Now, from your original starting level of 25, you have to make sure your opponent starts on a losing level every single turn— if NIM starts on a winning level even once, it’s game over for you.
现在, 从你最初的 25 级开始,你必须确保你的对手每回合都以失败的等级开始— —如果 NIM 哪怕有一次以获胜的等级开始,你的游戏就结束了。