In chess if only their king is on the board?

Answer 1

There are only two outcomes: you win or you draw.

In some play, it is considered a draw if you have not been able to mate within 30 moves or if the same set of moves is repeated 5 times.

Answer 2

When only your king is left in a Chess game, your opponent will try to checkmate your king. If they can't accomplish this, the game amounts to a draw.