Diagram

[dfay91]

I found this game rather difficult and time consuming, although I was eventually able to get all the questions and made up enough time on the other games to compensate. Unfortunately, my diagram was utterly useless; it basically looked like this:

R/P __ __ __ __ __ R/P

/VT/

Unsurprisingly, this didn't help much. I had to draw a hypothetical for almost every drawing--and in the case of question 9, I had to draw five hypos. Which is ridiculously time consuming. What was I missing?

[timmydoeslsat]

You have a fine setup although I do not see the P O/V reversible block rule in there.

Here is my setup:



For #9, it is a local question asking what variables must immediately surround the OS reverisble block if such a block took place. I know that we will either have a situation with P next to V or with P next to O, which will be next to S.

So I draw out both situations.



As we can see, the first situation is not going to work because R has to fill the spot immediately to the right of S due to the at least 2 spaces rule between the other R. Placing R there would force T and V to be beside one another. Get rid of this frame.

We are now only working in the PV idea. R must either be in the 3rd or fourth slot to satisfy the rule.

I frame that idea.



Now we notice that the bottom frame would not work because the OS reversible block must take up slots 5 and 6, which would force T to be beside V. Get rid of this frame.

So we know that the OS block must occupy two of those available three spaces, and we know that space 5 must be dedicated to one of these two variables. The third variable of T must be on one of the ends, either 4 or 6. So we know that what must be immediately beside this pair is the R and T.



Answer choice (D).

[iabney]

Could someone review question #11, please? I guess I'm trying to find the best method to do these sorts of problems in a time efficient manner. I would hate to kill five minutes just to get one answer. Should I skip questions like these, in order to conserve time?

Thanks

[ldagosti]

Would it be possible to frame this game at all? And if so, how?

[matthewyoung2008]

I like the thorough treatment of problem #9

However, given time constraints, I would just brute force it

If you can just immediately come up with any viable solution instead of systematically doing frames and trying to figure out R's placement, you can just observe what straddles OS and move on

[matthewyoung2008]

(11)

You're trying to replace a rule dealing with R, in particular, a rule that says that R must be at least 2 spaces away from R

so in your mind think,

R _ _ R _ _ P, or R _ _ _ R _ P, or R _ _ _ _ R P

well, another way of saying R's have to be at least two apart is

R's have to be no more than two spaces away from P

notice the "inversion" of "at least" --> "no more than"

this should draw your eye to D

(A) feels too narrow; indeed, R could come first, and P last (rule no. 1), so it's out; the new rule cannot contradict an old one that still stands

(B) doesn't have a ring to it, O and V don't look like they help with R's placement

(C) tells us what's between R and R but not how far apart they need to be

(E) doesn't even mention R, so fahgettaboudit

[sahara]

If you use frames for this problem do you stop at PO... and PV... or do you take that further to indicate the two locations where R can be in each of those frames as well? There is no way to easily pick off answers for any of the questions with only the main diagram. It takes too long to complete each question.