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 Difficult Killer Sudoku for 16 Sept 2012 
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Posted on: Fri Sep 21, 2012 1:14 am




Posts: 694
Joined: Fri May 13, 2011 6:51 pm
Post Re: Difficult Killer Sudoku for 16 Sept 2012
bram wrote:
pharosian wrote:
Wow, that was incredibly helpful! Thanks!

I'd already got the 8 and 9 in the 23 cage and knew the other three corners had a sum of 10, but after that I was stuck, even knowing a fair bit about the left 3 columns of the puzzle. With what I already had, your clue gave me the "leg up" I needed to get the rest of the way. [thumbsup]

You're very welcome. I'm a great fan of clm's impressive contributions to the solving strategies and tips section and tried to do something similar to this recent clue for a harder-than-difficult killer sudoku at another site. Nice to know it was useful.


Thank you, bram, for your comments (you are undoubtedly among those who enjoy the magic of numbers), anyway I think there is still a lot of work to be done (for instance, we need a full table as a guide for the -3 to 3 7x7 Calcudokus, my purpose is to give some more useful examples of "the use of maximums and minimums in the sum of cages", the segmentation, etc.). Also we must propose new operators and/or formulas for the Calcudokus, in the Section "Specific puzzles/your own puzzles".

In response to the initial request of this thread by pharosian, and with the idea of giving a small contribution to the recent discussions (and also to "underline" some specific "tips" or "tricks" for the Killer's), I am sending a separate post to the section "Solving strategies ant tips" with the full step by step solution for the Sep 16, 2012 Killer. The post is not complete (I hope to finish it in one or two days).


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Posted on: Fri Sep 21, 2012 11:58 am




Posts: 19
Joined: Fri May 13, 2011 10:46 am
Post Re: Difficult Killer Sudoku for 16 Sept 2012
pnm wrote:

So now I know which of the upcoming difficult puzzles will be harder than usual:
- Sunday Sep 23
- Tuesday Sep 25
.........

Man, I already consider tuesday the most dificult day of the calcudoku week, maybe you could ease up at least on the "killers". Pretty pleeeease.


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Posted on: Fri Sep 21, 2012 12:33 pm




Posts: 2215
Joined: Thu May 12, 2011 11:58 pm
Post Re: Difficult Killer Sudoku for 16 Sept 2012
danvijan wrote:
Man, I already consider tuesday the most dificult day of the calcudoku week, maybe you could ease up at least on the "killers". Pretty pleeeease.

Those puzzles are harder more because of the limited rating accuracy
of an earlier version of the solver.

I suppose I could replace them before they appear..


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Posted on: Fri Sep 21, 2012 3:14 pm




Posts: 116
Joined: Sat May 14, 2011 3:18 am
Post Re: Difficult Killer Sudoku for 16 Sept 2012
pnm wrote:
I suppose I could replace them before they appear..

Yes, please! I second danvijan's request! [tongue]


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Posted on: Fri Sep 21, 2012 11:17 pm




Posts: 498
Location: Ladysmith, BC, Canada
Joined: Fri May 13, 2011 1:37 am
Post Re: Difficult Killer Sudoku for 16 Sept 2012
Yes, Tuesdays are my nemesis.


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Posted on: Sat Sep 22, 2012 1:38 pm




Posts: 2215
Joined: Thu May 12, 2011 11:58 pm
Post Re: Difficult Killer Sudoku for 16 Sept 2012
pharosian wrote:
pnm wrote:
I suppose I could replace them before they appear..

Yes, please! I second danvijan's request! [tongue]

Ok, I replaced Sunday's and Tuesday's difficult Killer Sudokus..
(Sep 23 and 25).


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Posted on: Sat Sep 22, 2012 5:20 pm




Posts: 116
Joined: Sat May 14, 2011 3:18 am
Post Re: Difficult Killer Sudoku for 16 Sept 2012
Yay! Thanks! [thumbsup]


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Posted on: Sat Sep 22, 2012 8:28 pm




Posts: 43
Location: Tacoma, WA, USA
Joined: Fri May 13, 2011 4:03 am
Post Re: Difficult Killer Sudoku for 16 Sept 2012
Boo. I say keep the difficult ones.


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Posted on: Sat Sep 22, 2012 8:44 pm




Posts: 2215
Joined: Thu May 12, 2011 11:58 pm
Post Re: Difficult Killer Sudoku for 16 Sept 2012
rossiniman wrote:
Boo. I say keep the difficult ones.

Well, let me know what you think of tomorrow's difficult puzzle.

I can then later also post the "dismissed" puzzles, for comparison.


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Posted on: Sat Sep 22, 2012 10:15 pm




Posts: 98
Joined: Fri May 13, 2011 12:48 am
Post Re: Difficult Killer Sudoku for 16 Sept 2012
About two weeks ago I started to have a hard time with the difficult killer sudokus, but then I noticed that there was a new rule in place! Even though it had been mentioned in the forums that it had changed, I hadn't connected it until I read the rules of the killer sudokus. That a cell can't repeat numbers! Btw Patrick, the Check now function doesn't work for this.


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