00:00
9
1
4
3
9
2
1
6
8
3
6
1
8
1
8
7
5
3
3
6
5
5
9
1
1
8
5
9
7
9
3
2024-07-19(Intermediate) Puzzles
Standard difficulty puzzles
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.