This is a collaborative Judo Chop between Patrick Tenney and Kid Nate. Patrick did all the work, Nate pasted in the part from MMA Mania to which Patrick will no doubt object.
In one of the most appropriate submission wins ever Pat Curran pulled off a peruvian necktie choke... on a Peruvian, Luis Palomino at Bellator 46. The peruvian necktie is a variation on the standard head and arm style chokes (the arm triangle, anaconda choke, d'arce choke, arm in guillotine, etc) that utilizes a perpendicular body positioning along with downward pressure from the lower body onto the opponents back while applying upward/constricting pressure with the upper body to the opponents trapped arm and neck; these opposing pressures once secured are the basis for an incredibly tight and exceedingly uncomfortable choking experience for the chokee.
Here's a description of the hold from MMA Mania's Ultimate Submissions series:
Not to be confused with the Bolivian Neck Tie (though similarities are there) the Peruvian neck tie choke is started either in the sprawl position or as we have seen when controlling the side of a turtled opponent. You want to gain head and arm control similar to that of the set-up of the Anaconda Choke and begin to stand up while holding the position. When clasping your hands you want to use the Gable Grip that we have talked about in previous posts.
The side that you have the "arm in" position for the choke is going to be the side you sit back on. That is where the standing up movement becomes key; you need your leg over his head. The leg that is on that side should be on the outside of the non-trapped arm. When you fall it is much more effective if you do so at an angle away from your opponent. Keep that leg over the head and the other leg should be placed stiffly along your opponent's back.
As for the finishing of the choke, when you are pulling you will have a considerable amount of force on the neck which makes for an extremely painful crank. By pulling your weight back with your hands clasped and legs used as leverage you will find that if you did the set-up right the tap will come quickly.
Here in the first image we see Pat trying to get into an angle to finish the d'arce choke he set in half guard, (as a note the reason that he was able to get this grip is because Palomino was utilizing a poor underhook control from within halfguard instead of having an active/tight/turned underhook to defend against possible d'arce attacks). Pat sets in the d'arce position threading the arm on the side Palomino underhooked into an overhooking position and down across Palomino's neck while Pat uses his left arm to stuff the head so he can get a bicep or grip locked up between his two hands while Palomino's head and arm are trapped. Pat realizes he's not in the best position to finish a traditional d'arce or move to the baseball slide (or m'arce choke, named for Marc Laimon or at least that's what Jeff Glover said at a seminar) position to finish the choke so he traps Palomino's leg and tries to angle it up to the body to bend Palomino in and add extra pressure to the choke in the hope that it is enough to finish.
In the second image Pat is trying to adjust his grip and stuff Palomino's head inside (using the blade of his wrist/forearm) so that he can lock a proper bicep grip to finish the choke, Palomino is defending well here, trying to keep his head back and his trapped arm from being trapped against Curran's body while he uses his other arm to try and break the grip to escape the potential choke. You can see once the camera focuses out that Curran is now at an angle with Palomino, this angle provides the potential to slide the overhook arm deeper through to make the bicep grip easier to achieve while also setting up the finish allowing you to sprawl down on the trapped arm of the opponent to apply your body weight onto the choke, Curran's leg is still in the half guard but in this situation it becomes almost a non-issue unless Palomino is a wizard of a deep half guard player. Towards the end of the image is when Pat is starting to think Japanese necktie I believe as you see his left leg hike up to set up an angle for when he jumps it over Palomino's head.
(Side note: The Japanese Necktie is a variation on the Peruvian Necktie that requires the d'arce arm positioning i.e. your arm overhook threading the opponents arm and then around the head, rather than going under the head and then under the arm; confusing these two types of head and arm chokes is very common and drives me batshit crazy).
Curran has now escaped the leg that was still in the weakened half guard of Palomino and forced Palomino into the turtle position (essentially Palomino's only option for continued defense of the d'arce). You can see that Curran has now switched his arms into a more central position with his grip clasped directly under Palomino's throat instead of his forearm/bicep being there in the d'arce. Curran backs his hips up to make space and then hops his left leg over the head of Palomino (this forced the head down and into the choking arms) and then Curran sits back with his right knee bent and that leg up against Palomino's body. Once Palomino falls back with Curran's weight dragging him Curran swings his right leg up and over the lower back (or as high as he can get it) of Palomino trapping the choke and preventing a possible roll out situation. Palomino briefly fights the leg trapping his head but Curran has it too deep and Palomino is forced to tap due to the amount of pressure being applied to his neck and possibly adam's apple.
The two necktie variations are extremely slick and underutilized chokes, mostly because there are less risky options to finishing the two positions than trying to get your legs up and over your opponent in that manner.
Below is a nice bonus video of Braulio Estima doing some light rolling with fellow black belt Lagarto that contains a slick Peruvian necktie finish. Enjoy