This is the archive of the old posts from Djape .Net, more or less as they used to be. Please go to djape.net to see the new website.

Tag Archives: outie

Complex innies/outies

One of our visitors (Phyllis) asked about the puzzle posted on October 13. Now, this puzzle definitely doesn’t need any trial and error to be solved – in fact it’s only rated as “thinker”. However, it requires a technique that in the new version of Perfect Sudoku will be called “complex innies/outies”. It is basically […]
Fiendish Killer Sudoku Book

Posted in Free sample puzzles, Solving tips | Also tagged , , , , , , , , , | 3 Responses

Cindy’s puzzle

Cindy, one of our regular visitors kindly asked me to post a daily puzzle today and I couldn’t say no :). So, even that I usually don’t do it on Saturday’s – you can find a very nice Killer Sudoku on the Daily page. It’s interesting that this one after the usual procedure of finding […]
Posted in Killer Sudoku | Also tagged , , , , , , , | Leave a comment

September 27 solved!? Or…

I’ve received a possible solution for September 27 puzzle using only minor trial and error from udosuk. Here are his comments. You can also download the images that he sent: Firstly, the first pic (dk0927a.png) shows the steps I last posted which narrows R[1,2]C7 to {25} and then some more… From there I’ve worked out […]
Posted in General | Also tagged , , , , | 1 Response

Cage Splitting – Killer Sudoku

Ok, here is the explanation of the “Cage/fence splitting” solving technique for Killer Sudoku puzzles that I promised before. I will use the puzzle posted on Friday, October 7 and solve it step by step using this method. We extend the idea of the “innies” and “outies” solving technique, except that you’re not looking for […]
Posted in Killer Sudoku, Solving tips | Also tagged , , , , , , , , , , , | 2 Responses

4×2 Killer Sudoku!

Today’s puzzle is not the ordinary 3×3 Killer Sudoku, but rather it’s a 4×2 variant. All rules remain the same, except that there are now only 8 digits used (1-8). NOTE:Since only 8 digits are used, the sum of all boxes, rows and columns is 36! Be careful when you look for “innies” and “outies”! […]
Posted in Killer Sudoku | Also tagged , , , , , , , , | 1 Response

The Rule of 45 of Killer Sudoku (innies and outies)

This tip is probably the most important solving technique of Killer Sudoku, one that will save you a lot of time. It does involve some math, but very simple one. Basically, the whole story is that you have to bear in mind that 1+2+3+4+5+6+7+8+9 = 45. Very smart, huh? Well, maybe not so, but it’s […]
Posted in Killer Sudoku, Solving tips | Also tagged , , , , , , , , , , | 3 Responses
eXTReMe Tracker