DCTP Forums

Wait, no, I screwed up.

159
672
834

you turn the board 90 degrees and it looks like sunglasses.

Akonyl wrote: you turn the board 90 degrees and it looks like sunglasses.

Conan324 wrote:

Dus wrote: 159
672
834

wrong, the diagonals  are incorrect, beside, you didnt list the logical way to solve it, a proof that you were just trying combinations

Missed the part about the diagonals>_>

294
753
618

You find out the 11 possible combinations and count how often each number appears.
5 appears four times, so it has to be in the centre. 2, 4, 6, and 8 appear 3 times each, they go in the corners. The rest's a cakewalk.

to actually solve it:

each row column whatever needs to add up to 15. It's worth noting that the puzzle is probably symmetric, so anything else would be weird. Thus, you think of the puzzle as having pairs of numbers which add up to the same amoutn, with one in the middle.

so:
1 9
2 8
3 7
4 6
and a 5. This would thus go in the middle, as the pairs add to 10 and the 5 in the middle balances these all out. So, you then put these pairs on the opposite sides of the 5.

xxx
x5x
xxx

9, being too heavy a number, should be put on a side rather than a corner to keep from influencing the others too much.

x9x
x5x
x1x

so, the top row needs 6 more. We have 28, 37, 46 left. We obviously need to choose from the 2,3 and 4 to go with it. Of these 3 numbers, you can only get 6 with the 2 and 4.

294
x5x
618

leaving you with 3 and 7, which are obviously placeable.

294
753
618

*punches Akonyl*

8) <3