during the game. Select the sub-menu labeled
"end game". You will have several options.
Propose to cancel the game: Your opponent needs to agree to cancel the game. If he accepts, it will not be recorded and your ratings will not change.
Propose equality: Your opponent needs to agree to this. If he accepts, the game result will be declared nil. You need to do this if you know that the game is not going be ended normally.
Give up: You can simply give up and your opponent will be declared as the winner without waiting for the end of the game. If you want to give up the match, you don't need to leave the room. Use this option and you will keep your seat, so you will be able to play a rematch.