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Question

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anonymous · Answer

Punch the guard in the nose and open them both!

Really though, I feel like there is information missing, unless it's just a silly answer like "I choose the door with the treasure behind it."

anonymous · Answer

nb i like your solution

anonymous · Answer

no fight, digging holes, or tricks involved. he asked the question, your answer has to indicate the door number

kinggeorge · Answer

"Tell me which door is the correct door" is what you should say. (It's not a question)

anonymous · Answer

you have to indicate the door #

anonymous · Answer

you guys are using the wrong logic. you are supposed to think on how you choose, not by avoiding to choose

anonymous · Answer

you are forced to indicate a specific door
and again, the guard won't tell you anything

anonymous · Answer

We have no information about the two doors, so we have nothing to base a decision about the doors on.

kinggeorge · Answer

"Open that door" and point at door 1. When he opens it, open the other one if there's no treasure.

anonymous · Answer

only the guard can open the door

anonymous · Answer

the question seems funky because it says the guard never lies but you say the guard won't tell you anything

kinggeorge · Answer

Ask someone else to guess before you. If they get the treasure steal it from them. Otherwise choose the other door.

anonymous · Answer

Throw a flashbang, then steal the treasure while the guard is blinded

anonymous · Answer

You can't get treasure from others

anonymous · Answer

are you trolling us? :))

anonymous · Answer

Again, only the guard is able to open the door, no one else can

anonymous · Answer

Use a Vulcan Mind Meld to steal the information of where the treasure is located from the guard's mind, then tell him to open the door

anonymous · Answer

there is actually a way to get it legit

anonymous · Answer

I feel like this is a puzzle that would have resulted from Monty Hall being dyslexic

kinggeorge · Answer

Obviously, we can't choose right away, or the guard lies sometimes. Otherwise we would only have a 50% chance.

anonymous · Answer

The guard never lies. Think about how you choose rather than avoiding to choose

kinggeorge · Answer

We have the hypotheses, "If we assume that the guard never lies and if we were to choose right away, say, door #1, we would only have 50%/50% chance of getting it right."

We also know the guard never lies, and we're told to choose right away, no matter how we choose. Thus, we have a 50% chance.

anonymous · Answer

So, we can ask a question to guard?

anonymous · Answer

You can't ask any question, but he never lies.

anonymous · Answer

can you say "the treasure is behind door #1" and if we're wrong he'll tell you?

anonymous · Answer

Nop, he's not that stupid

asnaseer · Answer

how about "open the door with the treasure behind it"

anonymous · Answer

as if he would

asnaseer · Answer

why not? you said he never lies

anonymous · Answer

he didn't lie, he simply doesn't open it

anonymous · Answer

"If the treasure is behind door #1, bark like a dog. If the treasure is behind door #2, meow like a cat." Then just tell him to open the right one :)

anonymous · Answer

in that case it's like you ask him to bark like a dog. Again, you can't ask him questions

anonymous · Answer

It's not a question, it's a command! Haha

asnaseer · Answer

so you can ONLY respond with "door 1" or "door 2" - is that right?

anonymous · Answer

You are forced to indicate a specific door

anonymous · Answer

"If the treasure is behind door #1, open door #1."

asnaseer · Answer

can you see the treasure? i.e. do the doors have a glass panel of some sort?

anonymous · Answer

Pull out your handy-dandy x-ray gun that you always carry with you, and inspect the treasure rooms

anonymous · Answer

you have no special power. the treasure can't be seen from outside.

asnaseer · Answer

just to clarify:

a) there are two doors
b) one door has treasure behind it (but we cannot see it)
c) there is ONE guard who is guarding BOTH doors
d) you CANNOT ask the guard any questions
e) the guard NEVER lies
f) the guard asks you "which door do you want to open"

and we have to come up with a strategy that GUARANTEES that we get the door with the treasure behind it.

correct?

asnaseer · Answer

I'm asking for clarification because there is variation of this that I know of where there are TWO guards. one guarding each door. one guard always lies and the other always tells the truth.
so I want to ensure that in this puzzle there is only ONE guard.

anonymous · Answer

agreed @nbouscal ;)

anonymous · Answer

whats the answer??