Sudoku Puzzles

Very colourful, another great photo, Keyan.

Happy Easter to those, who like me, are celebrating Easter at this time!

Good morning to all! I know these stands are all over Delhi Keyan, but looks very much one that is just down the road from the Imperial Hotel. Thanks for sharing!

Maen all
what wonderful colour

Keyan, you take amazing photos. Thanks for sharing.

Took me almost an hour and a half.

Well over an hour. No proof, the fcs were effectively guesses leading to a contradiction after a dozen moves or so.

Nice colors. A succesful rest area enterprise?

1) Start 23, Unique Possibilities to (UP) 26.
2) Hidden pair 26 at d3, f1 forbids d3=35, f1=57.
3) c4=7 == e4=7 -- f6=7 == f2=7 forbids c2=7.
4) Locked 7s at ef2 forbid e1=7. UP 31.
5) Locked 9s at de9 forbid hi9=9.
6) Locked 9s at gi5 forbid ghi4=9, gh6=9.
7) g6=4 == h6=4 -- More...

Alternative proof:
1) Start at 23 filled - the given puzzle. Unique Possibilities to 26 filled. (UP 26)
2) fc on 7s: e4 == c4 -- c2 == ef2 forbids e1=7 UP 31
3a) Locked 9s at gi5 forbids gh6,ghi4=9
3b) b1=4 == b1=2 -- b4=2 == g4=2 -- g4=8 == i4=8 -- i4=6 == i3=6 -- i3=7 == i1=7 forbids i1=4 UP 81
Sets: 2+1+5=8
Rating: .35
Max depth 5

Basically, Clark's step 11 and my step 3b use some of the same strong links, and focus on the same inherent relationships to unlock this one.

Tough n interesting puzzle. 15.45.

29:31 with one guess

10.40 Meercat

Jan. 4, 2008.