puzzle not completed

[auranian]

I finished this puzzle but it is not like completing it is just sitting on the solving screen, I have done a few other puzzles where once i finish it goes to the end screen. i waited for about a minute and tried to undo and redo a move and it still would not finish.

[admin]

Column 2 is incorrect. Each number must appear only once in each row and column.

I will look into creating a visual cue when a number is duplicated in any row or column. That should prevent this sort of confusion in the future.

Thanks!