00:00
2
8
5
9
1
9
4
2
1
9
4
2
7
7
8
5
8
2
4
6
5
3
2025-01-03(Advanced) Puzzles
Test reasoning and strategy skills
Use notes to manage candidates efficiently.
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.