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1500 questions
568
votes
5 answers
A short, brutal riddle
Left alone, I'm a word with five letters.
I'm honest and fair, I'll admit.
Rearranged, I'm of no use to trains.
Again, and I'm an overt place, warm and well lit.
What am I?
Roland
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444
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4 answers
This is important. I need you to listen…
Look, you don't know me. We've never met. But, like I said, I need you to listen...
I had the most disturbing dream the other night... Woke up in a cold sweat and couldn't get back to sleep. It wasn't a nightmare as such, just ... eerie, I guess? I…
Alconja
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341
votes
1 answer
A puzzle in 140 characters
Your final answer will respond to the question "Why don't I like Twitter that much?"
Like usual, I'll confirm any sub-answers if you find them
Here's the link to the puzzle on Twitter.
Here's the text of the puzzle:
❄#♠
…
stacksfiller
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267
votes
1 answer
Is this Tetris puzzle solvable?
As a birthday present last year, I received some fridge magnets. They didn't come as a puzzle, so I don't know if they have a solution, but I made a puzzle out of them anyway.
The magnets are tetrominoes. There are 7 of each shape. Is it possible to…
James Webster
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264
votes
6 answers
You have prepared. You are determined. You approach the door
Hints:
You don't need any hints, they are littered throughout the images everywhere, and I'm not giving you any more. :)
Ok, I will perhaps assist in framing things a little... This is actually a deceptively simple puzzle (though, simple…
Alconja
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240
votes
8 answers
My prefix is food, my suffix is rude
I thought of this riddle myself. Feedback is appreciated.
My prefix is food.
My suffix is rude.
My infix comes in rounds.
I keep you off the ground.
What am I?
Riley
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218
votes
1 answer
An overheard gang meeting, a double agent, and a murder
I was walking home late last night and heard raised voices coming from a boarded up old warehouse. I stopped, out of sight, to listen...
[When I started eavesdropping, the conversation was already under way...]
Gangster 1: -infiltrator in our…
Alconja
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212
votes
1 answer
Lock your computer when you walk away!
Well this is strange.
I forgot to lock my monitor when I walked away from my desk, at work, and one of my co-workers decided to have a little fun.
When I got back, I found this little C# console app code segment, sitting forefront on my machine. …
Khale_Kitha
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200
votes
10 answers
Game of Life: Kill the Sun
Below is an initial state for Conway's Game of Life with a single pulsar. Living cells are white.
The area marked with red is your base. You are free to modify any of the red cells, but only those, and only in the initial generation. You are not…
BaSzAt
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196
votes
26 answers
In the 100 blue eyes problem - why is the oracle necessary?
The riddle
Randall Munroe (of xkcd fame) has, a bit hidden on his site, a logic puzzle:
A group of people with assorted eye colors live on an island. They are
all perfect logicians -- if a conclusion can be logically deduced,
they will do it…
dwjohnston
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184
votes
3 answers
Deusovi Honeypot
Looks like the community has spoken.
With a heavy heart (as if), I have trapped @Deusovi behind a never repeating, fractally recursive, infinite, unsolvable labyrinth. To keep him busy, I added a couple of teleports.
The green part of the maze…
Bass
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180
votes
1 answer
Chaos and Order: a visual puzzle in stained glass
I created a visual puzzle, which my wife then implemented as part of a stained-glass window. I've no idea if it is (a) obvious, (b) stupid or hopefully (c) extremely clever, and hence would love to hear your opinion.
Here's a photo. What does it…
MattClarke
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- 10
172
votes
1 answer
Merlin and Hermes: Mysterious Lines
Two adventurers, Merlin and Hermes, approached a large iron door built into a cliff face."Well...", said Hermes, "What do we do now?". Merlin produced an old, large piece of crumpled paper from his pocket. "Hrm...", Merlin mumbled. "It says here…
Tryth
- 13,960
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172
votes
1 answer
Internship Available!* - Figure out what you're being asked to do before you sign up
Sine waves bound in rectangles shaped into prisms. Mass increases, position changes twice, and mass decreases. The prisms become rectangles and are either discarded or stored for later use. If that sounds exciting to you, you may have an exciting…
Travis Don Kindred
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168
votes
1 answer
The Rube Wordberg Machine
Gah! I used to be the brilliant one at Verba Retorta University, but ever since that damned Professor Wordberg showed up, there's been nothing but trouble. And it's all his confounded machine's fault!
He's a fraud – he has to be – I just needed…
Alconja
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