Extremely Tough Brain Teaser

[Demon-Xanth]

Fold the paper

 

[sash1]

Originally posted by: JustAnAverageGuy
Do tangent lines (i.e. parabola, see pic) count?

JaAG's Solution

- JaAG

lol winner!

 

[Born2bwire]

Originally posted by: Murphy Durphy

Originally posted by: brikis98
you can do it without bending/reinterpreting the rules a bit. for example, if a line goes through a corner, does that count as 0 gates, 1 gate, or 2 gates? likewise, does it have to be one continuous line (or can you lift your pencil)? what about a line that is right on top of an edge of the rectangle? we'd need to have clearly defined rules to prove it's possible (by solving) or impossible...

You can't lift your pencil, and the corner bit I'm getting clarified within the next two hours. I'm going to see if the professor who wanted to bet me $50 there was a solution was including any type of trickery (such as corners) in the process, even though he did originally say there was none.

Heheh, I say he's just messing with you guys. He might as well asked you to disprove graph theory.

 

[JustAnAverageGuy]

Originally posted by: sash1

Originally posted by: JustAnAverageGuy
Do tangent lines (i.e. parabola, see pic) count?

JaAG's Solution

- JaAG

lol winner!

I was starting to wonder if anybody would answer the question, so I did another "solution" while I was waiting.

This one is yet another abuse of the rules, but it's still a legitimate answer. It works since the middle gate (and not the left or right) is actually at the point where my line crosses. I follow the gate and cross it in red.

Though this highly depends upon if you consider the diagram to be

``|``
or
____
|_|_|

My solution requires that it be the first and that the my black paintbrush cross it at that infinitesimally small point between the top left and the top right.

JaAG's Solution 2

 

[Jack Ryan]

Sounds a lot like this

Edit: sorry, someone else remembered this before me.

 

[pontifex]

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.

Blank Template

Example

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

oh come on, this is ATOT. everyone had it solved before they even looked at it.

 

[JonathanM]

SOLVED

 

[Born2bwire]

Originally posted by: JonathanM
SOLVED

Heheh, the concept is good but we just need to hammer out the details. Either way we should be able to get a preliminary paper published on what we have right now.

 

[JonathanM]

Originally posted by: Born2bwire

Originally posted by: JonathanM
SOLVED

Heheh, the concept is good but we just need to hammer out the details. Either way we should be able to get a preliminary paper published on what we have right now.

Hey it works... nobody said it had to be a single line

 

[Demon-Xanth]

Originally posted by: Born2bwire

Originally posted by: JonathanM
SOLVED

Heheh, the concept is good but we just need to hammer out the details. Either way we should be able to get a preliminary paper published on what we have right now.

You must work at my company in either marketing or upper management.

 

[yankeesfan]

http://pics.bbzzdd.com/users/yankeesfan/w58550207.jpg

I win. All you need is a really thick line.

 

[Aharami]

someone show the solution...cuz I cant think of one that agree with the restrictions given

 

[Krazy4Real]

rofl... self owned.

 

[yankeesfan]

Originally posted by: Krazy4Real
i solved it. Give me a sec and i'll upload.

Edit: As promised.

Solution

I believe that's all the gates. Let me know if i missed any.

you went through the top row, middle one twice.

 

[yowolabi]

Originally posted by: yankeesfan
http://pics.bbzzdd.com/users/yankeesfan/w58550207.jpg

I win. All you need is a really thick line.

I actually like this solution.

 

[Krazy4Real]

nevermind...

 

[DrPizza]

Originally posted by: Kyteland
I can prove that this problem has no solution. You can all just give up right now.

Give me 15 minutes or so to write it up.

Edit: To keep you occupied, in a nutshell this is why there is no solution.

Agreed. Nice job, kyteland.

 

[JustAnAverageGuy]

Originally posted by: yankeesfan
http://pics.bbzzdd.com/users/yankeesfan/w58550207.jpg

I win. All you need is a really thick line.

Indeed. You do win.

- JaAG

 

[Mo0o]

http://en.wikipedia.org/wiki/Seven_bridges_of_K%C3%B6nigsberg

 

[yosuke188]

The OP obviously knows that this is impossible as do everyone else here. It took 200 years to solve? Yah, that totally makes sense, because people need to try that long to realize the solution. And notice he puts a or after proving that each one is false, which suggests that he is enjoying everyone struggle to solve a puzzle that is impossible to solve.

He probably made up the professors, or they are just dumb.

 

[Kev]

i did it in my head

 

[Unmoosical]

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.

So it was originally designed without a solution?

 

[Krazy4Real]

Ok guys. Get ready for my attempt number 3! Uploading now.

Edit: Here it is.

This has to be the solution!

Wow... no matter how many times i check i don't see my error until AFTER i upload it.

 

[jimmyjam]

Originally posted by: Krazy4Real
Ok guys. Get ready for my attempt number 3! Uploading now.

Edit: Here it is.

This has to be the solution!

Wow... no matter how many times i check i don't see my error until AFTER i upload it.

You're missing a line in the middle.

 

[yosuke188]

Originally posted by: Krazy4Real
Ok guys. Get ready for my attempt number 3! Uploading now.

Edit: Here it is.

This has to be the solution!

Wow... no matter how many times i check i don't see my error until AFTER i upload it.

you missed the middle left one.