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Difficult Killer Sudoku for 16 Sept 2012
http://www.calcudoku.org/forum/viewtopic.php?f=19&t=326
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Author:  clm  [ Fri Sep 21, 2012 1:14 am ]
Post subject:  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).

Author:  danvijan  [ Fri Sep 21, 2012 11:58 am ]
Post subject:  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.

Author:  pnm  [ Fri Sep 21, 2012 12:33 pm ]
Post subject:  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..

Author:  pharosian  [ Fri Sep 21, 2012 3:14 pm ]
Post subject:  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]

Author:  beaker  [ Fri Sep 21, 2012 11:17 pm ]
Post subject:  Re: Difficult Killer Sudoku for 16 Sept 2012

Yes, Tuesdays are my nemesis.

Author:  pnm  [ Sat Sep 22, 2012 1:38 pm ]
Post subject:  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).

Author:  pharosian  [ Sat Sep 22, 2012 5:20 pm ]
Post subject:  Re: Difficult Killer Sudoku for 16 Sept 2012

Yay! Thanks! [thumbsup]

Author:  rossiniman  [ Sat Sep 22, 2012 8:28 pm ]
Post subject:  Re: Difficult Killer Sudoku for 16 Sept 2012

Boo. I say keep the difficult ones.

Author:  pnm  [ Sat Sep 22, 2012 8:44 pm ]
Post subject:  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.

Author:  picklepep  [ Sat Sep 22, 2012 10:15 pm ]
Post subject:  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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