I will add, since you prefer to keep games going as long as possible to resigning, that you have only one move to save your king at the present, and you are going to hate it: Ln-8k. All other options result in a dead king. And you may hate me for this, but I'd rather you not take your last move back, since I believe my trapping your lion is the result of a clever combination and not you accidentally forgetting something. Even if you do this, the game is not over and my lion will be forced to retreat per your last move. Ultimately it's up to you.