While watching the "Oxford Murders"(2008) the other day, I was particularly intrigued by the "M heart 8" puzzle that was mentioned at some point in the movie. It basically is a capital M above a heart which in its bottom end is crossed by a straight line and beneath it is the number 8. This is a symbolic symmetry of some kind and you are supposed to find the next symbol that goes under 8. It is really hard, my brother and his friend who are supposed to study algebra and stuff couldn't figure it out, but once you find it or you are told the answer it is pretty amazing. It is actually brilliant!
The answer :
Divided with a straight vertical line, the symbols are cut in half and reveal four numbers.The M becomes two 1, the heart two 2, the 8 two 3 and the one that you are expected to find becomes two 4.