Which are the 3 games?

The same thing happens to me every so often - usually when I'm playing the same level (easy, medium, hard) repeatedly. Frustrating, but eventually I get off the loop.

The best way to find the games you haven't played yet is to go on your profile or click "all games" and it lists all the games for the last month.

I feel the same way. In fact, I can't swear to it, but I think I've gotten credit for solving the same puzzle more than once. Has anyone else had the cards stick and refuse to turn over and had to start the game over?

Yes , when I was using IE. I'm using firefox now. Much less problems with it. I only have problem with it crashing sometimes. I do not think all the bugs have been worked out with Windows 8. It is crashing less now, because I send them a crash report. I hear google chrome works well too. Hope this bit of information helps you.