I created a thread years ago with the same title, but I can't find it, so instead of resurrecting it, I need to create a new one. It involves a hobby of mine in which whenever I see a chess board in a store display, I habitually check to see if the position is legal or not. My experience is that at least 70% of the time, it is not a legal position. I recently found this item at a store and was surprised that an illegal position was on the box. It's not hard to see why it is an illegal position, but I'll leave that as an exercise for the student. Remember, there are two parts to the "proof" that the position could not possibly occur via legal moves. The first part is obvious. The second part involves pointing out that only one piece on each side has been captured.