When I play head to head, I come across people who have clearly lost to me, but will not give up the game. This is extremely frustrating. I played with a man tonight, I was ahead 120 to 240. He continued to replay his cards over and over for 1 1/2 hours. I told him I was not ending the game as I was clearly the winner. You need to either put time constraints on head to head or only allow a person to replay cards so many times. Another trick "they"seem to try is get you to press the check button and then they play there magic ticket, so you lose. very frustrating and this happens daily.