00:00
2
3
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8
3
4
1
5
8
7
9
3
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9
1
1
5
8
2
9
7
1
6
3
8
5
7
3
8
1
3
9
6
8
1
6
1
2
5
7
2025-04-23(Beginner) Puzzles
Check basic rules while solving
Check each candidate and leave uncertain squares for later.
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.