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Definite Human/Enemy Logic Puzzles

By Rosemagwin

SPOILER FREE. A bunch of logic puzzles I've run into while playing that were so obtuse I broke my brain solving them. Try some out yourself and perhaps pick up a few tricks to give yourself an edge in future loops.

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Rosemagwin
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Category: Walkthroughs

Languages: English

Posted

Updated

20 Sep, 2023 @ 1:15pm

8 Mar @ 1:13pm

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Guide Index

Overview

This Guide

General Hints

Puzzle 1

Puzzle 2

Puzzle 3

Puzzle 4

Puzzle 5

Puzzle 6

Puzzle 7

Puzzle 8

Puzzle 9

Puzzle 10

Puzzle 11

Puzzle 12

Puzzle 13

Puzzle 14

Puzzle 15 - Non-Default Setup

Impossible Definite Enemy

Thanks for Reading

Comments

This Guide

This is a collection of obtuse logic puzzles surrounding the Definite Human/Enemy mechanic I've ran into while playing. I left solutions for all of them, and I hope they might give you insight in the weird situations this game can throw you into.

These puzzles are played with the game's default settings (15 players, 3 Gnosia, all roles), unless specified.
They're also ordered in terms of complexity, least to most complex. The more mental hoops you have to jump through to get the solution, the more complex I determine a puzzle to be.

These are my other guides:

General Hints

Some hints and refreshers in case you get stuck:

No two Gnosia will ever claim the same role. If one Gnosia is already pretending to be Engineer, another won't come forward. This is why there's at most ever two Gnosia faking a role, no matter how many Gnosia are present in that current round.
Definite Human means that this person can no longer be Gnosia or a Bug when Definite Human has been determined via Engineer reports. They are guaranteed Human. They can however, still be an AC Follower.
Definite Enemy means that this person is a liar. Sometimes it can also be determined what exact role they are, which characters have different lines for.
Only an AC Follower can be both determined a Definite Human and a Definite Enemy in a round.
The Bug can never be a Definite Human while alive, only while dead or frozen can they be confirmed to have not been Gnosia.
There's only a possibility a Bug died when any Engineer checked someone who died overnight.
If the Engineer checks the Bug on the night they are eliminated by Gnosia, the Bug will still die, resulting in a double disappearance.
In a round where there's only Gnosia and no AC Follower or Bug, whenever someone with a role dies, the other person who also claimed that role is automatically determined as Gnosia.
If an Engineer dies and it was the last Engineer to be alive, they can never have been the Bug.
When 3 people come forward for either role, the Bug and AC Follower are guaranteed to be among claimed roles.
When 4 people come forward for any role, the Bug and AC Follower are guaranteed to be among the claimed role. If in this case two other people come forward for the remaining role, it's guaranteed to have the real role and a Gnosia player.
The previous two situations still work if the roles came forward later than the first day, as the real roles still have to be among them.

Puzzle 1

It's the third day, all roles came forward on the first day. There is someone who can be determined as a Definite Human. Who is it?

It's SQ. An easy thing to forget is that someone can be determined as both Definite Human and Definite Enemy without problems. This person is the AC Follower. Because the Engineer came forward on the first day, the real Engineer has to be among them. I've determined SQ to be Human, which means we know for sure that she is the AC Follower, as they can no longer be the Bug. But simply us knowing she is the AC Follower is not enough to call out a Definite Human.

The reason she is confirmed Human is because of the other possible scenario. What if I wasn't the real Engineer? Then I couldn't technically lie about SQ's Human status, because if I was Gnosia or another liar, she'd automatically be the real Engineer. Therefore, she is a Definite Human (But also not cleared from being a Definite Enemy).

Puzzle 2

It's the fifth day. All roles come out on the first day. In the first night there was a double death, which killed both Otome and Remnan. Sha-Ming checked out Remnan, which proofed Sha-Ming to be the real Engineer and exposed Raqio as a liar. Currently I have the option to call out someone as a Definite Enemy. Who is the Definite Enemy in this situation?

The situation seems weird at a glance, because there's nobody that can be determined as Gnosia. The options for Gnosia are Chipie, Shigemichi and Yuriko and there might still be two Gnosia alive. The logical mistake I feel that is easy to make is thinking the Definite Enemy is among those three. It's however not the case.

The problem lies with the Doctors and Sha-Ming's observations. Sha-Ming has eliminated the Bug, which means that the only liars left in the game are the Gnosia and the AC Follower. Sha-Ming has also determined both Comet and Jonas to be Human. These observations proof Raqio's identity. The Bug is dead, and the AC Follower must be among the Doctors, as Sha-Ming has found no Gnosia among them. This must mean that the Engineer who was lying must have been Gnosia. Comet reported Raqio as Gnosia, whereas Jonas did not. Therefore, Jonas is the AC Follower and a Definite Enemy. It also proofs Comet is the real Doctor.

Puzzle 3

It's the third day, all roles came forward on the first day. Otome has just declared me as the real Engineer. How did she get to that conclusion?

The logic error arises between Kukrushka's and Shigemichi's report. Kukrushka says Jonas is Gnosia, which means that Shigemichi has to be the real Doctor. This is only true because Doctor came forward on the first day. Next day Shigemichi gives his report and says Jonas is Human. It invalidates Kukrushka's claim of Jonas is Gnosia and therefore makes her a guaranteed enemy. And because only two Engineers came forward, it makes me the real Engineer. But that's technically not enough to be 100% cleared, because what if Jonas was the real Doctor? Jonas could be Doctor and Shigemichi a Bug or AC Follower. However, the real Doctor HAS to be present because they all came forward on the first day. If Shigemichi is lying, Jonas still has to be Human and the real Doctor, therefore invalidating Kukrushka's claims. Only if Shigemichi had falsely claimed Jonas to be Gnosia, there would have been no problem for Kukrushka.

So if Kukrushka was right, Shigemichi would be a real Doctor and by contradicting her, it makes her a guaranteed Enemy and therefore by my investigation Gnosia.
If Shigemichi was lying, it doesn't matter still, because if he is, Jonas must be the real Doctor, again invalidating Kukrushka's claim and making her a guaranteed Enemy.

Puzzle 4

It's the fourth day, all roles came forward on the first day. Sha-Ming reported Stella to be human, Setsu reported Remnan to be human. Shigemichi claims that Comet who was frozen last night is human. Someone can be called out as Definite Human. Who is it?

It's Stella. The situation is a bit unusual, as she is cleared only by implication.

Sha-Ming and Setsu both claim she's human. But for it to be definite, Comet would need to also clear her. However, she has already done so indirectly. If you look at the spread of roles, two Gnosia are among the claimed roles. That means one of them is among crew. Comet has said that Remnan is Gnosia, which means she implicates all other crew to be human. Therefore, indirectly Comet also claims Stella to be human. With all three Engineer's claiming her to be human, she is the Definite Human in this situation.

Puzzle 5

It's the fourth day, all roles came forward on the first day. Both Engineers checked Yuriko last night and determined her to be Gnosia. Jonas checked Setsu who was frozen the night before and determined them to also be Gnosia. Currently, I can call out both a Definite Enemy and Definite Human. Which of them can be called out?

The easy one is Yuriko as Definite Enemy. The real Engineer is either Raqio or Otome, as they both came forward on the first day. Since they both called out Yuriko to be Gnosia, she has to be Gnosia.

The other one is less obvious. In this case the Definite Human is Chipie. We effectively are dealing with two sets of Engineers and Doctors who can be paired off in a potential real group. It's either Otome and Setsu as the real set, or Raqio and Jonas. Otome has found 3 Gnosia of whom none have been frozen yet. Setsu has not found any Gnosia while she was still in the game and therefore backs this up. Raqio has only called out Yuriko, and Jonas has determined two Gnosia among the frozen, and they are therefore another group of potential real roles.

If Otome and Setsu are real, then all Gnosia have been determined and everyone else is immediately considered a Definite Human. This includes Chipie.

In the second scenario, Chipie is the only character that was determined Human by Raqio. Because Chipie is considered Definite Humans in both options, Chipie can be determined to be a Definite Human.

Puzzle 6

It's the fourth day. Guard Duty and Engineer came out on the first day, Doctor on the second. Raqio gets frozen on the first day. In the first night Yuriko and Remnan died, which meant that Chipie was identified as the real Engineer and Yuriko as the Bug. We've frozen Shigemichi and Kukrushka, and last night Stella died. On this fourth day I can call someone out as a Definite Enemy. Who is it?

The truth shows when you look at how the roles are spread, how Doctor getting out on the second day affects things, and the status of the Bug.

The Bug (Yuriko) died alongside Remnan, and Raqio got frozen the day before. The Doctors come forward and both identify Raqio as Human. Normally at this point you can't determine whether the real Doctor is even among them, but this case is different. The Bug has died during the night and did not come forward as any role. This leaves 4 liars total in the game, 3 Gnosia and possibly an AC Follower. But it's already been determined the AC Follower is still in the game. In this game, no two Gnosia ever claim the same role. Because three people claimed Engineer on the first day, one is the real Engineer (Chipie in this case), one is a Gnosia and one must be the AC Follower. That leaves us two Gnosia who have not yet claimed a role and could possibly lie. Two people come forward as Doctor. These can't both be Gnosia, and because there's no other liars available, one of them must be the real Doctor. This also proofs that Remnan wouldn't have had a role. (To the rest this could have been Guardian Angel still, but that's us, so that's ruled out.)

So where does that leave us on the fourth day? Stella, one of the Doctors, has died. We've just determined that one of the Doctors must have been real and the other Gnosia. Stella dying proofs that the other Doctor (Comet) must be Gnosia. Therefore, the Definite Enemy in this situation is Comet.

This also proofs Shigemichi was the AC Follower and Kukrushka as Gnosia, based on the real Doctor's (Stella's) observations.

Puzzle 7

It's the third day. Engineer and Doctor came forward on the first day, Guard Duty on the second. First Raqio and then Remnan got frozen, the first night had no disappearance, Otome disappeared overnight. Someone can be called out as a Definite Human, who is it?

It's Sha-Ming. It's a bit of an odd one, but it's because of Comet's and Setsu's observations, followed by the combined observations of Kukrushka and Otome that clear him.

First of all, let's determine the spread of enemies. There's 3 claims for each role, which means two Gnosia among each, plus the Bug and AC Follower for either one. This leaves one Gnosia among the rest of the crew.

Let's argue Comet is the real Doctor. Comet argues Remnan was Gnosia. Remnan didn't have a role, so this would mean one Gnosia down, the other two are guaranteed to be among, this would make any other crew technically Definite Humans. Obviously, this is not going to be enough.

If Comet is the real Doctor, this would make Setsu a fake, as they point out another crewmember to be Gnosia. So let's reverse the situation, Setsu is the real Engineer and Comet is a fake Doctor. This would mean Shigemichi is the crewmember that would be Gnosia. Again, this would make the rest of the crew Definite Human. Because there's still too many roles uncertain, just these two scenario's are not enough to determine Definite Humans, cause Comet and Setsu could still both be fakes.

It's Kukrushka's and Otome's observations that ultimately decide Sha-Ming is a Definite Human. Because what if Setsu was indeed a fake? Then either Kukrushka and Otome would be the real Engineer, and they both state Sha-Ming is human, whereas Setsu indirectly implicates Sha-Ming to be Human by calling out Shigemichi to be Gnosia.

So the Definite Human in this situation is Sha-Ming.

Puzzle 8

It's the third day. All roles come forward on the first day. On the first day Stella disappeared and Setsu got frozen, on the second day SQ disappeared and Kukrushka got frozen. Someone can be called out as a Definite Enemy. Who is it?

It's Yuriko. Now us as the Engineer we're already sure of that after identifying Kukrushka as Gnosia and Jonas being the only one to back us on this claim. But that's not enough to be a Definite Enemy claim. What makes this situation interesting is that the spread of roles and Engineer's collective observations heavily implicate Yuriko, apart from her one mistake.

The situation is odd because both Engineers have only observed characters as Gnosia. So let's see both situations. If I'm the real Engineer, Yuriko is most obviously an enemy, as Kukrushka was a real Gnosia and Jonas backed this up, making him the real Doctor. However, what if Raqio was the real Engineer? This would mean Sha-Ming and Remnan are Gnosia. This would leave only one Gnosia among the roles. And there has to be a Gnosia among the roles, as there's three liars among the roles and only two human roles that can lie. Yuriko said that Setsu was Gnosia, who doesn't have a role, therefore Yuriko gets implicated again and therefore is a guaranteed enemy.

Interestingly, it's mostly the observation that Setsu is Gnosia that doomed Yuriko.

Hypothetically, could Yuriko saved herself by stating Kukrushka was Gnosia? As far as I can tell, yes for this round. This would no longer directly implicate her as an enemy. However, because I think she's the AC Follower, she's directly taking a hit for the Gnosia players. Because if Gina now gets frozen, she gets outed as an enemy anyways, because the game still continues. (This would be one of the best moments to use Don't Vote on Yuriko.)

Puzzle 9

It's the sixth day, Engineer came forward on the first day, Doctor on the second. Chipie was frozen the day before and Sha-Ming died last night. Someone can be called out as a Definite Enemy. Who is it?

It's Otome. It partially has to do with the spread of roles, and how both me and Yuriko basically set her up for failure.

The problem arises from both me and Yuriko calling out Chipie as Gnosia. The situation for Chipie becomes as follows: he's is either Gnosia and the real Engineer is among Yuriko and me, or he's the real Engineer and he's being shafted. On top of that, if he is Gnosia, neither me or Yuriko can be the Bug, because we checked each other and observed eachother to be Human. And as an added bonus, both me and Yuriko also observed Otome to be Gnosia.

The problem for Otome arises from the fact on how late we are in the game, and Yuriko and me calling out Chipie and Otome as Gnosia. If Yuriko or me are the real deal, they are both by default Gnosia, no question about it.

However, lets argue Chipie is actually the real Engineer. Then Otome cannot be the Bug for starters, cause she was observed by him. Then she would either be the AC Follower or the real Doctor. This would make Yuriko Gnosia and me a Bug. Seeing as this is the only option for a truth wherein Otome would not be in trouble, and it is in direct contradiction with us not being the Bug, we ourselves can already conclude that Otome is an enemy.

However, because there's only six people left in the game, and Otome has not called anyone out as Gnosia, she had to call out Chipie as Gnosia, because otherwise the Gnosia would have already won by now. This means that no matter what she would have said Chipie's identity was, the incredibly messed up observations by me and Yuriko incriminated her.

Puzzle 10

It's the third day. All roles came forward on the first day. This mornings reports are displayed on the image. Currently, I have options to call out people as Definite Enemy and Definite Human. Who can be called out?

This was a rough one to figure out, especially considering that I was also considered a Definite Enemy. How did I mess up? Quite simple, it was my callouts on Gnosia. Because all roles came forward on the first day, we know at least 1 Gnosia has to be among the Engineers, and possibly one with the Doctors.

I took a risk by calling out Comet as Gnosia. She gets frozen and Jonas states she's Human. We're in direct contradiction with eachother, so one of us has to be a liar. The problem becomes worse as I've also called out Remnan as Gnosia. This means that if I would have been the real Engineer, I would have tracked down two Gnosia and the last one would either have to be Stella or Setsu.

However, if I said that Comet was Gnosia, Jonas would have to be the real Doctor. He says Comet is Human, therefore outing me as a liar.

From there on, we can determine that either Setsu or Stella is the real Engineer. Because they both inspected Chipie, he is a Definite Enemy and Gnosia. Again, something that would have been at odds with my observations.

Lastly, Setsu is also Definite Human, because Stella checked her. She's either the real Engineer, or the AC Follower.

So two Definite Enemies, me and Chipie, and Setsu as a Definite Human.

Puzzle 11

It's the fourth day. All roles came forward on the first day. Last night Comet disappeared. I investigated Remnan to be Human, SQ says I am Human. Chipie was frozen last night and both Doctor's claims he was Human. There's two characters that can be determined to be Definite Human. Who are they?

The first Definite Human is one I can't call out, because it is myself. Because Engineer came forward on the first day, and SQ observed me to be Human, I'm either the real Engineer and SQ is lying, or SQ is the real Engineer and I am tehrefore the AC Follower.

The second character is a bit harder to determine. It's often best to look at character's whose status got updated overnight and see what's up. In this case it is Remnan, I observed him to be Human. And he also turns out to be the Definite Human in this case. If I'm the real Engineer, it's obvious he would then be Human. But what if SQ were the real Engineer? We can deduce she would determine him to be Human.

First of all, she has claimed Gina is Gnosia. Because Doctor came forward on the first day, this would imply either Otome or Chipie is the real Doctor. SQ has determined two characters to be Gnosia, Gina as the Doctor, and Raqio. This means Otome can't be the real Doctor if SQ is the real Engineer, because Otome has determined two different characters to be Gnosia. By implication, Chipie would then be the real Doctor. He has determined Jonas to be Gnosia. This means that, if SQ and Chipie are indeed the real roles, Gina, Raqio and Jonas would be our Gnosia. Therefore, every other character is implied to be a Definite Human by SQ. If I would have checked any of the other characters, they too can be determined as Definite Human.

Puzzle 12

It's the fourth day. Engineer and Doctor came forward on the first day, Guard Duty on the second. Due to this, Kukrushka has already been determined a Definite Enemy. Yesterday Setsu was frozen and determined by the remaining Doctors to be human. Today both Yuriko and Kukrushka investigated Gina. Yuriko claims she's Gnosia, Kukrushka claims she's human. I can currently call someone out as a Definite Enemy. Who is it?

It's Gina. What makes this situation interesting however is that we can't call out Yuriko to be a Definite Human. (I do actually know she's the real Engineer, because I caught Shigemichi lying, but that doesn't affect Definite Human/Enemy determinations.) Let's first look at the roles, 3 people claim each role. Which means two Gnosia pretending to be Engineer and Doctor, and then AC Follower and Bug pretending to be either Engineer or Doctor.

Crucial in this scenario are the identities of Stella, Shigemichi and Setsu, who are all investigations of the Doctors. That leaves us with two possible scenarios, all in which Gina gets implicated due to Shigemichi's identity.

Setsu is confirmed Human due to Gina and Comet both clearing them. Which means it's guaranteed the Gnosia player is still among the living Doctors.

The first scenario is where Setsu is a fake Doctor. One of the Doctors then has to be real, which means the identity of Shigemichi will determine who is lying. If Shigemichi is human, either through being the real Engineer or AC Follower or Bug, it means Kukrushka is for sure a liar and Yuriko could be potentially. Because Gina states Shigemichi to be Gnosia in this scenario, she's automatically a liar. But what if Shigemichi was Gnosia? Then either Kukrushka or Yuriko has to be the real Engineer. Because Kukrushka was already outed as a Definite Enemy, Yuriko is the real Engineer in this situation. And because Yuriko has just determined Gina to be Gnosia, she would again be a Definite Enemy.

The second scenario is one in which Setsu is the real Doctor. This would implicate both Comet and Gina as liars due to the fact they both reported Stella as Gnosia, whereas Setsu reported her as Human. But Shigemichi's identity would again determine Gina to be the Definite liar, because she would be in direct contradiction with Setsu's claim. Only in this case Comet could technically also be suspect, but cannot be determined to be a Definite Enemy, because she wouldn't be one in the previous scenario.

So yes, it's Gina. And interestingly without making Yuriko a Definite Human.

Puzzle 13

It's the third day. Doctor came forward on the second day, Engineer just came forward. Last night Kukrushka disappeared. Someone can be called out as a Definite Enemy. Who is it?

This one is a rough one to deduce, as all Engineers just came forward with their results, so there's many possible avenues to explore. The Definite Enemy does turn out to be one of the Engineers.

First things first, we can determine that Doctor and Engineer coming forward on a later day is not an issue. Both roles had three people come forward. This would allow for a total of four liars, as Gnosia don't claim the same role falsely twice. There's either the Bug or AC follower amongst the roles, and a Gnosia amongst each role. This also means that both Remnan and Setsu, who were frozen earlier, must be Human. Which according to the Doctors is the case.

We can also rule out Bug as the role for Kukrushka. None of the Engineers checked her and she died, meaning she was either the real Doctor, or the AC Follower. Kukrushka's possible identities are crucial. What if she's the real Doctor? And what if she's the AC Follower?

If Kukrushka is the AC follower, this would mean the Bug must be among the Engineers, as well as one other Gnosia and the real Engineer. Yuriko checked another Engineer, Stella. She says Stella is Human. This cannot be possible. If she was the real Engineer, checking Stella would have killed her, as Stella would have been the Bug. Therefore, Yuriko can be determined to be a Definite Enemy in this scenario.

If Kukrushka is the real Doctor, there would be another issue without Yuriko's observations. If Kukrushka is real, then there's still two Human liars among the roles, one in each category. This makes it impossible for Yuriko to discover two Humans amongst both roles without killing the Bug. As Yuriko is an obvious liar in both realities regarding Kukrushka's identity, Yuriko is the Definite Enemy in this scenario.

(I do find it impressive that the game would just roll the Engineer results in such a way that Yuriko can immediately be determined a liar, because as far as I'm aware, calling out Stella and/or Shigemichi as Gnosia would have cleared her.)

Puzzle 14

It's the fifth day. All roles came forward on the first day. People have been frozen in this order: Gina, Shigemichi, Remnan and Comet. People have disappeared in this order: Yuriko, Stella, no Disappearance and Jonas. Kukrushka has just investigated Chipie and found him to be Human, SQ checked Comet and determined she was Human. Someone can be called out as Definite Enemy. Who is it?

It's Kukrushka. Now for us specifically it would make an easy educated guess. She checked us and we didn't die, so obviously she's either AC Follower or Gnosia. But this obviously does not make her a Definite Enemy, so let's check how we can proof she's a Definite Enemy.

First, let's check the role spread. Both roles came forward on the first day, two for each. This makes things more difficult, as straight up all Gnosia players could be among the normal crew. But what we can determine is that there's a real role in each category and one liar.

One thing that can already help us whittle down Kukrushka's identity is the death of Stella. Because she died and Kukrushka didn't check her, Stella has to be a Definite Human and not a Bug. This might mean she could still be an AC Follower. Important is that Stella is not Gnosia beyond a shadow of doubt.

That still means we have three Gnosia unaccounted for. The identities of the Doctors are now important. Who is real, Remnan or SQ? Hypothetically, let's say SQ is the real Doctor. Then obviously Kukrushka's statement that Comet is Gnosia gets contradicted by SQs statement that Comet is Human.

If SQ is not the real Doctor, she has to be AC Follower by Kukrushka's logic. According to Kukrushka SQ is Human and therefore also can't be a Bug. Which means Remnan is automatically the real Doctor. Incidentally, Remnan also can't be Bug, for he is either Gnosia as determined by real Doctor SQ, or real Doctor by implicated AC Follower SQ.

So there's two hypothetical situations on our hand, dependant on the real Doctor. First lets theorize SQ is real. We have two Gnosia frozen, and one on the loose, and still missing wherabouts on the Bug and AC Follower. Kukrushka is in direct contradiction with the then real Doctor SQ, making her a Definite Enemy.

So let's hypothesise Remnan is the real Doctor. SQ then has to be AC Follower. We have one frozen Gnosia, that being Comet by Kukrushka's observation, with two Gnosia on the loose. Then we're still missing the Bug and two Gnosia. But there lies the problem. Stella died. Which means she's not Gnosia. And she cannot be the Bug as stated earlier. And she cannot be the AC Follower, because that has to be SQ in this situation. That means she has to be the real Engineer and Kukrushka is again a liar.

So after many twists and turns, Kukrushka gets implicated.

Puzzle 15 - Non-Default Setup

This game's setup was played with 15 players, 6 Gnosia, all roles.

It's the fifth day. All roles came forward on the first day. People got frozen in this order: Stella, Shigemichi, Raqio, Setsu. Characters got eliminated in this order: SQ, Jonas, Gina, Otome. Every night someone died and every day someone got frozen. Yuriko just called someone out as a Definite Enemy. Who is it?

It's Remnan. And up until this point, he was in the clear, so well that I even thought he was the real Doctor. He even correctly identified everyone that was frozen on complete accident. Then how did this happen?

The issue lies with the status of all people who claimed a role. Remnan is the only one still alive. Because three people came forward for both Engineer and Doctor, we can confirm that both the AC Follower and the Bug are within the claimed roles. That means that for every role there's the real role, a Gnosia player and either the AC Follower or Bug.

So let's start determining some things. There's two Definite Humans among the Engineers, Gina and Jonas. We can determine this to be true because they both died. This means Shigemichi is determined Gnosia by process of elimination.

That leaves us with Doctor. Raqio is also confirmed a liar, though not immediately confirmed as Gnosia. This is simply because they called out Shigemichi as Human, which is impossible. So the final question becomes, who is the real Doctor, Remnan or SQ? This can only be determined due to the timing of SQ dying, the Engineer's reports and the existence of the Bug.

We can't determine whether SQ or Remnan is the real Doctor due to the existence of the Bug. There's not been a double death, so there might still be a situation where the Bug was killed by the Engineer in a night where they were also a target of Gnosia. The Engineer's however never checked the Bug, and we can confirm this.

First off, the Bug must be within the claimed roles. It cannot be SQ, she was the first to die and all Engineers were still in the game. None of them had checked her. It can't be Jonas, because he wasn't checked by Gina or Shigemichi. It can't be Shigemichi, because he is Gnosia, although that was determined later. It can't be Gina, because she died as the last existing Engineer. From this point onwards the Bug cannot die anymore. Raqio was frozen and Remnan said they were Gnosia. If that were true, where did the Bug go? Exactly, it must be Remnan. If he'd called out Raqio to be Human, he would've still been in trouble, because that would implicate him to either be the Gnosia player or a liar. No matter what Remnan would have said, his identity as a Bug would have come to light.

So yes, it's Remnan, despite him playing a perfect pretend game as the Bug.

Impossible Definite Enemy

There's one situation with default settings that never triggers a Definite Enemy check, even though it logically can be determined to be a Definite Enemy. If four people come forward as for example the Doctor and two as the Engineer, it means the AC Follower and Bug are among the Doctors, and that leaves a Gnosia among the Engineers. If the real Engineer dies in this situation, logically the other person is a Definite Enemy. Yet for some reason, you cannot call out a Definite Enemy, even though it really is the case.

I'm not sure if it's a bug or intended behaviour. I had this situation in a game and I could not call out Definite Enemy, even though I know for sure the other Engineer to be Gnosia.

Thanks for Reading

Thank you for reading my guide, hopefully it helps!

These are my other guides:

8 Comments

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Rosemagwin [author] 15 Aug @ 10:31am

@epicpeachtime
Okay, I think I know why, it's indeed by implication, so 4 lying roles, of which 3 Gnosia and one AC. At least one guaranteed Gnosia among the doctors (due to no Bug). This means one of the Engineers has to be Gnosia too. Which means one Gnosia unaccounted for.

Raqio reports Gina as human, which means if Raqio is the real Engineer, she's automatically in the clear.

Player reports Remnan as Gnosia, which implies Raqio to be Gnosia and the other one has to be among the Doctors. Therefore, all other crew members are then implied Definite Humans. That means Gina is cleared in both possibilities and is therefore cleared by implication.

epicpeachtime 14 Aug @ 2:51pm

This is a really nice post that walks you through certain logic puzzles. And I stumbled into one I don't fully get while playing (though I might just be a little dumb tbh)

Set Up: 15 Crew. 1 Engineer, 1 Doctor, 1 GA, Guard Duty, 3 Gnosia, 1 AC Follow, No Bug

Day 1: 2 Engineers (Player, Raqio) reveal
3 Doctors (Stella, Sha-Ming, Yuriko) reveal
Guard Duty (SQ, Comet) reveals
Yuriko is voted out, and SQ is killed during the night

Day 2: Player reports Sha-Ming as Human
Raqio reports Gina as Human
Stella and Sha-Ming both report Yuriko as Gnosia
Raqio is voted out, and Otome is killed during the night

Day 3: Player reports Remnan as Gnosia
Stella reports Raqio as Gnosia
Sha-Ming reports Raqio as Human

Definite Human can be used on Gina. Why is that? Is this similar to Puzzle 7, where she's cleared by implication?

Rosemagwin [author] 5 Jul @ 4:40am

Gnosia conveniently wraps the convincing part up in the button that does Definite Human/Enemy

frashm 4 Jul @ 5:21pm

Good luck convincing your pals of any of this btw.

幼蟲的紫大人 4 Feb, 2024 @ 3:18am

These are very cool

Shazzner 28 Jan, 2024 @ 2:08am

This was a great guide, I loved it. Honestly I could read way more logic puzzles like this.

Rosemagwin [author] 25 Nov, 2023 @ 1:53am

But it literally never takes it into consideration in the other examples, plus characters even have specific lines if you deduce a specific role.

Pressiepop 24 Nov, 2023 @ 8:01pm

In your "Impossible Definite Enemy" scenario, it's because of the player. The player can claim Doctor regardless if their Gnosia ally claimed Doctor already, so the game takes that to account. So "technically" there can be two Gnosia Doctors, an AC/Bug, and then two Engineers where one is AC/Bug.

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