A) Snatch singles.

Build up to a heavy single snatch. Max out.
You are allowed 3 failures before calling it quits.

B) Back squat open set

Use 94-100% weight and do a single set of as many reps as possible of back squats. Rep range 2-10 reps.
If you don’t know your 1RM, then use a heavy weight you feel confident in hitting around 3-8 reps max.

Use Epley’s formula to calculate new 1RM estimate

(Weight x Reps x 0,0333) + Weight
= Estimated 1 rep max