00:00
8
4
7
6
7
9
8
5
7
2
2
6
5
4
1
1
6
2
3
1
9
5
2
4
2024-04-21(Advanced) Puzzles
Puzzles for seasoned players
Compare possibilities and choose efficiently.
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.