The Brabo Choke From Half Guard is a powerful choke you can do when you're in the process of passing your opponent's Guard.
bjj resources: February 2016
Choking without passing the half guard first: the Brabo Choke with the gi : r/bjj
No Gi Brabo Choke from Top Half Guard - Grapplearts
Closed guard lapel : r/bjj
BJJ 101: Brabo Choke
How To Do the Brabo Choke In The Gi
Brabo From Halfguard
3 Arm Triangle Variations You Need In Your BJJ Arsenal
The Brabo Choke