Hopefully you found a series of fairly easy 2’s and 4’s from the puzzle as we left it in the previous post. You should have been able to complete them like this. Again I have tried to use darker colors to show later entries.
If you start with box 7 and see how the 2’s in the boxes above affect it, you will see where I have started.Then move to box 8 and box 2. After all that, there is only one unconstrained place in box 2 for the value 4. This gives us the 3 in that box as a freebie (not a sudoku term!) and the 4 in box 8.
Once we have these values in place, the next group of values to go in are the 5’s. See if you can do these before taking the jump.
In order they went into box 3, then box 9 and finally box 7.
We have a situation now in box 5 (in column 6) where the last three values for that column all live in the same box. We already have 6 values in the column and we only need to find where 1,7 and 8 go. Looking at cell 4,6 you should be able to see that 7 and 8 are not allowed because they already exist in that row. So we are left with a naked single of 1.
In the same way (only a little harder) we still need to find locations for 1,3,6 and 9 in the last box. Look at cell 8,7. In that cell, 6 and 9 are forbidden because they are already in the column and 3 is already across in the next box to the left. Again, all that remains is the value 1. Filling in that 1 and looking closely we can also see that I should have found a 3 in cell 7,8 as it is constrained by the 3’s over to the left. That gives us the following grid to work on in the next post.
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sudoku is a good in people,,,,,,,,,,,,,,,……………………………………………………………………..