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6
8
4
1
2
5
7
6
6
1
5
2
7
9
2
1
6
8
4
2
7
4
8
5
2
3
9
7
2
1
5
6
9
8
4
1
7
2
7
3
6
2024-04-24(Beginner) Puzzles
Puzzles to complete without hesitation
Check the rules each time you place a number.
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.