00:00
2
3
9
5
2
3
1
6
5
5
3
7
4
8
1
6
6
1
8
4
9
2
6
2
2025-11-13(Advanced) Puzzles
Thoughtful puzzles requiring strategy
Complex patterns can be solved step by step using logic.
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.