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1500 questions
35
votes
3 answers
Translating a fiendishly exceptional automorphism of $S_6$ into a lay-math puzzle
Foreward: This post not a puzzle in itself, but an invitation for you to show off your puzzle-making skill regarding a given topic. Although the tag description of "puzzle-creation" seems to discourage its use in this manner, a search of its posts…
Feryll
- 2,369
- 11
- 28
35
votes
1 answer
Which country did my sister visit?
My sister is always talking about pilots. And her passengers. And planes in general. She's a flight attendant, see, and she is OBSESSED with all things aeronautical (always has been). On the rare occasions that she's back in the country long enough…
Stiv
- 140,467
- 11
- 495
- 752
35
votes
1 answer
A significant milestone
My left half is often used in dividing money,
It's not round but square: hold Attila in fear!
My right half is often used in metric spaces,
Islands in borderlands, lakes in a state.
Together with and we're sweet,
Together without we're this post.
Rand al'Thor
- 116,845
- 28
- 322
- 627
34
votes
1 answer
I tried to make a puzzle unlike any I'd seen before. The answer is a three digit number. Good luck! I hope it's fun
The answer is three digits. You get this picture and the following list:
RIGHT AWAY
UPHILL
LEFT HOOK
THROW UP
DOWN UNDER
Bonus Hint
You cannot figure out #2 without first understanding #1.
Connor MC
- 487
- 3
- 10
34
votes
4 answers
First digit of 3^2020
Inspired by
The last digit for 3^(2019)
Can you find the first digit of 32020 without a computer?
Dmitry Kamenetsky
- 35,897
- 5
- 66
- 276
34
votes
1 answer
This cipher needs a name!
This puzzle is a spin-off from the 'This new puzzle type needs a name' series.
I have devised a new cipher and used it to encode its own name. I need you to tell me:
What is its name?
This puzzle combines elements from common puzzle types. The…
Stiv
- 140,467
- 11
- 495
- 752
34
votes
1 answer
An unusual shopping list
6 bears
3 cucumbers
2 winks
2 birds
5 sheets
3 judges
2 bones
2 dogs
3 houses
4 feathers
1 rake
3 posts
4 daisies
3 razors
1 bat
3 lords
4 pancakes
2 boards
3 peacocks
5 whistles
msh210
- 12,844
- 2
- 49
- 120
34
votes
15 answers
A demigod among men
I'm the one who runs,
The one who hunts,
The one who kills,
The one who destroys,
In verity I am an oxymoron,
The one who erases memories,
Yet remembers every detail,
The one who is black,
But has a twin who is white,
Who / what am I?
JS1
- 17,874
- 3
- 52
- 103
34
votes
16 answers
Older twin's birthday is one day after younger's
I have been asked this puzzle in an interview. There was not a lot of time left so I couldn't solve it quickly and the interviewer kind of let it go as he had to wrap up the interview
Foo and Bar are twin brothers. Foo is older than Bar by 5…
Vallabh Patade
- 449
- 1
- 4
- 4
34
votes
10 answers
Winning Strategy for the Magician and his Apprentice
There are $13$ upside-down opaque cups and $2$ balls, a magician and his apprentice and yourself. You decide under which cups to put the balls, and the objective of the magician is to find the two balls with only $4$ guesses.
The magic trick works…
Ben Levin
- 341
- 3
- 3
34
votes
9 answers
Wolves and sheep
All the sheep were living peacefully in the Land of Shewo. But suddenly they were struck by a danger. A few wolves dressed up as sheep entered the territory of Shewo and started killing the sheep one by one.
To find a solution to this misery, the…
wanderer
- 1,198
- 7
- 14
34
votes
6 answers
A Masterpiece: A mirror or an ABC?
I have worked on this masterpiece for soooo long, hope you all like it!
The PUZZLE
A is for the adventurous who approached the door
B bragged his brilliant bronze when there isn't even one
C is the Chinese classifier living with a chimpanzee…
Omega Krypton
- 21,640
- 2
- 25
- 125
34
votes
3 answers
What is the minimum number of straight lines to connect all the dots on this grid?
Recently a question was posted with this picture of a 7x7 grid of dots, asking for a possible configuration with 12 lines where you can draw them without lifting a pencil. But is it possible with 11 lines? If so, what about 10?
Just to be clear,…
warspyking
- 14,500
- 10
- 78
- 144
34
votes
3 answers
Mate in one with NO PIECES?
The following pictures depict chess positions one move before white checkmated black:
The problem is, I seemed to have completely lost which pieces each letter/number represents. All I know is that the number substitution of the pieces is…
awesomepi
- 2,969
- 15
- 50
34
votes
2 answers
Mr. Montague's dream
So speaks Mr. Montague, missing no beat,
reverberating stutters in tropical heat:
"Each river mouth's built up, we've got naans to eat;
then, lodgings we have; a café would be neat!"
They're terribly moved by this repeated sound;
excited,…
Jafe
- 78,615
- 8
- 162
- 614