Intermediate) Puzzles
Moderately challenging puzzles
Read number patterns to identify efficient steps.
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.