DC Sudoku Strategy - Example #1, Beginner, Steps 7-9

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Steps 7-9

Step 7
puzzle strategy for step 7

Simple Elimination

There are two empty tiles in the highlighted 3x3 square. The missing numbers are 2 and 5. The crossing column eliminates one of them from being 5, so 5 is assigned to the only remaining tile.

result for step 9
Step 8
puzzle strategy for step 8

Single Possibility

There is only one empty tile in the highlighted 3x3 square. The missing number is 2, so that is assigned to the empty tile.

result for step 9
Step 9
puzzle strategy for step 9

Simple Elimination

There are three empty tiles in the highlighted 3x3 square. The missing numbers are 2, 3 and 7. The highlighted 3 eliminates two of them from the empty tiles in the square, so the remaining empty tile must be a 3.

result for step 9

Main Strategy Page | Steps 4-6 | Steps 10-12


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