Two players are playing a variant of chess on a 8x8 grid. The first player controls a white knight that starts in the top-left corner. The second player controls three black knights that start in the other three corners. The first player aims to avoid being captured for as long as possible, while the second player aims to capture the white knight. Players alternate in making moves: the first player moves his white knight, then the second player moves all his black knights and so on. Passes are not allowed. The white knight is allowed to capture black knights.
If both players play optimally what would be the outcome of this game? Can white escape indefinitely? Can black guarantee to capture white no matter what he does? Bonus question: what would happen if the second player had just two black knights instead of three?