what i think bullethead1 means is that its difficult to select a piece which is mostly covered by another piece as clicking one said piece which result in you picking up the piece on top
Well that's part of the game. In real world puzzles you can not pick the puzzle below without first interacting with the puzzle above.
But even then when the game starts all the pieces are arranged in such a way so they do not intersect beside the white piece that you cannot move.
THANK YOU FOR THE FEEDBACK I'LL TAKE THIS INTO CONSIDERATION