R Hansens says: >If we look again at how (poorly) the problem was originally stated...
It could have been stated better. But I think the puzzle-worker filling in and enunciating some conditions that turn it into a mathematical problem are maybe 60-70% of the value of the problem, such as it is.
R Hansen says: >I still say that Elander's answer of "5" works best.
Nonsense. It takes 0. You just pick three riders and shoot out the kneecaps of the others.