Tough Sudoku

Not tough today.
Just for kicks, I blogged this one anyway. A good puzzle for coloring.

The main thing missing from this photo of mine is my grandchildren.

11:22 Maen. Another summer picture... I'm ready for that.

Easy puzzle today.
Nice beach.

28 minutes. Pretty easy for 'Tough'. No time to
write doen the solution, as the coffee break is
over. Back to work.

15.49

Another beach I wouldn't mind being on.

13:08 Hi to all and have a good weekend. Any beach is looking good right now..sigh

Good morning to all! Just follow those footprints Anne and you'll find your grand children!

Well done, Steve! My solution also depended on 2s, so it relied on the same line of reasoning (but expressed using less refined terminology).
Picking up Justin's notation. After the UPs 2a3, 4d3, 6f3 and 3d5 I spotted the hidden pair
28=i7/h9. Also a locked 3 in bc9 forces e8=3. After fumbling around and looking for clues I decided to (for some unknown reason) check whether
we could have e5=1 (if not, then we would get a locked 1 in e12, dunno if that would help, but I WAS fumbling around). Then I noticed that this would force 2e9 which together with the hidden 28 pair in the top right box forces so many twos that row 5 cannot have a 2 at all! Then it dawned on me that 2e9 alone leads to the same contradiction without any assumptions about the whereabouts of 1 on column e. As Steve pointed out, the whole puzzle then becomes solved in a cascade of UPs.

Wish I could speed up the process of locating this
kind of chains of logic (without possibility markers that is). This technique is definitely a tad more difficult than what it takes to unravel the Hard puzzles. In a way this is exactly the level of sudoku I enjoy most. Not just scanning for UPs, locked candidates and blind/hidden groups, but still something I can do if just barely.

Cheers,

Jyrki

Another ridiculously easy puzzle. Didn't even get to '9' in the search for locked candidates before the puzzle was complete. guess it's back to the archives. Nice weekend everyone

Nice beach, where are the grand children?

finished..but took some time..didnt work on it at a stretch..too many distractions..
Anne wheres the G'children and how can you be so careless!!??

That is a very good photo Anne, congratulations.

How I wish my feet could make prints in that sand right now!

12:15
It would be nice to be on this beasch...

beautiful beach but ridiculously easy puzzle - 3:10 after setup. Have a good weekend everyone!

15:20 - gee, I hope they weren't my footprints leaving such heavy dents in the sand!!! It must have been all the rich Christmas food I ate.

Hi Jyrki!
Thanks so much for both your proof, and your commendation.

Its wonderful when there are so few people around you know all your own footprints in the sand

Nice picture 'Anne'but I can't recognize your Grandchildren Footprints.

13:35

For some reason, I took more time than what the others did.

Jan. 3, 2008.

SE=6.6

14:19.