Stuck on where to begin? Follow this step-by-step visual guide to unravel Sudoku grids methodically and watch numbers click into place.
Sudoku may look like a random grid of numbers at first glance, but there is a systematic 4-step sequence to solving every puzzle smoothly. Instead of jumping randomly from corner to corner, following this structured routine lets numbers fall into place like dominoes.
When a new board appears, scan for digits that already appear 5 to 7 times across the grid. Using Cross-Hatching on these high-frequency digits immediately yields your first 3 to 5 placements.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9! |
↑ Whenever a row, column, or 3×3 box has 7 or 8 digits filled, solve the remaining cells immediately.
Whenever a digit is narrowed down to exactly two cells inside a 3×3 box, mark them with small candidate notes. This exposes Locked Candidates and Naked Pairs effortlessly.
Every time you place a new digit, immediately re-scan the intersecting row, column, and 3×3 box of that newly placed digit. One placement almost always unlocks the next!
