| Step 17 | |
This step is a bit more complicated. The logic to solve this step would demonstrate to you why the sudoku game has become so popular and why so many people play sudoku on a daily basis. Let’s first look at the middle box (where DEF cross MNO). We can’t put 3s in row E because there’s a 3 in cell EQ, so we know that there must be a 3 in either cell DN or FN in column N. Now, let’s look at the top middle box (where ABC cross MNO). We can’t put a 3 in column N because we know there’s already a 3 in this column following our previous logic. |