Click to visit our sponsors!

homeGeek CultureWebstoreeCards!Forums!Joy of Tech!AY2K!webcam

  The Geek Culture Forums
  Your News!
  Einstein's Puzzle (Page 1)

Post New Topic  Post A Reply
profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone!
This topic is 2 pages long:   1  2 
next newest topic | next oldest topic
Author Topic:   Einstein's Puzzle
+Andrew
Super Geek

Posts: 198
From: Boston, MA, USA
Registered: Aug 2001

posted February 23, 2002 19:44     Click Here to See the Profile for +Andrew   Click Here to Email +Andrew     Edit/Delete Message   Reply w/Quote
Einstein's Puzzle - supposedly only 2% of the world can solve it. Can you?

-Andrew

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 23, 2002 21:18     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
Humm, interesting. I shall work on it tomorrow. I must get paper and some makers. I can't fail. I must solve it. i did notice that the answer is at the bottom, but HA, i am not going to creat, cheaters never get anywhere in life.
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

ZorroTheFox
SuperBlabberMouth!

Posts: 1117
From: Milton, WA, USA
Registered: Oct 2001

posted February 23, 2002 21:29     Click Here to See the Profile for ZorroTheFox   Click Here to Email ZorroTheFox     Edit/Delete Message   Reply w/Quote
funny, as soon as I clickecd on that link, a trojan horse attempt was made on My computer. I hope that was only a kwinkydink.......Z

IP: Logged

platypus
Super Geek

Posts: 198
From: Provo, UT
Registered: Nov 2001

posted February 23, 2002 21:33     Click Here to See the Profile for platypus   Click Here to Email platypus     Edit/Delete Message   Reply w/Quote
1 hour, 9 minutes

"I am so smart! I am so smart! S-M-R-T! I mean, S-M-A-R-T!"

the surrounding story smacked of urban legend, but the puzzle was pretty darn hard. that's the sort of question they ask on the LSAT and the GRE's analytical section (both of which I scored highest on). so... yeah. I'm so smart

</brag>

------------------
pages:
www.thelemur.net
www.saintehlers.com
www.squishbox.org

IP: Logged

platypus
Super Geek

Posts: 198
From: Provo, UT
Registered: Nov 2001

posted February 23, 2002 21:46     Click Here to See the Profile for platypus   Click Here to Email platypus     Edit/Delete Message   Reply w/Quote
actually, I'm just waiting for one of you to beat my time, so I can be shamed. But until then, I'll just be happy I finished first (even if that's only because I started first).

------------------
pages:
www.thelemur.net
www.saintehlers.com
www.squishbox.org

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 23, 2002 22:24     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
zorro, i think it was something else. i have been sitting at that site for almost 30 min while i was posting here, and have not had a single attack. Then again maybe they just don't like me.
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

+Andrew
Super Geek

Posts: 198
From: Boston, MA, USA
Registered: Aug 2001

posted February 24, 2002 09:10     Click Here to See the Profile for +Andrew   Click Here to Email +Andrew     Edit/Delete Message   Reply w/Quote
platypus: It took me maybe a total of 40 minutes (conservative estimate - I wasn't keeping precise track of time) to solve. But, that time doesn't really count because I worked on the puzzle in two separate sessions with a movie in between.

-Andrew

IP: Logged

Evilbunny
Highlie

Posts: 614
From: A Calculus book near you...
Registered: Nov 2001

posted February 24, 2002 09:14     Click Here to See the Profile for Evilbunny   Click Here to Email Evilbunny     Edit/Delete Message   Reply w/Quote
Hmm... Fun!
I think I'll work on it shortly...

IP: Logged

Stereo
Super Geek

Posts: 148
From: Hull, Quebec, Canada
Registered: Apr 2001

posted February 24, 2002 09:16     Click Here to See the Profile for Stereo   Click Here to Email Stereo     Edit/Delete Message   Reply w/Quote
I don't know exactly how long it took me. Something between 15 and 20 minutes. But I worked with an hypothesis: there's no hidden tricks. Should I add that I like that kind of puzzles? (Well, I like any kind of puzzles, but those take less time than the 5000 pieces ones.)

IP: Logged

Zwilnik
Alpha Geek

Posts: 291
From: London, UK
Registered: Dec 2000

posted February 24, 2002 10:31     Click Here to See the Profile for Zwilnik     Edit/Delete Message   Reply w/Quote
about 15 minutes, would have been quicker but I started charting by nationality rather than house colour and had to restart.

IP: Logged

donnab
Mini-Geek

Posts: 56
From: Cape Cod
Registered: Jan 2002

posted February 24, 2002 15:52     Click Here to See the Profile for donnab     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by ZorroTheFox:
funny, as soon as I clickecd on that link, a trojan horse attempt was made on My computer. I hope that was only a kwinkydink.......Z

Sub7, most likely.

------------------
Donna

IP: Logged

LifetimeTrekker
Alpha Geek

Posts: 326
From: Albuquerque, NM, UD
Registered: Sep 2001

posted February 24, 2002 19:18     Click Here to See the Profile for LifetimeTrekker   Click Here to Email LifetimeTrekker     Edit/Delete Message   Reply w/Quote
I remember working this out years ago. It's not that difficult a puzzle, Enjoy the workout!

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 24, 2002 19:21     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
Now that i sat down and worked on it. it is amazing simple. If i did it right. i just drew it all out on some paper. so all and all it took me about 45 min to do. Not to bad i guess. Mt brain was ll warmed up, so the rest of the day was a let down.
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

quantumfluff
Highlie

Posts: 672
From: the ether
Registered: Jun 2000

posted February 24, 2002 19:55     Click Here to See the Profile for quantumfluff   Click Here to Email quantumfluff     Edit/Delete Message   Reply w/Quote
I've got a different challenge. I'll post the solution to another thread in a day or two.

The newly organized Layton City Eye, Ear, Nose and Throat Center had hired four specialists -- Doctors Morton, Carlton, Stanton and Kinston. Each doctor was renowned in his particular field. One was an eye specialist; one an ear specialist; one, a nose specialist; and one, a throat specialist. Each man had come to the Center from one of the four other local hospitals: Northside, Southside, Eastside and Westside. Given the clues below, determine each doctor's name (first names: Thomas, Albert, Gary and Marvin), his specialty and the hospital where he previously practiced.

1. Dr. Carlton and Gary and the man from Westside Hospital were natives of Layton City.

2. The ear specialist had never worked at Southside Hospital.

3. Neither Dr. Stanton nor Gary nor the Throat specialist had ever practiced at Eastside Hospital.

4. Dr. Carlton was not the ear specialist.

5. Albert had never practiced at Eastside or Westside.

6. Dr Morton and the man from Northside Hospital were avid tennis fans.

7. The ear specialist and Marvin had their offices and staff on the first floor of the Center. Dr. Stanton and the nose specialist were on the second floor.

IP: Logged

Aiyana
Geek-in-Training

Posts: 39
From: Columbus, OH USA
Registered: Jan 2002

posted February 24, 2002 21:04     Click Here to See the Profile for Aiyana   Click Here to Email Aiyana     Edit/Delete Message   Reply w/Quote
Yay, I got the 2% puzzle. I didn't time it exactly, but I think maybe it took me 25-30 minutes. With a friend bugging me on AIM at the time.

Sure, I feel smart now, but I'm sure Tuesday's parasitology exam will say otherwise. *sigh*

IP: Logged

mephisto
Assimilated

Posts: 487
From:
Registered: Feb 2001

posted February 24, 2002 21:58     Click Here to See the Profile for mephisto   Click Here to Email mephisto     Edit/Delete Message   Reply w/Quote
15 minutes....bleh...and i still feel stupid.....becuase i had to use paper and pen...


IP: Logged

funjon
unregistered
posted February 25, 2002 02:21           Edit/Delete Message   Reply w/Quote
I got it in 10 minutes. God, my head hurts now

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 25, 2002 05:33     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
don't feel bad about using th paper. That is the sectret to doiing it. so congrats on solving it.
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

greycat
Super Geek

Posts: 182
From:
Registered: Oct 2001

posted February 25, 2002 10:10     Click Here to See the Profile for greycat     Edit/Delete Message   Reply w/Quote
I'm at work, so I don't know how long the puzzle took me (work a little while, read e-mail, work a little while, someone calls, ...). Certainly more than 10 minutes.

I couldn't imagine doing it without pen/paper. I use the matrix approach to this kind of problem -- in this case, a 5x5 upper triangular matrix, with a 5x5 grid in each of the sections. It probably took me at least 3 minutes just to draw the lines!

One nitpick on the puzzle statement, though: it says the Norwegian lives in the "first" house, but all other references to house ordering use "left/right". So you have to know whether the first house is leftmost, or rightmost. Since the puzzle is in English, which is read left->right, I guessed that "first" meant "leftmost", and it turns out I was correct.

This is not an easy puzzle -- if it were in Games magazine, I think it would be categorized as "hard" (three stars? been a while since I read Games).

IP: Logged

CrawGator
Alpha Geek

Posts: 326
From: the heart of Cajun country
Registered: Apr 2000

posted February 25, 2002 12:54     Click Here to See the Profile for CrawGator   Click Here to Email CrawGator     Edit/Delete Message   Reply w/Quote
Took me about 20 minutes to solve this one.

For those people still wrestling with it, try solving the puzzle in the following number order.

9, 14, 8, 4, 5, 1, 7, 11.
12 & 15 simultaneously.
2, 3, 6, 13, 10 should then fall right into place.

------------------
CrawGator

A common mistake people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. Douglas Adams Mostly Harmless

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 25, 2002 13:01     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
Gator, i soved the thing and now you have me confused. I have no clue what you are talking about.
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

CrawGator
Alpha Geek

Posts: 326
From: the heart of Cajun country
Registered: Apr 2000

posted February 25, 2002 13:44     Click Here to See the Profile for CrawGator   Click Here to Email CrawGator     Edit/Delete Message   Reply w/Quote
Ok look at statement 9 first, then 14 and so on. 12 and 15 need to be looked at together.

The rest of them fall into place because they will only fit in place one way after you solve 12 and 15.

At least that is the way I did it.

Note to quantumfluff: I am emailing you my solution to your puzzle. Let me know if I got it right. I don't want to spoil it for the rest of the forum.

------------------
CrawGator

A common mistake people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. Douglas Adams Mostly Harmless

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 25, 2002 15:22     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
Ahh, thanks, now i get what you are saying, and it does make sense.
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

Bregalad
Super Geek

Posts: 203
From: Vancouver, BC, Canada
Registered: Jan 2002

posted February 25, 2002 17:49     Click Here to See the Profile for Bregalad     Edit/Delete Message   Reply w/Quote
I saw this years ago and solved it in under an hour (can't remember how long it took). Today it took 11 minutes from clicking the link to writing the last item into my matrix. Now I'll take on Quantumfluff's puzzle.

IP: Logged

Bregalad
Super Geek

Posts: 203
From: Vancouver, BC, Canada
Registered: Jan 2002

posted February 25, 2002 18:54     Click Here to See the Profile for Bregalad     Edit/Delete Message   Reply w/Quote
Hmmmmm, I don't like the four doctors puzzle at all. I got a working solution a while ago, but it was obtained in an entirely unsatisfying way: by guessing.
I get the feeling that there's a clue missing because using the 7 given leaves a lot of possibilities in my matrix. Oh well, maybe the other puzzle used up all my deductive reasoning for the evening.

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 25, 2002 19:41     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
HUmm, the second one is interesting, i have been working on it for about 15 min now, and think i am no further than when i started. SO i will continue tomorrow.
nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

quantumfluff
Highlie

Posts: 672
From: the ether
Registered: Jun 2000

posted February 26, 2002 05:59     Click Here to See the Profile for quantumfluff   Click Here to Email quantumfluff     Edit/Delete Message   Reply w/Quote
CrawGator got the right answer.

IP: Logged

greycat
Super Geek

Posts: 182
From:
Registered: Oct 2001

posted February 26, 2002 06:11     Click Here to See the Profile for greycat     Edit/Delete Message   Reply w/Quote
quantumfluff's puzzle is more challenging than the "Einstein" one. The matrix is smaller, so it's got less tedium, but it requires a sort of "proof by contradiction".

Actually, the line of reasoning I used was this: one row of my matrix (chosen pretty much arbitrarily) had two possible choices. Assume one of them is true. Go through the rest of the puzzle with this assumption and write "1" in the corner of each square that is forced true under our assumption. The puzzle solved itself from that point with no contradictions.

Now, assume the other choice is true. Go through the puzzle as before... and eventually I hit a matrix row which was forced true regardless of whether I used assumption #1 or #2. So that one had to be true "for real". And I was able to solve the rest of the puzzle from that (it turned out that assumption #1 was indeed true; once I had that, I already had the puzzle, since I'd already worked out the matrix from that point).

A worthy challenge.

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 26, 2002 07:46     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
greycat, what is the matix. Is that the little squares i am putting stuff in to solve it? Or do i need to take a red pill to figure it out?
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

quantumfluff
Highlie

Posts: 672
From: the ether
Registered: Jun 2000

posted February 26, 2002 08:09     Click Here to See the Profile for quantumfluff   Click Here to Email quantumfluff     Edit/Delete Message   Reply w/Quote
I feel so ashamed, I just tried my puzzle and it took over an hour . I was thinking about it wrong. You don't have to solve it by guessing, but you do have to make one hypothesis and see if it leads to a contradiction or success.

I'm surprised this puzzle never shows up on the web. The first time I saw it was in the very early '70s. I did not see the Einstein puzzle (with different names for everything, until abou 1975).

IP: Logged

quantumfluff
Highlie

Posts: 672
From: the ether
Registered: Jun 2000

posted February 26, 2002 08:16     Click Here to See the Profile for quantumfluff   Click Here to Email quantumfluff     Edit/Delete Message   Reply w/Quote
I've got another one - Find the fake coin.

You have 12 coins that all appear identical, but one (and only one) is actually a fake, made of a material that is a different weight then the real coins.

You have the use of a balance that can compare two piles of coins.

In three weighings, tell me which coin is the counterfiet and whether it is lighter or heavier than the real coins.

IP: Logged

CrawGator
Alpha Geek

Posts: 326
From: the heart of Cajun country
Registered: Apr 2000

posted February 26, 2002 10:22     Click Here to See the Profile for CrawGator   Click Here to Email CrawGator     Edit/Delete Message   Reply w/Quote
The old fake coin puzzle. That one is easy.

Anyhow, your 4 doctor puzzle was a real challange. I found a logical pattern to it without making any guesses. You can't pick it apart like the Einstein puzzle, it has to be looked at it as a whole in order to solve it.

------------------
CrawGator

A common mistake people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. Douglas Adams Mostly Harmless

IP: Logged

Bregalad
Super Geek

Posts: 203
From: Vancouver, BC, Canada
Registered: Jan 2002

posted February 26, 2002 17:13     Click Here to See the Profile for Bregalad     Edit/Delete Message   Reply w/Quote
Regarding the Doctors puzzle...

You can see from the timing of my posts that it took about an hour, but I'm sure half of that was spent sitting here searching in vain for a missed condition in the clues. I steadfastly refused to use trial and error until it became clear that it was the only way out.

In terms of guessing, I was faced with a situation where each box had two or more possibilities. I looked for those that had been narrowed to only two possible answers and chose Surname when I saw that one choice limited the choices in another field. At that point one of the hospital boxes was reduced to only two so I flipped a coin and filled in an answer there. The rest of the puzzle was straight forward. I was lucky that my coin landed on tails

Even though I assumed there was only one answer I quickly tried a few other possibilities and ran into a contradiction for all of them.

I said I didn't like the puzzle not because it wasn't challenging, but because it's impossible to pick apart. One must construct a set of simultaneous equations or hammer it using trial and error. It's simply a matter of personal preference.

I welcome people to post more puzzles.

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 26, 2002 19:10     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
Does anyone know a good web site to find these puzzles at?
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

quantumfluff
Highlie

Posts: 672
From: the ether
Registered: Jun 2000

posted February 26, 2002 20:54     Click Here to See the Profile for quantumfluff   Click Here to Email quantumfluff     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Bregalad:
Regarding the Doctors puzzle ... I steadfastly refused to use trial and error until it became clear that it was the only way out...

I agree, it's no real mental challenge if you have to do a lot of guessing and testing, but you can actually do this one with only one guess, so it's not too bad. From the clues alone, you can work it down to a particular pair of first names that have to be from a particular pair of hospitals. The one guess is to pick a hospital for one of them and see if it leads to contradiction or having all the rest fall into place.

IP: Logged

tafkact
Highlie

Posts: 614
From: nowhere, man
Registered: Jan 2000

posted February 27, 2002 04:59     Click Here to See the Profile for tafkact     Edit/Delete Message   Reply w/Quote
oddly enough, i can find NO mention of "fish" anwhere in the clues, and it's mentioned only once on the page - as the question.

it could as easily have been "giraffe", "pelican", "blue whale" or "red-assed babboon"

how was i supposed to know that one of them had a fish?

i was not able to solve this one, even after looking at the answer, from the clues provided.

had at least one mentioned the word fish, ocean, lake, etc - i might have done it

??

IP: Logged

CrawGator
Alpha Geek

Posts: 326
From: the heart of Cajun country
Registered: Apr 2000

posted February 27, 2002 07:03     Click Here to See the Profile for CrawGator   Click Here to Email CrawGator     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by tafkact:
oddly enough, i can find NO mention of "fish" anwhere in the clues, and it's mentioned only once on the page - as the question.

it could as easily have been "giraffe", "pelican", "blue whale" or "red-assed babboon"

how was i supposed to know that one of them had a fish?

i was not able to solve this one, even after looking at the answer, from the clues provided.

had at least one mentioned the word fish, ocean, lake, etc - i might have done it

??


Well the qestion "WHO KEEPS FISH?" logically tells you that one of the five men keep fish. If you have the other pets with their respective owners, the fish have to go to the owner lacking a pet by default.

------------------
CrawGator

A common mistake people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. Douglas Adams Mostly Harmless

IP: Logged

macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 27, 2002 19:53     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
sometimes our minds function so complexly that we miss the simple details.
Nayt

------------------
Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

IP: Logged

iballoondesign
Alpha Geek

Posts: 283
From: Midland, TX
Registered: Dec 2001

posted February 28, 2002 00:24     Click Here to See the Profile for iballoondesign   Click Here to Email iballoondesign     Edit/Delete Message   Reply w/Quote
Don't you see? You have been spend lot of time to doing Einstein's puzzle and lead you to short future. Wow, his theory of time machine sure work!

IP: Logged

tafkact
Highlie

Posts: 614
From: nowhere, man
Registered: Jan 2000

posted February 28, 2002 04:59     Click Here to See the Profile for tafkact     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by CrawGator:
Well the qestion "WHO KEEPS FISH?" logically tells you that one of the five men keep fish. If you have the other pets with their respective owners, the fish have to go to the owner lacking a pet by default.


uhh.... (grind grind griiiiiiiiind) (DING!) (clickclickclickclick whrrrrrrrrrrr BZZZT!)


oh yeah!

i been rebuilding/configuring several servers for the last 4 days, from the mobo on up - and all had major compatability issues with the OS's and the hardware
i'm kinda fried - 'prolly wasn't best time to start on anything requiring brain work

IP: Logged


This topic is 2 pages long:   1  2 

All times are Pacific Time

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | Geek Culture Home Page

© 2002 Geek Culture® All Rights Reserved.

Powered by Infopop www.infopop.com © 2000
Ultimate Bulletin Board 5.47e

homeGeek CultureWebstoreeCards!Forums!Joy of Tech!AY2K!webcam