Too Many Errors – ChessVisionDrills Review

I was hoping this app would be great as there are no other chess drills I know of in App Land. But this app misses correct answers and calls them incorrect. It's too bad. The developers should return to the drawing board and refine what would have been a good chess drill. UPDATE. Just figured out that an answer is marked incorrect if the forked,or skewered piece can make a follow-up move to a square that aborts the fork or skewer.
Review by Arcsterra on ChessVisionDrills.