I don’t know if there is a species that go under that name and if there are, my apologies to them.
Another world premiere Sudoku variation puzzle – Butterfly Killer Sudoku. Thanks to one of our regular visitors udosuk for suggesting this concept – this should encourage you to suggest a layout for overlapping puzzles and I’ll attempt to create them.
Back to the puzzle – there are 4 “classic” 9×9 Sudoku puzzles inside this one. They all overlap and they all must be solved according to the rules of Sudoku. You can use Twin Nonets solving technique for this one!
Solution – first step
Solution – final
By the way, I also posted a “Diagonal Butterfly Sudoku X” on the Daily Sudoku variants page – it’s the same layout as this one, but it’s not a Killer.
Have fun!
Killer Butterfly.
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