00:00
1
6
7
8
4
1
9
5
2
5
6
3
8
4
2
1
3
9
7
1
2
2
4
5
2024-07-18(Advanced) Puzzles
Satisfying puzzles for experienced solvers
Consider multiple candidates simultaneously to find optimal placement.
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.