Ruined by Alvin and Dexter

Alvin and Dexter are an add on for the wonderful Ticket to Ride board game.  

You can use them with any version of the game. They are a thwarty type thing you can use to stop your opponents from building train lines to particular cities. 

I was kind of excited to see how they work so we had a go with them today.  And they were promptly used by everyone else to stop me from building anything and making sure that I came a really poor last place. (at least, that's what I'm telling myself)

Oh well. There's always next time...