Merry Christmas! :)
Merry Christmas to all that will celebrate it on December 25 and happy holidays to everyone else :). I uploaded the most difficult puzzle yet for this occassion – it’s a Killer Samurai X. It’s not difficult because it’s an…
Tag: 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…
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…
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…
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…
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…
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…
X-Wing
UPDATE: I changed the image to reflect an actual X-Wing. As a matter of fact, this is the puzzle that I posted a couple of days ago under the “daily Sudoku” page. Here is a quick explanation for the “X-Wing”…
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…
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…