Sudoku Puzzles

What sunset? Kate must have had a loooong drink-ie-poo between the time she saw the sunset and the time she snapped the photo!

Unless "sunset" is the name of the highway...

ok, managed to finish it, after some hiccups....
but see no sunset..

Pretty reflection! It must be nice to see in person! Thank you!

11:01 I was a bit slow today. Anyway, pretty picture, sunset or no sunset. =]

9:15 Hi to all.

The has set

Oops, maybe I've had a drink-ie-poo too.
Should read;
The sun has set

Cannot be a drink-ie-poo - the picture's too sharp - underexposure is much more likely.

54:18

1. Starting at 22, basic techniques to UP=27.
2. d1=4 or 6. If d1 =6, a lot of things happen very fast in multiple branches. Every chain leads to a conflict but it is difficult to get a short chain because so many numbers get forced. Here is the shortest one I could come up with that leads More...

Acknowledgement: Before I commence writing the proof, I would like to acknowledge the valuable help given by Alfred of Sydney who spent valuable hours of his time to check the proof and correct several typos etc. Thank you very much, Alfred, for your guidance.

Proof:
1.Given UP=22. UP More...

Cool, Rugram! Glad to see this puzzle getting some respect!

I have a correction or two waiting (to hear from Alfred, also) on mine.

Regards,
Brenda

There is an improvement and a correction (I think)to my solution above --

At the end of step 4, Alfred informs me, when b7=4, it immediately results that i2=4, so UPs go to 39 there. (Duh. :-})

In step 7, after h8=6, c9=6. I left it out in shortening the chain, but it's needed for More...