If you have two players doing nothing but blocking each other you can end up with no tickets completed by either side. I don't play 2-player (particularly online) because that's all some players live for -- complete a six-point ticket and then make sure the other guy can't complete even that much. It's this ugly degenerate form of the game that's a lesson in frustration.
As far as I'm concerned it's a three-player game minimum.
Would it kill you to put the complete game in the first box?