Boogie said:
In Before NLB2 turns this thread into a BJJ lesson on the rear-naked choke ;P
heh heh, Guillotine choke has more practical aplications for people who don't train. You teach somebody a Guillotine and they can take out most any folkstyle wrestler. At least that's been my experience with it.
But it is easier to explain a blood choke using RNC as an example.
http://bjj.org/techniques/jen/tech8a/
and guillotine choke (with which many fights will be won with very little training for you lazy people)
http://bjj.org/techniques/barra/soca/
The choking is more or less the same with a guillotine choke as it is with a rear naked choke. He's obviously not applying pressure to his elbow with his other elbow; it is more likely that he is pulling his right wrist in a direction perpindicular to his opponents kneck with his left hand. The fourth image in the series is most likely unnecesary. Your opponent will likely continue with the takedown, not knowing that going to the ground will increase the effectiveness of the choke. However it is important to control your opponents body with your legs once the fight goes to the ground. It is generally easiest to pull a guard by wrapping your legs around his body.