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Extremely Tough Brain Teaser

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Murphy Durphy

Golden Member
Aug 12, 2003
1,248
0
0
The more and more I try the more and more I want to agree that it is impossible.

However I had 3 professors guarantee me there was in fact a way to do it without cheating, and one was willing to bet money on it.

Gah.
 
C

cubby1223

Lifer
May 24, 2004
13,518
42
86
It would have to be an incredibly stupid solution, like having your line cross the intersection of the 3 gates in the center of the picture, and having it count as passing all three gates. Or maybe you use some crazy definition of the word "gate" or "double over".
 
dullard

dullard

Elite Member
May 21, 2001
26,056
4,708
126
With alterations or bending of the rules, it is solvable. For example, go in 3D and jump over/under a gate. Or, pass through a corner, exactly, in a way that neither gate is crossed.

But with strict rule interpretations, it is not possible.
 
funboy6942

funboy6942

Lifer
Nov 13, 2001
15,368
418
126
That would mean crossing the bottom middle Square top line twice then wouldnt it. I mean it has no line going through it suggesting that I can go through it making it really another gate. That would be like going through any of the other square 2 times then if it is :p
 
KLin

KLin

Lifer
Feb 29, 2000
30,433
748
126
Originally posted by: funboy42
That would mean crossing the bottom middle Square top line twice then wouldnt it. I mean it has no line going through it suggesting that I can go through it making it really another gate. That would be like going through any of the other square 2 times then if it is :p
Click to expand...

That line is cut into 2 "gates" by the perpendicular line above it.
 
S

SoftwareEng

Senior member
Apr 24, 2005
553
4
81
Originally posted by: Murphy Durphy
You have to pass through each "gate" only once. The gates are just each interrior and exterrior line of the box. You can criss cross your lines, but you can't double over a gate. Apparently it took over 200 years for it to be solved. Check it out.

Image

Edit: The bottom image is an example of a 'mess-up', with an x over the two missed gates.
Click to expand...

dude, remove your "solution" from the problem and link to it separately! You're confusing people with it.
 
R

RapidSnail

Diamond Member
Apr 28, 2006
4,257
0
0
Isn't this like the "Seven Bridges of Koenigsberg" problem? It's impossible because there are more ins than outs or something like that.
 
M

Murphy Durphy

Golden Member
Aug 12, 2003
1,248
0
0
If this is such a famous problem, shouldn't the answer be somewhere on the internet? I've searched the web and I've searched books about Euler theory and can't find mention of this problem anywhere.
 
P

Pastore

Diamond Member
Feb 9, 2000
9,728
0
76
Originally posted by: Murphy Durphy
If this is such a famous problem, shouldn't the answer be somewhere on the internet? I've searched the web and I've searched books about Euler theory and can't find mention of this problem anywhere.
Click to expand...

I've come to the conclusion it's not possible. Not without a trick of some kind...
 
edro

edro

Lifer
Apr 5, 2002
24,326
68
91
It is impossible.

I tried all through school (elementary, high school and college) on spare time doodling... I have probably filled a dozen notebooks and tried every possible solutions.

It is impossible.
 
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