LG Game 2 Diagram, by LSATHacks
These diagrams show the rules used to determine the order of the professors’ lectures (P, S, T, V, W, Y, Z).
Refer to these diagrams when solving this game. Copy them on your own page, and on each question make a new version of them in order to follow along with my explanations. You’ll learn much more if you draw along.
The setup section explains how to build this diagram.
Main Diagram
Rules
Hi, I'm Graeme Blake
Founder of LSAThacks; I scored a 177 on the LSAT.
I created the LSAT Mastery Seminars, which are part of the Ultimate LSAT Prep Bundle
If you like the explanations you're reading I'm 100% confident you'll enjoy the courses. Satisfaction guaranteed.
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Thank you for the explanations Graeme! They are so incrediby helpful.
I have a question on this game – with if and only if conditional rules, doesn’t the arrow/relationship go both ways.
Thanks again!
Oh, you’re right. I actually left off part of the rule. I’m not sure it caused me to make an error on this game. Did any of questions hinge on that? I’m adding this to my list of explanations for major edits, as I’ll have to redraw the diagrams. I probably also can’t draw the combined diagram for the fifth numbered rule.
Hi Graeme,
Thanks for this explanation.
Question: I don’t understand, though, why the rule about V before Z is not combined with the drawing of the sixth rule, but it is incorporated into the sixth rule’s contrapositive drawing. Why is that?
It’s a judgment call. I might have been better off to leave it out of the 6th rule. Here’s what I wrote in the setup page:
“(The V-Z rule fits well on the contrapositive, so I included it as a reminder.)”
https://lsathacks.com/explanations/lsat-preptest-67/logic-games/game-2-setup/
Technically, it would fit on the 5th. However, since Z is after V, then it would clutter up the diagram a bit because you’d have the V beside the P. But V-Z is an ordering rule, and the P1 rule is a sequencing rule.
So that’s why I didn’t put it in rule 5. I did put it in rule 6 because it didn’t confuse me, and served as a reminder of the rule.
Like I said, judgment call. It’s definitely not something you need to improve. Hopefully my laying out the reasoning behind it helps you to decide whether to draw similar rules in similar circumstances.