The latest release of ChessNote (version 1.3) finally allows you to start a game with your friends. Simply tap on + button on the Games screen, select “by Email”, and type your friend email. Then it’s on!
Remember, your friend (or yourself if you are the one being challenged!) can always decline any challenge by simply going to the Game Info screen.
So, head over to the App Store and update to ChessNote 1.3!