[sushimako]

Very cool! It keeps saying that it's not solved correctly, but i cannot find the mistake: http://i.imgur.com/qPJLafH.png

Already ironed out identical columns but can't seem to find anything else. Any idea?

[coroxout]

I also have a filled-in square which it says is incorrect with no indication of where/why it's incorrect, which is quite frustrating. Would it really be too easy if you could guess and then be told why it was inconsistent?

[cerebrum]

1. and 6. row identical.

[sushimako]

1 & 7, thanks!