@nh78 I can as well argue that if in your study the black king is on e1, this would be stalemate on move 6. It's hard to come up with a really universal method, so better move your own king away from the mating net.
However, there is a general principle that never fails assuming that the defending side has the sole king. Premove in such a way that you DON'T CHECK the square where the king is placed now. Then the opponent's king moves to the adjancent square on his move, and your move will leave the square it came from free. This can't be really applied at each move in time scramble, but, as an example, in the critical moment of crossing the 3rd line your can choose between Qeg1 and Qef1 depending on which move doesn't check the current king placement (here on g4, so it is Qef1 to pick).
However, there is a general principle that never fails assuming that the defending side has the sole king. Premove in such a way that you DON'T CHECK the square where the king is placed now. Then the opponent's king moves to the adjancent square on his move, and your move will leave the square it came from free. This can't be really applied at each move in time scramble, but, as an example, in the critical moment of crossing the 3rd line your can choose between Qeg1 and Qef1 depending on which move doesn't check the current king placement (here on g4, so it is Qef1 to pick).