The game, developed by Romanian company Lasting Software is simple: it is the classic solitaire, but with a trick: playing against another competitor into the server, counter-time. So who finishes first, takes the points.
The system is cool: once connected to the server, the game knows who you are by e-mail which you synchronized the phone. I, for example, play this game on two phones- Desire HD and HTC Wildfire S, I was very pleasantly surprised that both games are connected to the same account. More: If you start the game on a phone, after you start the other, the second game will continue where you left the first.
I played the Solitaire Challenge game for a week on my HTC Wildfire S and I just barely managed to get into top 15 -but generally I’m currently ranked 170th (but by morning there’s time).