Everyone hates rule substitution questions, and this is the second on this section. Ouch.
I actually find rule substitution questions very easy. I’ll try to convince you this is possible. There are two things a substituted rule must do:
- Allow everything allowed by the old rule.
- Ban everything not allowed by the old rule.
This gives you an easy way to eliminate answers. A, B and E add extra restrictions.
- A: This says T is discussed third. That doesn’t normally have to be true. Wrong answer!
- B: This says T is discussed earlier than F. Not a normal restriction. Eliminate!
- E: This says F is discussed third. Normally, F can also go 1st or 2nd. Bad answer!
Have the courage of your convictions. Rule substitution answers are full of silly restrictions. If a restriction contradicts the normal rules, eliminate that answer.
Now we are left with C and D. The second part of my guidelines says that rules have to ban everything that’s normally not allowed.
C doesn’t do this. C says that K and R have to be among the last three. I’m sorry, but K and R have to among the last two. This answer seems too broad. Let’s look at D.
When I did this question, I went right to D because it said O has to be fourth. That’s the most important deduction in the game, and it’s also a consequence of the rule we’re replacing.
Rule substitution answers usually work by describing a consequence of the rule we’re replacing. D does describe a consequence of the rule (O is fourth), so this is very promising. Now let’s see where this leaves us. O is fourth, and we know from rule 3 that N and T have to be before O.
This diagram shows what we’ve deduced so far.
We still have to place F and KR. This answer says that KR are beside each other and reversible. So they need two spaces.
The only two spaces open are 5 and 6. That means KR goes there, and F has to go before O. So this exactly matches our original setup. D is CORRECT.
I didn’t prove this answer with this degree of certainty on the test. I just eliminated A, B and E like I showed you.
Then I discarded C because it said “last three”, and I picked D because it placed O fourth. I did do a quick mental check that the rest of the rule worked, but those were the main elements I used to quickly arrive at the answer.
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