New answers tagged solvability
4
My answer is
1
Devious @Deusovi has beaten me to the punch. However, I thought I'd write mine up anyway, just for the sake of a slightly different logic stream:
Here's the logic:
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First of all, the 'real' puzzle:
Now, we start in
Time for some case-bashing! (This may be doable more cleanly, but this works and it's not too difficult.)
So this gives two shaded cells:
With that shaded cell,
And this gives a unique solution:
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Unfortunately this seems to be an invalid Sudoku. It has multiple solutions, and therefore there is no logical next move.
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