Sudoku Py / C++11 / D?

[maarten van damme]

> I'm unsure if searching for the field with the least possibilities was
> a smart move because now I have to carry that "taken" array through
> all my functions and optimize has to check the whole sudoku instead of
> a slice. (come to think of it, taken should've been named occupied)

I take that back, having tried it out, it is more then 3 times slower...