LSAT 62, Logic Game 4, Question 21, LSATHacks

LG Game 4 Question 21 Explanation, by LSATHacks

This question gives us a new rule. First, draw that: Sanderson is fifth.

Next, see which rules are affected. The first rule says we need ST or SU. When I was doing this game, I drew both possibilities. When I did that, I realized the SU is impossible here, because R and W must be after U. 

So T is sixth:

Next, we need TM or WM. We can’t have TM on this question, since T is last. We need WM. This modifies our remaining rule:

Every variable is after U. So U has to be first. A is CORRECT.