On Mar 26, 2015 5:39 AM, "Ian Kelly" <ian.g.ke...@gmail.com> wrote: >
> "Hard" for a human doesn't necessarily mean "hard" for a programmatic > solver in this case. Try your solver on this one: > > $ cat sudoku2.dat > . . . 7 . . . . . > 1 . . . . . . . . > . . . 4 3 . 2 . . > . . . . . . . . 6 > . . . 5 . 9 . . . > . . . . . . 4 1 8 > . . . . 8 1 . . . > . . 2 . . . . 5 . > . 4 . . . . 3 . . > > I tried the first puzzle you posted, and it took about a second. I > then started running it on this one before I started typing up this > post, and it hasn't finished yet. Sooooo... Is it done yet? And if yes, how long did it take?
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