Many matches are won by a technique called a sankaku jime in judo and reverse triangle in mixed martial arts and jiu-jitsu. The top player uses a figure four to trap one arm and choke the opponent with his or her legs, leaving both hands free to either hold the trap the opposite arm for a better pin or attempt an arm lock. It is a bad position for the player on the bottom. However ... if you are ready when the technique begins, you can launch a surprise attack counter, as shown ....
|You don't want THIS, do you?|
Step 1: The opponent puts a knee into your shoulder and hooks your arm with the other leg.
Really, really important for this technique to work --- as your opponent steps in, you are going to put the back of your hand against the knee. Your other hand is cupping the heel. You are not grabbing either leg. You want your opponent to be lulled into a sense of security. Your opponent almost has the figure four sunk in. “Almost” is a really, really important word in that sentence. With the figure four almost sunk in and you not having a grip anywhere, the opponent feels confident, she rolls to her side expecting to lock in the pin and choke as she rolls over.
Step 2: Put one hand against the opponent’s knee and the other cupping the heel.
Step 3: As your opponent rolls, spread your hands apart as far as they can go. This ends up with your opponent lying on his or her back with legs spread wide apart. Not a very defensible position. (Note: When you are resisting, the person who is applying sankaku is going to pull harder to roll you. The harder they pull, the easier it is going to be for you to roll fast right up into the opponent.)
Step 4: Continue the direction of the roll so that you are laying on your stomach, with one hand under your opponent’s neck grabbing the collar and the one that was on the knee slide underneath grabbing the leg.
There! Now that’s a much nicer position for you, isn’t it?