00:00
2
9
4
7
1
1
2
4
4
3
1
6
8
6
4
3
5
1
5
8
6
9
3
5
3
5
7
1
4
9
5
2025-07-23(Intermediate) Puzzles
Logical puzzles for steady progress
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.