Start Pause Reset
33 Comments Previous / NextHelp

Tough Sudoku for 12/April/2007


Choose a number, and place it in the grid above.

  1 2 3 4 5 6 7 8 9
Check out the latest post in the Sudoku Forum

Sudoku Solving Techniques

Submitted by: sudoku lover

Indicate which comments you would like to be able to see

Who is the cute little gumnut?
12/Apr/07 12:25 AM
What is a gumnut?
Is it just me or were the hard and tough puzzles not so hard-tough today?
12/Apr/07 12:36 AM
21:39 Maen. A leisurely tough today... and I agree with Cyndi... what's a 'gumnut'?
12/Apr/07 12:39 AM
Cute picture, but I'm baffled by the caption. Nice day here, weather-wise--overcast, but dry. Not a fan of rain ...
Have a wonderful day/night, everyone.
12/Apr/07 12:55 AM
finished early today good evening every one
12/Apr/07 1:17 AM
Cyndi, Dan, and Cathy: Snugglepot and Cuddlepie are gumnuts. It's an Aussie thing. I'll let one of them explain.
12/Apr/07 1:46 AM
50 Minutes
12/Apr/07 3:00 AM
OK, I guess everyone Down Under has gone to bed, so I'll try to explain gumnuts. 'Snugglepot and Cuddlepie', if memory serves me, is a childrens book written by an author whose name escapes me for the moment. The characters 'S' and 'C' are modeled after the gumnut which is the fruit of the eucalyptus tree. I bet Anne can explain in more detail when she arises in a few hours.
12/Apr/07 3:09 AM
12:24; let me venture a guess - gumnuts are animated characters and this one is an especially sweet combo of snugglepot and cuddlepie?!?!?
12/Apr/07 3:22 AM
I would be greatly in the debt of anyone whom found today's tough relatively easy if they could reveal how they came to solve it.
For me, it is definately a monster!
BTW, after a struggle with it, to check if the mostrous label was deserved, I did submit it also to Andrew Stuart's solver, and More...
12/Apr/07 4:02 AM
mAen all
12/Apr/07 5:20 AM
Reached an impasse at 38 filled. This is a candidate for conditional type chains. Any hints out there?
12/Apr/07 5:22 AM
Does Scanraid (AS's solver)use forbidding chains? I tried using his solver for this monster but it seem to go on for ever. Perhaps a few forbid.chs. might have shortened it?
12/Apr/07 5:43 AM
Can you smoke a gumnut? If you can I sure could use one.
12/Apr/07 6:11 AM
May Gibbs wrote stories for children featuring Australian flora. Gum nut is the hard shell of the seed of our 'gum' trees. It is a very small version of the 'hat' the boy is wearing ( they vary from about .5 to 2 cm in diameter). Her best know 'Snugglepot and Cuddlepie' was about gumnut More...
12/Apr/07 7:12 AM
Pardon me if I state the obvious and include too much detail, but here goes...
1) Start at 23 filled.
UP 7's at e7, a3, i1 UP 26
UP 8's at c7, f3 UP 28
2) Locked 1's at a79 forbids a2=1
Locked 2's at bc8 forbids fgh8 = 2
Locked 9's at e13 forbids e57=9
3) 19 pair More...
12/Apr/07 8:39 AM
Steve,I'm the worlds worst at toughs. No idea about technique, but have to say that I got this one straight out with not even one teeny weeny guess. Maybe missed a probability or something on set up? and it just fell right dunno.
12/Apr/07 8:48 AM
My daughter, Leia, as a gumnut at May Gibb's former Sydney home: Nutcote now preserved as a museum. I guess you could say she's an Australian version of Beatrix Potter in that she wrote and illustrated her books using local flora and fauna - though, in her case, more flora than fauna! I believe More...
12/Apr/07 12:11 PM
And here was I muttering about yesterday's medium photo repeat that I was still waiting for some of mine!
12/Apr/07 12:24 PM
Kate, that is a lovely photo which in the end, has served to spread the word about one small facet of our rich and varied culture. Onya.
12/Apr/07 1:02 PM
Thanks Ian! :-)

I suppose I should do something about becoming a member and getting a real smiley!
12/Apr/07 1:16 PM
The Nutcote website:
12/Apr/07 1:23 PM
Scanraid solver does use forbidding chains. Andrew calls them, as does most of the sudoku world, Alternating Inference Chains. (AIC). However, the flexibility of AIC the way that his solver uses them is limited a tad. Primarily for this reason, I choose the term forbidding chains, to differentiate More...
12/Apr/07 1:29 PM
Kate - go for it!
12/Apr/07 1:48 PM
6.44 mAen all
12/Apr/07 2:25 PM
Kate. Sorry I called your daughter a boy. Guess I should have put my glasses on !
12/Apr/07 5:18 PM
June, not at all. Very hard to tell in this photo with very little of her face showing. The flowery shoes are probably the only giveaway - and you would need your glasses to detect the flowers! I couldn't find a ragged blossom hat for the photo! Just a gumnut hat.
12/Apr/07 9:09 PM
I have blogged this one. For me, the blogging was more difficult than the puzzle - by a large margin.
12/Apr/07 9:51 PM
oh my!done atlast...think my post will be the last!
12/Apr/07 11:56 PM
Well Friday the 13th ,It seems to have started alright
13/Apr/07 2:33 AM
steve - agreed, the 4/12 tough really was...
13/Apr/07 7:31 AM
Jan. 4, 2008.
05/Jan/08 3:37 AM

06/Sep/10 10:56 PM
Please Log in to post a comment.

Not a member? Joining is quick and free. As a member you get heaps of benefits.

Join Now Login