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: solving technique

Mini Killer Samurai!

This is another world-premiere puzzle – 2×2 Killer Samurai! So, you only use numbers 1-4 and everything else is the same as usual. If your kids are struggling with “big” Killers, give them this one so they could learn the solving techniques etc. But first make sure YOU are able to solve it! 🙂 Click […]
Killer Sudoku Samurai: 65 puzzles (Volume 1)

Posted in Free sample puzzles, Samurai sudoku | Also tagged , , , , , | 4 Responses

Twin Nonets

Lets formalize the technique that can be used when solving overlapping puzzles, which I have been referring to as “the new solving technique” and that I now call Twin Nonets. Basically, this technique is a sub-technique (or if you like – a consequence) of the naked/hidden triplets technique that you are all probably aware of. […]
Posted in Solving tips | Also tagged , , , , , , , , | 12 Responses

No Samurai X today! (again!?)

Instead, a very similar yet different variation – 4 puzzles in an X-Ring. This is not to be confused with the X-Wing solving technique! X-Ring for Saturday, December 03 – this is the only place you can find these kind of Sudoku puzzles! Basically, not only do you have to fight against 4 interconnected Sudokus, […]
Samarai Sudoku book

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Triple X

Another overlapping sudoku variant – now with 3 Sudoku X puzzles. Warning: This puzzle is quite difficult even that it can be solved using only basic sudoku solving techniques. You must work on all three puzzles in order to get the solution. Also, I think you might get confused about the “fourth” puzzle which you […]
Diagonal Sudoku X

Posted in Free sample puzzles, Sudoku Variants | Also tagged , , , , , , , , | 15 Responses

Diagonal Sudoku Wing X

Instead, a very similar yet different variation – the true Wing X. This is not to be confused with the X-Wing solving technique! Wing X for Saturday, November 26 – this is the only place you can find these kind of Sudoku puzzles! Basically, not only do you have to fight against 5 interconnected Sudokus, […]
Super Sudoku Quad Samurai Puzzle Book with Variants

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More Swordfish

I posted another classic Sudoku that requires Swordfish/X-Wing solving technique. You should practice this technique because at some stage I might post a Killer Sudoku that will require you to use this technique to solve the puzzle. Maybe. 🙂 Of course I also posted another Killer – it’s a Brain X. Have fun.
Posted in Killer Sudoku | Also tagged , , , , , , , | 2 Responses

Swordfish

As promised, I implemented the Swordfish classic Sudoku solving technique in my Perfect Sudoku software and generated a few puzzles. I just posted one of them on the Daily Sudoku page. However, I ran my generator and generated a couple of thousands Killer Sudokus and NONE of them required Swordfish, just as I speculated before. […]
Posted in Killer Sudoku, Solving tips | Also tagged , , , , , , , , , , | 8 Responses

Subtraction combo

Udosuk, one of our visitors who is most active in giving hints for the puzzles we post here, has made a suggestion for a new solving technique for Killer Puzzles. He calls it “subtraction combo”. I’m posting his explanation here (slightly modified): I’m proposing a trick which I think many players already knew, but I’ll […]
Posted in Solving tips | Also tagged , , , , | 3 Responses

Puzzle difficulty

First of all, I posted a Killer X puzzle rated THINKER for today. I would like to know how difficult you find this one. Regarding the INSANE puzzle posted on Friday – I see that there has been a lot of discussion regarding it’s difficulty and the difficulty of some other puzzles posted last week. […]
Posted in Killer Sudoku | Also tagged , , , , , , , , , , , , , , , , , | 3 Responses

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
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