mí no comprendaaaa. I guess that some data are missed. If you only move one piece each time, I think that the minimum number of moves are 4, but if you can move more than one piece each time, so the minimum is 2. If they can bounce off the wall, maybe 1 move?

I have another challenge: in one trielo (like a duel with three contestants). They all know the probability of success in shooting the others:

A: 100%

B: 50%

C: 25%

Since all of them are gentlemen, decide the order of shooting: In order starting with the worst shooter.

The question is: What should the C shooter do to maximize his chances of success, ie win the trielo?