Sudoku Puzzles

Once upon a time, a long, long time ago, I occasionally wrote a blog at this site. I have restarted the blog today.
One can find an illustrated solution to today's puzzle in that blog. A link to that blog exists in the upper right hand corner of the right hand column, under "check out the More...

Looks like there are sun worshipers around the world!
Nice photo, Kate!

Hi, Steve! back! We Old Timers from "long, long ago" have missed you!

Nice photo Kate. Have a nice week-end all of us!!

Our sun is hiding under clouds today. I am afraid more rain is on the way.

Thank you, Steve!

16:57 one possibility

My one possibility was in d3, so that jives with Steve's proof. Thanks, Steve, for the logic and illustrated steps to the solution.

Almost an hour and one half to solve.

very tough - too long to bother timing

Hi Steve.Here is another way of showing d3<>3,using a "super" AUR:
If d3=3,e2=5,e3=9,e1=1,e8=6.Now g56=67,g1=3,f4=6,a56=36 and f56=37.This "super" unique rectangle at afg56 cannot be resolved.

Hi again Steve.When I checked your solution more thoroughly,I found my method was equivalent to yours,just using different terminology.Sorry about the mix up.Regards, Alfred.

Hi Steve

Welcome back.

You chose a good puzzle to re-start your blog - I didn't have a clue on how to do it by logic, but one good guess solved it - and very many not-so-good ones didn't.

Yours bigginerly (if there is such a word)

Neil
~

Hi Alfred!
I have noted that you publish quite a few solutions here. Thank-you for doing so!
Occasionally, what appears to be different will be exactly the same, or very similar. No need to apologize, albeit it is very nice, especially for other readers, to note the overlap between our approaches. Thank-you!

Thanks to everyone for the kind words. They are appreciated!

For this one,I just found these eliminations;

e1=9,f7=3,f2=2,g56=3,hi2=5,c9=7,b2=2,b4=3,f4=1