Weekly Samurai X
Samurai X for Saturday, November 19 – 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, but you also need to be carefull about…
Author: djape
Traveler. Tanguero. Sailor. Puzzle maker. PhD student. Computer Scientist. Author of over 70 puzzle books.
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…
Weekend Special – Insane Killer
Ok thanks for all your comments to my post regarding the difficulty of some puzzles. I completely changed the rating system and created a large number of puzzles just to test it. As promised – I just posted an extra…
Weekly Samurai X
Samurai X for Saturday, November 12 – 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, but you also need to be carefull about…
Sequential Sudoku
Here is another very special Sudoku puzzle. In fact, it’s not only one puzzle but rather six of them, although you cannot solve them separately. Instead, you must solve them in the given sequence, because in order to solve a…
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…
Weekly Samurai X
Samurai X for Saturday, November 05 – 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, but you also need to be carefull about…
Daily & Weekly Puzzles
Since it seems that this week’s brain X was a tricky one, today I didn’t post an INSANE puzzle, but rather just an IQ. It’s still quite difficult – maybe even more difficult than the brain X. I also posted…
Welcome new visitors!
Yesterday there was a post at blogs.guardian.co.uk about Killer Sudokus and a link to our site was posted. As a consequence, we’ve had some 600 referrals from that post within 12 hours (and overnight too)! I’d like to welcome our…