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9
4
8
7
8
9
5
6
1
6
5
8
9
1
7
5
4
2
6
3
5
3
6
8
7
1
3
6
4
9
7
2025-06-06(Intermediate) Puzzles
Thoughtful Number Place for careful solving
Read complex patterns and advance logically.
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.