Sudoku Puzzles

Wow! That is impressive. I think I would have clostrophobia down there!

me too

Great to finally have new pictures - have a good day/evening all

A path to solve this one
Start at 23.
1- Basic technique UP44 (note : pairs 16 at a47, 75 at box3 & i67, 47 at df5, 83 at h89 ...)
2- d7=1==a7=1 - a7=6==a4=6 - h4=6==h4=7 - i6=7==i7=7 => d7<>7
3- XY-wing 156 at (a7,b8,d8) => d8<>5, UP81
Note : after UP44 have a lot way to finish this by one chain depth 5.

New picture!

Not new, but haven't seen this one for a while! It's a great photo.

nice pict. where is it? what is it?

I wonder if I messed the possibilities? I found unique possibilities to end. I might try again after lunch.

This is an open limestone cave at the entrance to Jenolan Caves in Blue Mountains west of Sydney. Because it is open and you can see fully through it to both ends as well as some More...

How did the 'b' in 'claustrophobic' migrate so far to the left? Must still be tired. I am not sure if I have a virus or something bit me but I was exhausted yesterday. I went to bed at 8 and slept for 13 hours (broken by torrential rain just after 5am). I feel a bit better but that was most odd.

http://www.jenolancaves.org.au/

This IS the hole in the roof!
http://www.jenolancaves.org.au/index.asp?pageID=58&menuItemID=605

The Devils Coachhouse and Nettle Cave are open free of charge. This photo was taken from the Nettle Cave looking down to the Devil's Coach house.
http://www.jenolancaves.org.au/index.asp?pageID=24&menuItemID=35

25:20 to you all. Nice photo.

Kate - Thanks for the info! This sounds like an interesting place to visit. The terrain looks different from the other Australia pictures we have seen.

10.56 you must be up very high taking that photo Kate. nice one to look at

Its taken from the Nettle Cave which is now open to the public. I remember it as a locked door from my childhood holidays in the mountains but now you can walk through.

Maybe I did fluff the possibilities - most luckily - the first time.

Like Kate, I found unique possibilities popped up all over the place once I began solving. It required just clerical work, no techniques, to fill in the solution.

22:08. Great shot Kate. I didn't get the unique possibilities right through to the end - must have mucked up my possibilities.

That is an eerie looking place, Kate.
Jenolan Caves?
Yep! Thanks for all the info Kate.
Take care, hope you're feeling better soon.

This pic made my stomach turn just looking at it, can't stand [or sit at, LOL] heights.

13:58