Arm Triangle

Executing an arm triangle choke from a scarf position after a 2-on-1 Russian Grip:

1. Start with a 2-on-1 grip, perform a step and a pancake to end up in a scarf position.
2. Instead of attacking the arm, slide down the arm to secure a high scarf position on the opponent's chest.
3. Ensure your leg is under the opponent's shoulder and reach for your leg with your hand, keeping the opponent's head off the mat.
4. Maintain a straight leg on the side you're attacking to prevent being rolled over if the opponent bridges.
5. Keep the other leg far out for counterbalance and flat for pushing.
6. When the opponent frames against your chest, pass their arm across their face to the other side.
7. Lean forward to keep your heads close, preventing the opponent's arm from slipping out.
8. Use the back of your head to push the opponent's arm across their throat, ensuring the choke targets the neck and not the face.
9. Adjust your grip depth based on the opponent's shoulder width, aiming for a gable grip if you cannot reach your bicep.
10. For additional pressure, you can go belly down to apply more body weight and gravity.

This sequence leads to a tight arm triangle choke, with the critical detail of using the back of your head to ensure the opponent's arm is correctly positioned across their throat.