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5
2
8
6
4
2
4
7
9
1
9
5
7
8
9
4
1
3
6
7
4
8
4
9
5
8
3
7
5
9
8
2025-06-22(Intermediate) Puzzles
Logical puzzles for steady progress
Review candidates if stuck and reorganize.
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.