The manual says that the game i s over when all the on-squares have been marked correctly. That makes sense. But occasionally it happens that after I have marked all the on-squares right, I still need to mark one or two off-squares, before picmi accepts that the game is over Reproducible: Always I have not been able to pinpoint the exact logic behind this, but I suspect it has something to do with the coloring of the numbers on the rows and columns - which should not affect the end of the game in any way. Of course the game is playable as is, but it is a slight irritation that I have to mark the last empties - and not even consistently. As far as I see it, the logic ought to be simple: If all the on squares are marked as on, and none of the off-squares are marked as on, then the board has been solved, and the game is over.
*** This bug has been marked as a duplicate of bug 341543 ***