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Posted Feb 7, '13 at 2:40pm

Doombreed

Doombreed

432 posts

"Three gods A, B, and C are called, in some order, 'True',
'False', and 'Random'. True always speaks truly, False always speaks
falsely, but whether Random speaks truly or falsely is a completely random
matter. Your task is to determine the identities of A, B, and C by asking
three yes-no questions; each question must be put to exactly one god. The
gods understand English, but will answer all questions in their own language, in which the words for 'yes' and 'no' are 'da' and 'ja', in some order.
You do not know which word means which."

Ok, I googled it up so I am not going to say anything about the solution. What troubled me, is that the Wikipedia article about this Riddle is titled:

"The Hardest Logic Puzzle Ever".

If you can resist the temptation to open the file, you can google it up as well. It's the first result of google search.

Now the inventor, George Boolos has given three clarifications about it.
Would you like me to post them?

 

Posted Feb 7, '13 at 2:53pm

Doombreed

Doombreed

432 posts

Apparently, thaboss was not bluffing when he said that about his riddle. But I don't expect anyone to solve it unless he has tried it for a week or so.

 

Posted Feb 7, '13 at 4:59pm

MattEmAngel

MattEmAngel

4,541 posts

As I have said before, a riddle always has an answer that is only a few sentences long. This is a RIDDLES thread, not logic puzzle thread. I have been fine with logic puzzles because they've been in story format, but "The Hardest Logic Puzzle Ever" is not appropriate for a Riddles thread.

 

Posted Feb 7, '13 at 6:13pm

Osumnis

Osumnis

325 posts

Can someone please post all of the riddles that are currently unsolved? That would be nice.

 

Posted Feb 7, '13 at 6:24pm

xerox

xerox

311 posts

"Three gods A, B, and C are called, in some order, 'True',
'False', and 'Random'. True always speaks truly, False always speaks
falsely, but whether Random speaks truly or falsely is a completely random
matter. Your task is to determine the identities of A, B, and C by asking
three yes-no questions; each question must be put to exactly one god. The
gods understand English, but will answer all questions in their own language, in which the words for 'yes' and 'no' are 'da' and 'ja', in some order.
You do not know which word means which."

I think i have a something...

The first question i will ask is :

If the god of Truth, point at the God of Lie, will he point you?

The one who says the truth will say : No
The one who says the lie will say : No
The random god will say yes/no

So there is 75% of them saying no.

This will show if ja or da is yes/no

Then i will ask : If i ask something the god of Random will he say yes for sure?

There is 66% chance that after the first question, the god of Random has remained. The truth/lie will say nothing because the cant say for sure yes/no.  The god of Random will say because he alsays says yes/no.

So if they answer, the other one is the god of Random. If the god do answer, then again, we will find the god of Random.

This leaves the last question. If the god of Random is not last, we say yes,no question, that we know the answer. If the god of random is last we ask .. Well i dont know what to ask...

Or i would simply ask the gods : If you say yes, will you tell me who the other gods are in english without a lie?

Then at least one of them will say yes

 

Posted Feb 7, '13 at 8:23pm

thaboss

thaboss

882 posts

thaboss, you have a habit of posting logic puzzles instead of riddles, but I let it go because they are written in riddle form. I think you need to draw a line here, though. Riddles are, as a general rule, solved in one or only a few sentences. From here on out, lets stick with normal riddles or shorter logic puzzles (but only if they're in story format).

I let it go

Since when have you been the curator who decides what gets in or not? It's evident people are interested in these logic puzzles, don't tell thaboss he can't post them. It's his freaking thread, if anything he should make the rules. The idea of the logic puzzles is that they have one clear answer, unlike the vague bull**** that's being posted in here recently (no offense xerox). Does the fact that this is dubbed "The Hardest Logic Puzzle Ever" not give you any sense of challenge, of curiosity? Thaboss probably wouldn't have even posted it if it didn't have that name associated with it! Just because the name of the thread is "riddles" doesn't mean it has to be exactly specific to whatever your definition of a "riddle" is. If it makes you feel any better, thaboss agrees that there will be no more logic puzzles (from him, at least, he won't force other people not to post them if they so wish), like he said, he only posted this one because the thread was getting out of hand and because of the name associated with this certain logic puzzle. So just solve it. Or not. Thaboss doesn't really care. Just everyone please try to get specific riddles and don't post multiple at the same time!

/rant; don't take it personally

@Doombreed: Thaboss will just post the three things himself, it's simpler that way.
1. It could be that some god gets asked more than one question (and hence that some god is not asked any question at all).
2. What the second question is, and to which god it is put, may depend on the answer to the first question. (And of course similarly for the third question.)
3. Whether Random speaks truly or not should be thought of as depending on the flip of a coin hidden in his brain: if the coin comes down heads, he speaks truly; if tails, falsely.

 

Posted Feb 7, '13 at 8:26pm

thaboss

thaboss

882 posts

The riddle can be dropped because the answer is a bit complicated, and like Doombreed said, it'll probably take a while to solve. But don't  tell thaboss what he's "allowed" to post.

 

Posted Feb 7, '13 at 10:14pm

MattEmAngel

MattEmAngel

4,541 posts

-_- I didn't say I was in charge of the thread. I wasn't going to ban you, I was just going to complain.

Does the fact that this is dubbed "The Hardest Logic Puzzle Ever" not give you any sense of challenge, of curiosity?

Yeah, but more like the "yes, i could touch it, but it might kill us" curiosity. Does that make sense? Not really.

Just because the name of the thread is "riddles" doesn't mean it has to be exactly specific to whatever your definition of a "riddle" is.

Riddle, (noun): a...

just kidding. You thought I was going to post the dictionary definition, didn't you? Ha.

 

Posted Feb 7, '13 at 10:15pm

MattEmAngel

MattEmAngel

4,541 posts

Lame riddle to keep the thread going:

Matt (of course) loves the color green. Green green green. He wears a green suit and drives a green sports car. It's parked in his awesome green garage on his awesome country resort. Not surprisingly, Matt also loves gardening. He has many, many flowers in a house outside his green mansion. What color is the house?

 

Posted Feb 8, '13 at 1:21am

dragonball05

dragonball05

1,571 posts

The flowers are being grown inside a greenhouse, so the "color" is transparent. :P

 
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