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8
1
7
9
7
9
4
5
3
1
2
3
9
8
9
5
6
1
8
9
3
4
7
5
3
9
9
5
6
2
7
2025-11-11(Intermediate) Puzzles
Strategically plan number placement
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.