| Step 10 | ||
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The purple highlighted square is missing 4 tiles. Two of them are 1 and 5. The red highlghted 1 and 5 eliminate two of the tiles. Since there are two numbers which must be assigned to two tiles, there can be no other number in those tile. The tiles marked with green 1 and 5 cannot be anything else. The gray highlighted row below is missing the number 3. The pink highlighted 3's eliminate all but one of the empty tiles (the 1 or 5 tile also cannot be a 3). Only one possible tile remains for the 3. | |
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