It is possible to stalemate an opponent who has more pieces on the board
than you have. For example, consider the drawn endgame where White has a
King on 'c1' and Black has a King on 'a1' and a Pawn on 'a3'. If
Black moves his Pawn a3-a2 and White moves his King c1-c2, then the game
has ended in stalemate.