00:00
3
8
6
2
1
9
6
7
4
5
7
9
1
6
7
9
4
1
5
9
1
3
8
2025-04-28(Advanced) Puzzles
Puzzles for seasoned players
Read complex placements and decide strategically.
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.