00:00
5
4
9
7
1
2
3
3
2
8
9
8
2
3
9
1
6
7
1
6
8
4
7
3
2025-06-07(Advanced) Puzzles
Test reasoning and strategy skills
Organize candidates step by step to complete the puzzle.
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.