First: I love this type of puzzle and have played them for years. I started in Games Magazine, then on PC, now on Nintendo handhelds. On the iPhone, I find the controls so awkward that I have deleted the app. That cursor square? Who's bad idea was that? Generally the game is not as responsive as it should be, so that multiple attempts are necessary to get lines placed. This app just sucked all the fun out of a great puzzle form.