When was the last time I posted a Killer Sudoku variant puzzle for the first time? I can’t remember. Well, nearly 8 years (I’m a bit slow, you know) after publishing first Killer Sudoku, it occurred to me that there is no reason not to add the 0 into play.
So… ladies and gentleman… a world premier (or is it?)…
Killer Sudoku 10×10
– use digits 0 to 9 to solve this one!
How to solve this? Well, use exactly the same techniques as you would normally. The rule of 45 still applies – we are only adding the 0! However, be careful when analyzing cage combinations – things are now quite different and there are more options for each cage sum. And don’t be surprised when you see a sum of “2” over 2 cells. 1+1 is not an option (no repeats, of course), but there is now another possibility: 0+2!
What do you think? 🙂
Killer Sudoku 10×10.
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