PT78 - Logic Games
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PT78 - Logic Games

# Game 2 - History project archives

Setup: Base, Variables, Rules
Setup: Splitting into Worlds
There are several options for splitting. We could split based on L in 3 or T in 3. We could also split based on putting R in (which creates the OR block), or putting R out (which would then force T out because of rule 3). Below I’ve shown what happens when you split based on putting R in or out.
If R is in, the OR block must fit in 1 and 2.
If R is out, that means T is also out, which fills up the out group. So that means you know every other letter must be in.
Question 6
Question 7
This question is asking which answer would force Mollie to be in 2. This is different from a question that introduces a new rule (like #8). On those questions, we get a new rule and then are asked what could be true or must be true. Here, the answer choices are each providing a new rule, and our goal is to pick the answer that forces M in 2. We should just evaluate the answers against our worlds.
(A) could happen in the first world, and you can see that M is not in 2 in that world. So (A) is wrong.
The same applies to (B). O is in 1 in the first world, and M is not in 2. For (C), we can see that O can go in 4 in the second world. But putting O in 4 does not force M in 2, since M could also go in 1. (D) is wrong since T in 3 could happen in the first world, which doesn’t force M in 2.
The correct answer is (E), since Y in 1 could only happen in the second world. We may need to draw out what happens next. Once Y is in 1 in the second world, there’s only 1 place left for M in spot 2.
Question 8
Question 9
We can see from the two worlds that O, M and Y could go in 1921.
Question 10
Question 11
We can see from the worlds that R, M, O and Y could all go in 2. So L is the answer.