Guessing Game

When my in-laws come to stay we get to play a few games at dinner time. Tonight we tried Cluedo with them. They swore they had never played before but it did come back to them gradually.
This is a tricky version with too many options for my liking. But we persevered and the old folk rambled through it. We put a time limit on (could have been there all night) and all did our guess at the end. And it really was a guess. Well blow me down, didn't the old man get it spot on. Chancer!