00:00
2
6
4
9
5
9
7
4
3
4
2
3
5
1
2
5
1
9
7
6
5
4
6
3
9
2
4
6
2
3
7
2024-06-19(Intermediate) Puzzles
Challenge that requires careful thought
Use notes to manage complex candidates.
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.