Artemis BJJ (MYGYM Bristol), Can Sönmez, Bristol, UK - 29/07/2016
The shin-to-shin guard provides an additional pressure to your sweeps, giving you the very useful ability to lift compared to koala guard or de la Riva (or at least, I find it's much easier to lift with shin on shin than de la Riva). I first started playing with this after my instructor showed me some options at a private in 2015, then in more depth at Ana's seminar. Put your shin in front of their same side leg, wrapping behind that leg with your same side arm. Your other leg pushes on their knee. That will normally make them post their arm, or at least put the arm in range.
Make sure that the knee on your shin leg is at forty five degrees. If it is too high, they can push your knee out of the way and pass, so keep it low enough to prevent an easy push. Grab their sleeve, with the intention to pass their arm under their leg to your other hand, which is waiting there behind their leg. With your passing hand, grab high on the arm you just controlled, up near their shoulder. Pull down on that arm as you lift with your shin. It's much the same motion as the basic de la Riva sweep I was taught at GB Brum.
Another option is to instead grab their far ankle, rather than high on their arm. This is to block them from stepping to recover their base. You can then again lift with the shin and drive through for the sweep. That's especially useful if you can't get their arm, when you can (again like the de la Riva series from GB Brum) grab their belt or gi tail instead and pass that under their leg. Should they base out heavily on their arms when you go for the sweep, you can potentially switch to a single leg by swivelling around behind their leg, or move to take their back.
Teaching & Sparring Notes: I'm wondering if I should teach this as starting from feet on hips, pushing into the knee and sitting up. That's how Ana taught it, which I think would make more sense. Going straight to the shin-on-shin position isn't going to happen in sparring, so some kind of set up would be handy. I'll also get a feel for that as I continue to use the shin-on-shin more often in my own sparring.
Sparring with Matt, it seems a good way to stuff the shin on shin is to crouch low, which worked well for me when I was on top. If they leave any space, you can also quickly swivel your foot past the shin to re-establish passing posture. I need to have a think on how to stop that messing up the guard. At the moment, I think pushing into their knee with your free foot makes sense. Same goes for the deep de la Riva, what to do when that goes wrong? Chiu's hybrid spider may be a good one, as it doesn't rely on the really painful grips, instead grasping the collar of the jacket, pushing into their arm. That's an option I used to do a lot, based on Xande's DVD. I'll have more of a play with that again.
Another interesting thing Matt has been doing more often in sparring is turning to turtle to avoid my pass. I haven't been getting an over-under grip on his arms quick enough. Perhaps more Adamson style passing to mount is required? Or just take the back more effectively, I guess.