There were quite a few comments from our visitors, especially on the Daily Killer Sudoku page, which makes that and other pages load slow. Therefore, I have moved some of the old comments to this new category.
If you’d like to read what other people had to say about our puzzles you may find the old comment by clicking on the “comments” link below or here.
UPDATE (some 5 years later): I reopened the comments on all pages. Feel free to add your comments there, it means a lot to me!
Hella, the puzzle published in The Express has only one solution. You must solve it as one puzzle, you can’t solve each one separately – if you split the Samurai puzzle into 5 separate puzzles, you will find multiple solutions for each sub-puzzle, BUT, there is only one solution that works for all 5 puzzles together.
So, you should work on one sub-puzzle until you can’t go any further (without guessing!), then move on to another and so forth. Once you done all 5 this way, go back to the first one and the clues from other 4 puzzles should help you solve it.
Let us know how you go this time! 🙂
Thanks for all your excellent puzzles. Your Friday puzzle – Killer Samurai – was the best one yet. I estimate that I have taken up to 6 hours to complete it.
Thanks again and keep up the good work.
George
were can i find sudoku harakiri
Anyone manage ND’s no.5. Me very stuck?!?!
Julie, the part that broke it open for me was recognizing the hidden total of 18 for R1C4, R2C4, R3C4, and R3C5. With this knowledge I realized that R1C3 could only be one number, which then in turn leads to getting R3C5. Hope this helps.
Hi Djape!
I was looking for the Samurai Killer from last Friday but I cannot find it anywhere, not in the archive either…
Could you please tell me where to find it or could you mail it?
I was wondering as well why only the last days are in the archive and not every killer. A lot of friends of mine have just discovered the killer and are anxious to solve more…
Ron
Ron, the Killer Samurai can be downloaded from the main page: http://www.djapedjape.com
The solution is also posted there.
Hi
Looking for solution to last friday’s overlapping killer samurai – where is it?
I have downloaded your software & am trying to input a killer. I have checked ‘design’ and ‘cage sums’, and have created the cages. However, I cannot input the cage values. I input ’28’ as the first cage value, and then moved to another cage. Here I input ‘7’, but then found when I went back that the first cage had also changed to seven–and if I doubleclick on ANY cage I see a 7 (or whatever number I last entered). Furthermore, only the cage in which I have clicked shows a number–all the rest still show 0.
How do I input all the correct cage totals and make them all visible at once so that I can start solving the killer? Was there some other feature that I should have checked before I started inputting?
Looking forward to getting started–
Janet I’m not quite sure what the problem is. You enter cage sums by double-clicking on any cell that belongs to that cage and a small input box shows up in which you enter the cage sum value.
If you still can’t do it, perhaps you should try all over again – define all cages and then enter the cage values.
Good luck.
Sorry; I must really be missing something. I’ve cleared the grid, redefined the cages, and attempted to input the cage values by doubleclicking. But when I go to another cage and the first input box closes, the zero remains in the cage (that is, it doesn’t turn into the number that I input). And, as I said, when I then doubleclick on another cage & input another number, if I go back to the first cage & doubleclick on it, the number in the input box is the same as the second number I input (in fact all of the cages have that number if I click on them, but they all display zeros if I don’t).
How can I turn the zeros into cage values???
Janet, you must press “enter” when you enter the cage sum. I think that’s causing you all the problems :).
Sorry, with so many things on my plate I don’t know when will I get my head around creating a proper help file.
found it, brilliant, managed to complete it too
Many thanks: that’s all I needed. Merry Christmas!
Where can ND no 5 be found please
http://www.ndorward.com/blog/
RE: www7a.biglobe.ne.jp/~sumnumberplace/79790008/
Thanks for this link, I spent some very enjoyable hours doing the first one (no multiple answers, and all my own work), but the second one has me beat at the moment, but will keep trying. DJApe is getting later posting his killers so need something to do over breakfast these frosty mornings. Looking forward to some tougher killers, please.
Thanx phyllis Merry xmas
Oh dear, todays Cool took Pat about 15 minutes.
Getting easier for the silly season, lol
The Butterfly effect…
Nice – found it quite easy though, too much repetition? (i.e. once you knew one side, you knew the other side HAD to contain the same numbers…)
ArgonO, yes this Butterfly was very easy, but I wanted to start with a simple one to introduce the concept which Udosuk suggested.
I have also created a Butterfly X puzzle which is extremely difficult – I will post it tomorrow or the day after. It contains only 24 starting clues (as opposed to 44 in this easy one).
Just wanted to thank you for all the killer sudoku puzzles you’re providing. The first thing I do every morning is print them out. I’ve been saving them up for the trip we’re taking today, so thanks in advance for making my plane ride zip by.
Addicted in Texas
Just finished Killer 13th December…
Not too bad, was able to work out all the pairings/triplets along the bottom row fairly quickly, eveything else flowed from there. (including a little trick with the 12, 20 & 10 from r6c3 to r9c4 – all to do with conjunction of a 19 (virual cage) and a 20 (real cagee)).
Thanks so much djape for adopting the idea. I knew you’d be up to the task! Look forward to your extremely difficult Butterfly X!
Hi Love the software and puzzles but is there any chance the you can publish archives of the text files so I can then import them in to the software.
Massive Fan Vince from London UK
Cannot find THINKER X (37249) in the archive.
My apologies; it’s now there.
Alasdair, no need to apologise. I couldn’t find Thinker X 37249 yesterday, but it’s now there. There must be a gremlin in the system.
can i find solution to puzzle IQ 817616 anywhere?
Carolyn, I reposted the solution in the archive. I will keep it there for another couple of days.
Wow, it’s there! An early X’mas present. ^_^
Djape, according to my record there are quite a few overlapping puzzles that were posted in the “Daily Sudoku” page but never get to the archive, including 2 “Double Trouble X” on Dec 6 & Dec 14, and the “Triple Trouble X” (your 2nd creation) on Nov 30.
Also, I suggest you to create another folder in the archive for all the overlapping puzzles, as they are seemingly all over the place at the moment, with some being killers and some “classic” ones. When I have time later I’ll try to post a list on all these and let everybody check if anyone’s missed any…
Once again thanks sincerely for providing all of us your fabulous puzzles. Best Wishes for the Christmas & New Year!
Thanks for all the 2005 killers Dj. Have a great Xmas and New Year. (Or should I be PC and say “Happy holidays”)
Mike Japan
Merry Christmas to all of you.
Ana Spain
Go for it Mike
Christmas IS Christmas, stuff PC.
Sick of hearing out here that nativity, santas etc being dumped from schools and shopping centres.
Merry Christmas to all.
Adele
Australia
Can you please go through the rules for today’s puzzle?
Mayundo, there are no extra rules for today’s puzzle. The usual ones apply:
1. Each row, column, nonet and diagonal must contain all numbers 1-9.
2. There are 10 diagonals in the puzzle (some of them overlap each other).
3. Digits cannot be repeated within a cage.
4. Numbers within a cage must add up to the cage sum indicated for that cage.
The puzzle is quite difficult to solve. I hope you solve it this year, though :).
Good luck!
It certainly is, but I’m determined to do it!!!
There is a text file to import today’s Killer into Perfect Sudoku, but I can’t figure out how to do it. I only see a standard killer when I import it and not the five overlapping ones. What settings should I use before I try opening the file?
Iris, the text file is yesterday’s file. I removed it now.
Samurai puzzles cannot be imported into Perfect Sudoku (yet?).
Sorry for this confusion.
thanks djape, found where i was going wrong and completed it. Have printed off today’s to do on my journey to relatives tomorrow, xmas eve. Thanks for all the puzzles – I thoroughly enjoy doing them.
Merry Christmas and a happy new year to you all
NDs 6th is out and should keep you all busy for the holidays, or until DJs next one.
Merry CHristmas
Adele
Australia
Cheers Adele. Merry Christmas. (even though I’m a non-believer)
Mike Japan
“Gee honey, sorry I forgot to go buy the turkey, I was just so engrossed in the Killer Sudoku X!”
That’s one hard puzzle, thanks, djape!
Wow! 22 Dec Butterfly is superb! 4 interacting Sudokus (and diagonals), with a wealth of complexity and interactions all in 16 nonets!
Yet solvable by logic alone, without requiring any of the more abstruse T & E based techniques that are the basis of difficulty in most other really difficult puzzles. Brilliant.
I loved it.
I agree, the samurai killers are almost too daunting as regards sheer time, but oh! the satisfaction when one comes out. In the loo??? I still need to have my obsessively-made list of number combinations, and a calculator for quick checks, so not a possibility.
Many thanks for producing these puzzles.
I am struggling with Friday’s killer. I have found a solution to the bottom right puzzle and to the central one, but keep finding anomalies trying to get into the other quadrants. Is it possible that on a stand alone basis there is more than one solution to the bottom right one, and for that and the centre one together? This is to allow me to work on from where I am rather than go back to the beginning!
I am not sure that thanks are due for something that consumes so much time, but keep up the good work anyway! And best wishes to you and all addicts for 2006
Oliver
Hi there!
Just to say Thank You!!
Really!! I don´t have to wait till sundays to solve a killer. And now… WOW… a Killer Samurai!!
Thanks, to who-ever is responsible!!!! 🙂
Hi dj,
No killer today?
For anyone still working on Friday’s killer, I was able to solve the top-left one all by itself, from the start.
Great IQ puzzle, found it quite unique.
*** SPOILER ***
The way I approcahed it was looking at the connections between R3C2 and R1C6 (sum = 4) and between R9C4 and R7C8 (sum = 11) (using the 45-sum rule on nonets 1+2 and 7+8 respectively).
after figuring out the numbers in these cells, the rest was quite usual.
Shai,
Israel