00:00
7
5
8
6
8
4
2
1
8
7
9
8
3
6
2
8
3
2
9
5
7
2
1
7
5
2
1
7
5
4
6
3
6
1
7
8
5
9
8
6
1
2025-06-25(Beginner) Puzzles
Challenging yet accessible puzzles
Look at the board as a whole to decide where to start.
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.