12:43 am
moedog
too many distractions - done
8:56 am
Andy
Today's puzzle isn't a valid puzzle. There's a unique rectangle that is pure 2/6 in all four cells. First time I've ever seen that happen here. http://www.learn-sudoku.com/unique-rectangle.\nhtml
9:08 am
spellacked
That's funny, I didn't run into the UR. Are you sure it isn't reduced by another cell?
9:37 am
Andy
I'm looking at the final puzzle and it's right there. I don't want to spoil the puzzle for anyone by saying where they are though.
9:45 am
spellacked
I don't see any unique rectangle where I can swap the 2s and 6s and not affect the 2s and 6s also in those bigger squares. There are at least three places where there is a square of 2 and 6, but none of them let you swap their places.
9:47 am
Andy
How odd... how is it we have differing solutions?
OK, SPOILER ALERT!! Read no further! The UR is in (upper left corner is 1,1) 5,5 5,8 7,5 and 7,8
9:48 am
Andy
OH, Ok. I get what you're saying.
9:48 am
Andy
And I see what my logical fallacy is. OK. Move along. Nothing to see here :)
5:46 pm
doseffing
Did you really get a second solution Andy? ... I have the lower left corner forcing the lower right corner and thus forcing that rectangle into a single solution.
