00:00
2
9
8
5
7
3
2
5
6
1
2
9
9
2
1
5
6
8
7
3
2
9
5
9
3
4
5
2
7
4
9
2025-07-06(Intermediate) Puzzles
Puzzles to challenge logical thinking
Read complex patterns and advance logically.
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.