# Valve graffiti - riddle

My first is the most common
My second is another $\pi$
My third represents Iceland
My fourth is indefinite
My fifth is potassium hydroxide

Where can you find my whole? And why?

This is an old meme: The cake is a lie.

My first is the most common word of the English language, which is "the".

My second is another pi(e), which is something like a pie, or a "cake".

My third represents Iceland by being the ISO 3166-1 alpha2 country code for it: "is".

My fourth is the indefinite article "a".

My fifth is potassium hydroxide, also known as "lye". Slightly different spelling, but they're pronounced the same, which I think is good enough.

My whole is a piece of graffiti found in the game Portal, by Valve.

• Okay, yeah, this answer is definitely way better (by which I mean "obviously correct"). Jun 10, 2015 at 5:49
• I admit I was wondering when I first saw the puzzle whether the title was a reference to that Valve. Jun 10, 2015 at 5:54
• Huh! That ISO3166-1 list is interesting. I wonder if there are any other puzzles here that reference it. Jun 10, 2015 at 13:02
• @BaileyM: I wouldn't be surprised ISO 3166-1 is the standard used to define top-level domains for countries.
– user88
Jun 10, 2015 at 16:45
• That wouldn't surprise me, either. The two letter codes are so unassuming, I also wouldn't be surprised if somewhere someone used them as a step in a cryptogram. Jun 10, 2015 at 17:10

Okay here goes.

I'm going out of order because this riddle comes with the "liars" tag, so I'm guessing the teller is lying about first second etc.

My fifth is potassium hydroxide - KOH (abbrev. for potassium hydroxide)
My second is an other π - TAO (Tau is often argued as being a "better" pi. I know I misspelled it, bear with me)
My third represent Iceland - ISL (The 3-letter abbreviation for Iceland)
My fourth is indefinite - AN ("an" is an indefinite article in English grammar)
My first is the most common - D (I'm not sure on this one, but Vitamin D is the most common vitamin deficiency in the world. Which fits with the whole phrase, which is...

KOH TAO ISLAND

• Nope, that's not it. I'm typing up the solution as we speak.
– user88
Jun 10, 2015 at 5:43
• Haha your answer better be close, because otherwise this is a pretty crazy coincidence! Jun 10, 2015 at 5:44
• I'll be honest, I sort of saw it about 10 seconds after I read the riddle description. I just got lucky. :P
– user88
Jun 10, 2015 at 5:47
• So the "liars" tag was just a clue after all!? This is nevertheless a nice creative answer! Jun 10, 2015 at 10:08
• I think I like this better than the correct answer. Jun 10, 2015 at 20:24