Welcome to my colection of Hard Halloween Spot The Difference For Kids on the series Halloween Spot The Difference. The solution to the puzzle is often listed nearby or in an accompanying answer page of a puzzle book. Additionally, one can cross one's eyes and merge the two pictures into one, in the much the same way as when viewing an autostereogram picture. The differences will appear to blink in and out of one's vision. This is a very effective method of solving these puzzles. (Source: https://en.wikipedia.org/)