You don't have to do anything. The game is simply over, and it should say <opponent name> won by checkmate.
How acknowledge checkmate?
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If the software hasn't told you that you have been beaten, you probably weren't checkmate. Other possibility is that you are using software unknown to me.
Jul 30, 2009
0
#4
OOOPSIE...I see the problem. The software could see that I could block the attack. No wonder it didn't say "game over". Chess.com works correctly.
Hi,
I just got beaten in chess. I see that I am in checkmate. How do I tell the software that I acknowledge that I lost? Resign?