when to quit match without losing points

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kurabica
I have two questions.. Sometimes I quit matches and lose points and Sometimes not.. why is that The other question, what is the green little square that somtimed appears on my profile picture
the_real_greco

The square is if you're in Live Chess, but not currently playing a game.

If you don't want to play any more, you should resign your game. Unless your opponent hasn't moved yet, this should always make you lose rating points.