Calcudoku puzzle forumhttps://www.calcudoku.org/forum/ is this one difficult?https://www.calcudoku.org/forum/viewtopic.php?f=19&t=289 Page 1 of 2

 Author: pnm  [ Fri Aug 03, 2012 11:27 pm ] Post subject: is this one difficult? I'm testing the Killer Sudoku rating. The puzzle below is supposed to be (very) difficult. Is it?(puzzle removed, please see the new one 3 posts lower)

 Author: arjen  [ Sat Aug 04, 2012 12:15 pm ] Post subject: Re: is this one difficult? Maybe difficult but not very difficult.

 Author: pnm  [ Sat Aug 04, 2012 12:28 pm ] Post subject: Re: is this one difficult? arjen wrote:Maybe difficult but not very difficult.Thanks :)I tried it myself as well, made a mistake somewhere ,but do agree it's not very difficult.

 Author: pnm  [ Sat Aug 04, 2012 1:37 pm ] Post subject: Re: is this one difficult? This one is supposed to be more difficult than the first one:Is it?

 Author: clm  [ Sat Aug 04, 2012 2:50 pm ] Post subject: Re: is this one difficult? pnm wrote:I'm testing the Killer Sudoku rating. The puzzle below is supposed to be (very) difficult. Is it?(puzzle removed, please see the new one 3 posts lower) I did the first (already removed), I think in fact it's easier than the typical everyday "medium".

 Author: clm  [ Sat Aug 04, 2012 8:40 pm ] Post subject: Re: is this one difficult? pnm wrote:This one is supposed to be more difficult than the first one: ...Is it? Yes, it's more difficult and more interesting, doable, it takes some more time in the analysis, having increased the size of the cages (six 5-cell cages, two every three columns). The key for the solution is given, in my opinion, by the cage 20 (5-cell) located in d2.

 Author: beaker  [ Sat Aug 04, 2012 11:12 pm ] Post subject: Re: is this one difficult? pnm wrote:I'm testing the Killer Sudoku rating. The puzzle below is supposed to be (very) difficult. Is it?(puzzle removed, please see the new one 3 posts lower)The original one was very difficult for me as i tried a number of different combinations and continually got stopped about 1/2 way through the puzzle.......once you put in cages of 3 cells or more and multiples of these cages, I AM DONE.......I will probably not be able to do any with the 3 or more celled cages.....and here I thought my IQ was going to increase with the calcudoku (after all isn't that what the site tells us )

 Author: pharosian  [ Sat Aug 04, 2012 11:42 pm ] Post subject: Re: is this one difficult? It looked like I was going to get it fairly quickly, based on how many cells I was able to determine in columns g, h, and i. The lower left 3x3 seemed fairly straightforward as well. But then I struggled with the rest of it--even after determining the value of cell e5 in the 20+ cage clm mentioned.In the end, I got all the rows, columns, and 3x3 grids to add up to 45, but the 31+ cage starting at a1 only contained 29 (-2), and the 28+ cage starting at d2 contained 30 (+2). Can't figure out how to resolve that. So yeah. Pretty hard.

 Author: pnm  [ Sun Aug 05, 2012 12:04 am ] Post subject: Re: is this one difficult? Great, thanks to all so far, this gives me a good ideafor various parameter settings for the generating algorithm

 Author: clm  [ Sun Aug 05, 2012 8:46 am ] Post subject: Re: is this one difficult? pnm wrote:Great, thanks to all so far, this gives me a good ideafor various parameter settings for the generating algorithm Now that you have the software adjusted (and even with colours! ) it's time for you to think in also publishing a new book with only "Killer's" (other people "outside" this wonderful Calcudoku world could be very interested). I give an initial idea: 50 easy, 50 medium and 101 difficult, with the same punctuation, 3, 5 and 7 for the solutions sent to this site.

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