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5
6
4
2
7
2
5
4
1
4
3
2
6
9
1
3
7
2
6
9
6
4
9
2
7
5
8
9
1
3
7
5
2
6
4
1
5
4
1
3
8
2025-06-16(Beginner) Puzzles
Solve puzzles while thinking of number positions
Narrow down candidates in each row and column.
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.