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6
3
5
6
3
1
9
7
5
6
1
4
8
4
7
2
6
3
1
6
9
9
5
8
3
1
5
9
8
9
4
2024-05-25(Intermediate) Puzzles
Combine logic to solve efficiently
Solve less confusing parts first and follow order.
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.