quick chess etiquette question

If it's a tournament, then it's very likely against the rules since you're not supposed to speak except for a few specific situations.  In a more casual setting I'd still say bad etiquette.  I'm sure the person on the other side of the board can figure it out for themselves.

I know what you mean... beginners don't know that the most common way for a game to end is resignation. They think they have to keep playing, but after they realize you're far ahead they can get kinda depressed like they don't want to keep playing.

I usually say nothing, but if it seems like they want to stop playing then I usually figure out a way to mention that in almost all the games I lose it's because I resign.

However losing a queen usually isn't enough to make a beginner that sad. If you bring it up after winning their queen you're probably just gloating / being a jerk.

@belatucadrus. Well said. Agreed.

I have no problem resigning. In fact, i do it quite often! But I wouldn’t suggest to an opponent that they resign. It’s part of learning the game, when to resign and when to play on. Now, occasionally when behind I’ve admitted defeat but asked if they are open to playing on for my edification. Once or twice it’s been accepted. Never been in an OTB tournament, just playing on-line.