Steps 16-18
| Step 16 | ||
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Simple Elimination There are three empty tiles in the highlighted 3x3 square. The missing numbers are 2, 8 and 9. The highlighted 9 eliminates two of them from the empty tiles in the square, so the remaining empty tile must be a 9. |
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| Step 17 | ||
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Simple Elimination There are three empty tiles in the highlighted column. The missing numbers are 4, 8 and 9. The highlighted 9's eliminate two of them, so the remaining empty tile must be a 9. |
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| Step 18 | ||
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Simple Elimination There are three empty tiles in the highlighted row. The missing numbers are 1, 6 and 8. The highlighted 8's eliminate two of the empty tiles, so the remaining empty tile must be an 8. |
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