You have to be a member to see these, but I know one of them is here:
https://www.youtube.com/watch?featur...&v=yztWmlvCJeU In that you'll see an anaconda choke and then a darce choke. he uses the far leg to smash down their trapped arm to deepen the choke.
This is the best video to see of the Rafaconda in action. He does it like 4 or 5 times in a row:
https://www.artofjiujitsu.com/online...ion-08-07-2012 if this site won't give you any free views, you can see it here.
http://gifsoup.com/view4/3410044/anaconda-choke-o.gif
Basically he thinks it's not efficient to try to fight the underhook with an overhook, so if he's trapped in half guard and they have an underhook, he grabs an arm-in guillotine grip and front rolls through half guard to take the power out of their underhook. From there he can use his legs to switch the anaconda (options 1), darce (options 2), or mount with the arm-in guillotine grip (options 3).
This is a good one with various setups for the anaconda and darce. There are 2 rolls in the video, and the 2nd one is where the good stuff is -
https://www.artofjiujitsu.com/online...nogi-6-13-2013
He busted it his anaconda choke at his first ADCC in 09 when he was like 19 and used it in like every match. He's polished it up a lot since then, but I think most of those matches are on youtube. But I can only embed one video per post on here.
https://www.youtube.com/watch?v=Nw2xfELw4wc