Mimi - Ch. 11 - Two Guards Riddle.

[MangaDex]

 

[Jack1996]

 

[Exodus007]

What about the expiration date?

 

[Kartonrealista]

This could be read as guy 2 crying because he's happy and guy 1 is a liar or guy 1 tells the truth and guy 2 is devastated

 

[PtoH]

Mimi used doxxing
It's super effective!

 

[ShadowSilence]

I pray that my subconscious mind recalls this tactic the next time I encounter the 2 guard problem in D&D

 

[acidulous]

If anyone is interested about this scenario, it is solvable with discrete maths (propositional logic). The correct answer is to ask "what would the other guard say is the right door?" and then pick the opposite door. The reason for this is that one will lie about the truth whereas the other will truthfully tell a lie.

 

[Daviot]

If anyone is interested about this scenario, it is solvable with discrete maths (propositional logic). The correct answer is to ask "what would the other guard say is the right door?" and then pick the opposite door. The reason for this is that one will lie about the truth whereas the other will truthfully tell a lie.

The whole class of logic puzzles are sometimes known as "Knights and Knaves", and was originally made up by a mathematician, and thus traditional "correct" answers delve into abstract/Boolean logic, matrices, and enough double negatives that any non-mathematician guard would likely be confused by the "correct" answer.

But I am an engineer; I don't care that it's apparently heretical to ask physical or practical questions. You know, things that could solve the simple form of the puzzle unambiguously, (even if limited to yes/no questions) such as, "Is the sky blue?", "Am I holding up three fingers?", or "Am I a tree frog?".

 

[Entryhazard]

The whole class of logic puzzles are sometimes known as "Knights and Knaves", and was originally made up by a mathematician, and thus traditional "correct" answers delve into abstract/Boolean logic, matrices, and enough double negatives that any non-mathematician guard would likely be confused by the "correct" answer.

But I am an engineer; I don't care that it's apparently heretical to ask physical or practical questions. You know, things that could solve the simple form of the puzzle unambiguously, (even if limited to yes/no questions) such as, "Is the sky blue?", "Am I holding up three fingers?", or "Am I a tree frog?".

well making questions that determine which guard is the lying one is trivial, but then you have used up your question and can't ask about which door is the correct one

 

[Daviot]

well making questions that determine which guard is the lying one is trivial, but then you have used up your question and can't ask about which door is the correct one

The most familiar format allows you to ask each guard one question; it doesn't necessarily have to be the same question. If it does, then honestly, you've picked your route poorly.

 

[Entryhazard]

The most familiar format allows you to ask each guard one question; it doesn't necessarily have to be the same question. If it does, then honestly, you've picked your route poorly.

but then it's not a riddle or puzzle at all

 

[Sheza]

but then it's not a riddle or puzzle at all

can you just ask one guard "am i alive" and if they say yes theyre telling the truth and if they say no theyre lying?

 

[AzrefReza]

The most familiar format allows you to ask each guard one question; it doesn't necessarily have to be the same question. If it does, then honestly, you've picked your route poorly.

No, the most familiar format only lets you ask one single question to both guards. Precisely because if you can ask two questions, then there’s no challenge, as is obvious to anyone with an IQ above room temperature.