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7
4
1
2
5
4
8
7
9
5
1
3
2
4
7
9
8
7
3
6
7
6
5
2
1
5
2
9
3
7
9
6
5
1
3
7
6
5
1
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4
2024-05-20(Beginner) Puzzles
Complete puzzles with ease
Use pencil marks to track possible 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.