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4
1
3
3
7
9
2
4
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6
7
4
3
4
9
6
5
7
1
2
9
4
4
9
5
8
7
1
7
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8
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7
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9
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9
2
1
4
2024-07-25(Beginner) Puzzles
Solve by following number order
Take it one step at a time to see the overall picture.
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.