00:00
6
4
2
3
1
4
5
6
2
1
3
9
2
4
1
5
6
2
8
7
5
2
7
4
2025-04-11(Advanced) Puzzles
Strategic thinking for complex placements
Compare candidate possibilities to advance optimally.
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.