Times are a-changin' ... It looks like Gracie Barra Seattle will be at the Tully's location from now on. Mamzinho is teaching, the glass case of GB t-shirts etc. is now down here in the warehouse, purple and brown belts popping up all over the place ...
Funny, just as I was looking for more attacks from the north-south position, guess what Mamazinho puts on the menu? We learned three different attacks that involve shifting from north-south back and forth to side control: a devastating choke, an armbar and a kimura.
All three attacks begin from the same north-south position. The set-up begins with the bottom guy reaching around your waist, hugging you toward him.
You reach back and grab the guy's collar, trapping the arm on that side. Scoot over into side control (on both knees) on the side of the arm you trapped. From side control, reach with your other hand (your northmost hand) and get a choke grip on the guy's far collar. Go thumb first.
Make sure the forearm of the choke grip hand is across the neck. Switch your hips to open up to the south. With a firm grip on the collar, bring your forearm down across the front of the neck. Use your weight in south-facing side control to help drive the choke and get the tap.
The next variation is the armbar. Here you start from the same place, but you are going to armbar the far arm. From side control with the arm trapped from the basic north-south grip, you go back to north-south. Wrap up the far arm and turn into the guy, putting your southmost knee into the belly and turning into the armbar.
I don't think that's exactly right. I think this one will work, but I'm not sure if it is the one that Mamazinho showed us. I need to think about it some more--or ask somebody to show it to me on Wednesday when I'm back in class.
The kimura variation comes when you attempt the armbar, but the guy grabs his belt to resist. You switch from the armbar grip to a kimura grip and pull the arm toward you first, then back and away for the kimura. This one I do have correctly. It is the entry into the armbar that I'm still a little confused by.