I think I need step-by-step help in understanding caravan. I've spent the last hour with Lacey at Mojave Outpost (having cleared out her caps so she only bets 1 cap) and reading online guides trying to figure out this cardgame, and every time it seems like I got it I'm flummoxed by another wall. It's not just that I'm frustrated at not winning, I don't think I fully understand even the basic rules of the game.

For instance. From what I've read you need to place down cards in ascending or descending sequence, unless I have a card of the same suit, in which case I can play cards of the same suit instead. Sounds kind of like the rules of Uno. But then why, in the situation in http://imageshack.us/photo/my-images/854/2013031700001.jpg/ screenshot, am I not able to place that 10 of Hearts on the Boneyard caravan? It kinda seems like it'd be a legal move either by the ascending number rule (higher than six) or the same suit rule (both hearts). So why is that an illegal move? If I remember correctly I couldn't place any other cards down either in that turn.