View Full Version : OT: a quiz, difficult.

19-06-2004, 02:09 PM
Hi there, i was given a challenging task, a quiz. I have drawn a picture to show you.


The rules are... Every house has to have Water (w) Gas (g) electricity (e)

The lines from each cannot cross. You cannot go between the houses (ie from h1 to h2) each has to get water/gas/electric from each commodity.

19-06-2004, 02:20 PM
is this one of those lateral thinking ones?

can we re arrange the houses and commodities?

can we dig holes in the ground?

19-06-2004, 02:24 PM
Can we connect commodities? Can they merge companies?

Jen C
19-06-2004, 02:27 PM
Needs to be done in three dimensions, as you can't using two-D as there can only be a maximum of eight lines (or curves) before the final 9th line has to cross one other. There is always one house missing a commodity :p

Going over or under with 3D solves this :D

19-06-2004, 02:27 PM
Grrrrr- always that last connection....

19-06-2004, 02:30 PM
Exactly Jen - I built a bridge in my attempt :D

Shaun Minfie
19-06-2004, 02:33 PM
Convert the houses to solar power

19-06-2004, 02:36 PM
If the answer to this 2D quiz is to do it in 3D then this is officially the worst quiz ever.

Obviulsy there is a key stratergy needed if if the job is possible,i doubt the answer is to modify the paremeters of the question.

19-06-2004, 02:38 PM
No, the answer is not modifying the question, it is building on parameters the question never defined.

He said they shouldnt cross - he didn't say that we couldnt flip the picture around, look from a different angle, and build some sort of bridge :D

19-06-2004, 02:44 PM
Here's my attempt:


19-06-2004, 03:11 PM
The solution is to route that last line through a house, as this does not break the "cross another line" rule.

Solution Here (http://puzzle.dse.nl/harder/gas_water_electricity_us.html)

19-06-2004, 03:54 PM
I thought you weren't allowed to do that...

Graham L
19-06-2004, 04:09 PM
This is what happens when you privatise utilities. :D

But it's a [v]very[/b] old puzzle.