The New Sudoku Players' Forum

[emm]

Of course. What would I do without you!

[Smythe Dakota]

.... Didn’t you end up with 79 pairs in r89c24 that needed the diagonal constraint?

Now that I look at it, I suppose so, but I had already used diagonal constraints many times in many places, so that one didn't exactly stick out like a sore thumb.

Bill Smythe