# The Grey Labyrinth is a collection of puzzles, riddles, mind games, paradoxes and other intellectually challenging diversions. Related topics: puzzle games, logic puzzles, lateral thinking puzzles, philosophy, mind benders, brain teasers, word problems, conundrums, 3d puzzles, spatial reasoning, intelligence tests, mathematical diversions, paradoxes, physics problems, reasoning, math, science.

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groza528
Posted: Tue May 11, 2010 8:01 pm    Post subject: 1

Sorry! I have been in the middle of a big move lately; this has been on my list of things to do! Expect a new puzzle this week!
Oscar
Posted: Tue May 11, 2010 7:42 pm    Post subject: 0

*knocks gently at cobwebbed window*

Hello - is there anybody there?
Oscar
Posted: Mon Feb 15, 2010 9:59 am    Post subject: -1

Spoiler:
The flow-rates out of each tank will be proportional to the cross-sectional area of each outflow pipe, so for the cold water tank the 1 sq in copper pipe will flow at one of one third, one quarter or one fifth of 60, depending on the gauge of the steel outflow pipe. Thus the copper pipe will flow at 20, 15 or 12 gal/min. The same applies to the hot water tank outflow.
Thus the inflow to the tank mixed directly from the hot and cold water tanks: must be one of 40, 35, 30, 27 or 24. We also know that the temperature of that tank is less than the average of the hot and cold water tanks, so the cold water flow rate is greater, so cold water inflow is 20 or 15, while hot water inflow is 15 or 12, so total inflow is one of 35, 32 or 27. We also know the outflow must be divisible by 3, since there are 3 1 sq in pipes, so the flow rates are 15 from the cold tank and 12 from the hot.
Using similar logic we can calculate the flow rates throughout the system and notice that the flow rates at the outlets all lie between 1 and 26.
If we substitute A=1, B=2 etc and arrange the letters in ascending order of temperature we get the word IRRIGATION.

Wow, groza, that must have taken a lot of fine-tuning to set up!
groza528
Posted: Sun Feb 14, 2010 1:07 am    Post subject: -2

So is this solved then? Somebody want to post an answer?
Logain
Posted: Wed Jan 20, 2010 7:14 pm    Post subject: -3

In my case I just missed the first two episodes

Still I guess I should've realized it was meant to tie into the previous ones. I just didn't have any free time back when the others were posted.
Oscar
Posted: Wed Jan 20, 2010 6:34 pm    Post subject: -4

That's the kind of misunderstanding that happens when you watch a recording of the 3rd episode 3 months after you watched the 2nd!
grz*
Posted: Wed Jan 20, 2010 5:53 pm    Post subject: -5

The missing word from the intro is actually meant to tie this puzzle to the last one; the solution to Close The Gates is what you are purchasing at the shop.
The solution to *this* puzzle fillis in the blank in Skinny's note. It does not relate to Odysseus; it's there to continue the story into the next puzzle.
Logain
Posted: Wed Jan 20, 2010 4:22 pm    Post subject: -6

Oscar, while I'm not sure either but after googling, the word could be in reference to the story of his son Telemachus as an infant, which would make the item in question a "plough" But that's just a guess.
Oscar
Posted: Tue Jan 19, 2010 2:42 pm    Post subject: -7

OK, I have the missing word from the intro but I don't see how it relates to Odysseus in any way...
JDTAY
Posted: Sun Jan 17, 2010 8:34 pm    Post subject: -8

Damnit, this forum won't let me create my Breakwater Logic - Not Adequate For Real Life Situations thread either. Oh well.

Anyway, Breakwater logic is not adequate for real life situations because, how are we supposed to build any subways with all those pipes around? Srsly.
groza528
Posted: Sun Jan 17, 2010 4:40 pm    Post subject: -9