Steps 28-30
| Step 28 | ||
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Single Possibility The purple highlighted square is only missing the number 7 and only has one empty tile. That tile must be a 7. |
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| Step 29 | ||
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Elimination, then Single Possibility The purple highlighted square is missing the numbers 1 and 9. The red highlighted 9 eliminates one the tiles from being a 9. The other one must be a 9, so the remaining tile must be a 1. |
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| Step 30 | ||
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Elimination, then Single Possibility The highlighted column is missing the numbers 2 and 8 and has two empty tiles. The red highlighted 2 eliminates one of the tiles, the other one must be a 2. That leaves a single tile to be the 8. |
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