| Step 22 | ||
 |
The purple highlighted square is missing the numbers 5 and 9. Since its two empty tiles are both on the same row, no other blank tile on this row can be a 5 or 9. The gray highlighted column is missing the numbers 5 and 8. One of the tiles is eliminated from being 5 by two tiles indicated above and highlighted in pink below. The other tile must be the 5, leaving only one tile to be the 8. | |
 |
 |
 |