FREE - In Google Play
FREE - in Win Phone Store
How can I play a specific opponent? Where do I go to enter the name for a challenge? Thanks for any help!!
If you want to challenge someone to an Online/Coorespondence game then you can go to the Members link at the top of the page, select Search Members. then enter their name, click Search and on the right side there is a link to Challenge.
If you are talking about Live, I don't believe there is a way to do it. If you and the person are on at the same time and in a chat area, you can challenge from there or if you are friends with them, you can do it in your friends list.