Re: No-op 6 x 6, 10 July 2016

paulv66 wrote:

Having finished all my puzzles for the day, I decided to attempt the above puzzle manually (as I am not a subscriber). I managed to solve it, but it seems to me that there are two possible solutions, which I thought was not allowed.

The two different solutions don't affect the numbers that go in each cell, but the operator in the 2 cell in the second row, which can be either minus or divide. Does this constitute a breach in the "unique solution" rule?

The solution must have a unique latin square, but there are times when the operation isn't. I think it always ends up being subtraction vs division. 2,3,6 and 2,4 are two that come to mind.

It's been argued that in light of this the operations shouldn't even be required. But it's a way to 'keep you honest', I suppose.