# 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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sixleggedspider
Icarian Member

 Posted: Thu Sep 02, 2010 3:56 am    Post subject: 1 MURDER = ROPE + LOUNGE + GREEN
Sentran
Ray of Sucking Funshine

 Posted: Thu Sep 02, 2010 3:54 pm    Post subject: 2 Sounds like the answer to a game of Clue to me. In this case, Mr. Boddy was killed in the Lounge by Mr. Green with the Rope._________________Sentran "Speaking of double negatives, I haven't read greylab yet today." - Lifeinmomland
Trojan Horse
Daedalian Member

 Posted: Thu Sep 02, 2010 4:45 pm    Post subject: 3 Being the pure mathematician I am, I will just point out that this is an NP-complete problem; thus it is pointless to try to solve it.
Sentran
Ray of Sucking Funshine

 Posted: Thu Sep 02, 2010 4:49 pm    Post subject: 4 After a second look, this reminds me of the classic GL puzzle SEND+MORE=MONEY_________________Sentran "Speaking of double negatives, I haven't read greylab yet today." - Lifeinmomland
Sentran
Ray of Sucking Funshine

 Posted: Thu Sep 02, 2010 9:57 pm    Post subject: 5 My scribble sheet looks terrible, but here's what I came up with: N=1, G=2, D=3, E=4, L=5, M=6, O=7, P=8, R=9, U=0 Nice first entry! Thanks for posting!_________________Sentran "Speaking of double negatives, I haven't read greylab yet today." - Lifeinmomland
Jack_Ian
Big Endian

 Posted: Thu Sep 02, 2010 10:36 pm    Post subject: 6 Well done Sentran. I thought this might have been a good one to solve over a cuppa, but I rapidly ran out of logical steps that would narrow it down for me. I figured eventually I'd need to start guessing, but unfortunately that would have taken at least another 2 cups.
Tinhorn
f/k/a Dave10000

 Posted: Fri Sep 03, 2010 6:08 pm    Post subject: 7 Four possible answers? 609349=9784+570124+29441 809129=9342+730562+69225 927037=7543+852163+67331 945025=5632+864172+75221
Sentran
Ray of Sucking Funshine

Posted: Fri Sep 03, 2010 6:32 pm    Post subject: 8

Tested and confirmed. Nice find!
_________________
Sentran
"Speaking of double negatives, I haven't read greylab yet today." - Lifeinmomland
sixleggedspider
Icarian Member

 Posted: Sat Sep 04, 2010 1:17 am    Post subject: 9 i knew you'd get them all quickly i was going to title it: Dial 9 for Murder for a unique solution but I decided you didn't need the hint.
mathgrant
A very tilted cell member

Posted: Sat Sep 04, 2010 1:42 am    Post subject: 10

 sixleggedspider wrote: i knew you'd get them all. i was going to title it: Dial 9 for Murder for a unique solution but I decided you didn't need the hint.

Wait, what?

A well-designed logic puzzle (or alphametic) should have exactly one solution, based on the information explicitly given. If you're aware that there is more than one solution, you don't publish the puzzle as is, or give a "hint" to the intended solution -- you add more explicit information to the puzzle.

I'm sure some other GLer can express what I'm trying to say more helpfully. . .
_________________
My logic puzzle blog
sixleggedspider
Icarian Member

 Posted: Sat Sep 04, 2010 1:46 am    Post subject: 11 students learn by failing - sorry you didn't appreciate my effort
Lepton*
Guest

 Posted: Sat Sep 04, 2010 9:10 am    Post subject: 12 Don't mind mathgrant. If you know there are exactly 4 unique solutions, post it as "Find the four unique solutions". Basically, it's good etiquette to ensure the solver knows when he/she has finished the puzzle.
Quailman
His Postmajesty

 Posted: Sat Sep 04, 2010 1:13 pm    Post subject: 13 Better yet, construct it such that one of the solutions spells a 10 letter word when read 1-2-3-etc.
mathgrant
A very tilted cell member

Posted: Sat Sep 04, 2010 4:10 pm    Post subject: 14

 Lepton* wrote: Don't mind mathgrant.

Yeah, don't mind the guy who runs his own logic puzzle blog and who's been contacted by the Acquisitions Editors of Brain Games (which will hopefully result in my puzzles being published in said magazine in the future). I appreciate that you and Quailman accepted my open invitation to take my sentiment and phrase it more constructively, though. I didn't know how to say it, but I knew it needed to be said.

Please feel free to remain in the puzzle community, sixleggedspider! It took me a long time to become as incredibly amazing at constructing puzzles as I am now, and if you can ignore my extreme lack of tact, maybe you can find people on the GL who can help you become amazing, too!

This message brought to you by Unwarranted Self-Importance™.
_________________
My logic puzzle blog
Sentran
Ray of Sucking Funshine

Posted: Sat Sep 04, 2010 5:45 pm    Post subject: 15

 sixleggedspider wrote: students learn by failing - sorry you didn't appreciate my effort

Speaking as another new member of the board, I tested and retested my first puzzle solution many times to make sure that I had only one answer. Even then, they found things I was not expecting. Luckily, I'd given enough detail that I could still be specific about the answer.
_________________
Sentran
"Speaking of double negatives, I haven't read greylab yet today." - Lifeinmomland
LordKinbote
Daedalian Member

Posted: Sat Sep 04, 2010 7:52 pm    Post subject: 16

mathgrant wrote:
 Lepton* wrote: Don't mind mathgrant.

Yeah, don't mind the guy who runs his own logic puzzle blog and who's been contacted by the Acquisitions Editors of Brain Games (which will hopefully result in my puzzles being published in said magazine in the future). I appreciate that you and Quailman accepted my open invitation to take my sentiment and phrase it more constructively, though. I didn't know how to say it, but I knew it needed to be said.

Please feel free to remain in the puzzle community, sixleggedspider! It took me a long time to become as incredibly amazing at constructing puzzles as I am now, and if you can ignore my extreme lack of tact, maybe you can find people on the GL who can help you become amazing, too!

This message brought to you by Unwarranted Self-Importance™.

Sandwich rule: a constructive criticism in between two positives. You'll never seem pompous again.
Lepton*
Guest

 Posted: Sun Sep 05, 2010 3:39 pm    Post subject: 17 LordKinbote, you're looking especially attractive today. Follow your own advice, you pompous hypocrite. It's always such a pleasure to talk with you. Like this?
LordKinbote
Daedalian Member

Posted: Sun Sep 05, 2010 10:05 pm    Post subject: 18

 Lepton* wrote: LordKinbote, you're looking especially attractive today. Follow your own advice, you pompous hypocrite. It's always such a pleasure to talk with you. Like this?

I appreciate the humor. However, the middle sentence wasn't constructive, nor did it have much to do with the first and last sentence. My post, before I opted for brevity, did actually follow my own rule, but whatever...Grant and I are on good terms, and sixleggedspider is a stranger to us all. One can act differently with people they've talked to for a while than they do with strangers without being a hypocrite, especially if your first words are a first impression. Thanks for giving the opportunity to clarify, though.
Antrax
ESL Student

 Posted: Mon Sep 06, 2010 5:18 am    Post subject: 19 Note to self: get more chestnut-posting newbies so the old timers can get the condescension out of their systems._________________After years of disappointment with get rich quick schemes, I know I'm gonna get rich with this scheme. And quick!
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