NOTE: This is a D&D question because a lot of games make the question moot: they have built in systems for treating a combat as another sort of gameplay element (like Dramatic Tasks or Quick Combats in Savage Worlds).
So, the 7th level party is traveling through the Goblin Forest and encounters Goblin Warband. The appropriate establishing and reaction rolls are made, and the goblins attack. The gobs have no chance outside of really, really bad rolling on the part of the players. The fight is not part of the main storyline or anything. Do you run the whole fight down to the last goblin HP? Do you run the first round or two and (assuming things are what you expect here) have the goblins run, surrender or just tell the players "you finish them off." Do you skip it entirely or fudge the dice so it was a more level appropriate encounter?
What if it isn't a random encounter? What if the Penultimate Battle (the one before the boss fight) has turned into a slog due to bad luck, bad tactics or some combination. Do you keep at it because it is important what resources the PCs use up before the boss fight? Do you cut it in the middle and "charge" the PCs some spell slots, hit dice, and/or other resources?
In D&D, have you implemented something like Quick Combats or Dramatic Tasks to deal with these sorts of things? If so, what and how do they work?
So, the 7th level party is traveling through the Goblin Forest and encounters Goblin Warband. The appropriate establishing and reaction rolls are made, and the goblins attack. The gobs have no chance outside of really, really bad rolling on the part of the players. The fight is not part of the main storyline or anything. Do you run the whole fight down to the last goblin HP? Do you run the first round or two and (assuming things are what you expect here) have the goblins run, surrender or just tell the players "you finish them off." Do you skip it entirely or fudge the dice so it was a more level appropriate encounter?
What if it isn't a random encounter? What if the Penultimate Battle (the one before the boss fight) has turned into a slog due to bad luck, bad tactics or some combination. Do you keep at it because it is important what resources the PCs use up before the boss fight? Do you cut it in the middle and "charge" the PCs some spell slots, hit dice, and/or other resources?
In D&D, have you implemented something like Quick Combats or Dramatic Tasks to deal with these sorts of things? If so, what and how do they work?