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5
3
1
2
6
8
7
7
3
9
8
5
3
1
6
9
4
8
5
8
5
3
2
9
9
3
6
7
6
1
8
2025-06-04(Intermediate) Puzzles
Enjoy reasoning while solving
Proper organization makes complex squares easier.
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.