it's no different than recovering anything.
Find the best place for your recovery vehicle to get traction, run a strap to it.
Use a bar across the three point to hold strap so you can vary the angle a bit.
engage the locker in the tractor and the front axle if you have it.
pick a low gear and creep.
if that doesn't work, find a different spot for tractor to be.
but if I can unstick a buried 2wd chevy 1500 with a 20HP diesel tractor, that bigun there should pull anything you want out of anything, what is that, a 35 HP machine?
what kind of air pressure you running in the tires? It's counter intuitive, but sometimes increasing a tractor tire's pressure results in better traction. At least with chevrons.
and if all that fails, it's a tractor that weighs 6-8K lbs. Run your strap to it loose, pick a high gear and snatch that shit. momentum is your friend.