00:00
5
1
8
2
6
6
7
5
9
8
8
2
3
5
6
7
3
5
8
2
2
6
7
3
9
9
4
7
7
5
8
9
2
6
5
6
2
1
6
7
8
2025-05-25(Beginner) Puzzles
Challenging yet accessible puzzles
Think about candidate placement before inserting numbers.
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.