00:00
5
2
6
6
9
2
5
3
9
7
6
1
5
7
1
3
5
4
2
8
7
2
1
3
5
8
5
1
9
7
8
2024-09-26(Intermediate) Puzzles
Combine logic to solve efficiently
Advance gradually toward completion.
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.