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.

Butterfly Killer Sudoku X

By djape | Published: September 21, 2006
It’s been a while since I last posted a Butterfly Killer, let alone one with the “X” factor. So, here it is – and to spice it up a little, I made it quite hard (altho I expect someone to get back in 20 minutes and say it was way too easy). So, you get 4 of your favorite Killer Sudoku puzzles in this one, heavily overlapped, plus all 8 diagonals must not contain duplicate numbers. Make sure you remember Twin Nonets and Twin Diagonal Triplets techniques! Butterfly Killer Sudoku X for Thursday, September 21 – IQ – this is the only place you can find this kind of Sudoku puzzles!
(click to download or right-click to save the image!)

Fiendish Killer Sudoku Book


To see the solution to this puzzle click here
Have fun!
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