Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It only takes a minute to sign up.

Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top
Puzzling

Top Questions

Ask Question
Active 1 Bountied Hot Week Month
126 votes
5 answers
140k views

Is this duplo train track under too much tension?

Bob Bixler's user avatar
Bob Bixler
  • 559
45 votes
4 answers
2k views

A colorful dodecahedron

Herbert Kociemba's user avatar
Herbert Kociemba
  • 1,525
11 votes
8 answers
2k views

frog on a number line

Will Octagon Gibson's user avatar
Will Octagon Gibson
  • 4,667
16 votes
3 answers
2k views

Interesting irrational number

Zomulgustar's user avatar
Zomulgustar
  • 2,752
18 votes
3 answers
1k views

Sums in a (very small) box

Nautilus's user avatar
Nautilus
  • 6,536
26 votes
2 answers
3k views

The world's smallest square maze?

ACB's user avatar
ACB
  • 5,644
18 votes
1 answer
2k views

Reducing π to zero (again)

SquareFinder's user avatar
SquareFinder
  • 711
25 votes
1 answer
3k views

Chess with jumping

Greg Martin's user avatar
Greg Martin
  • 938
21 votes
2 answers
2k views

Can you find a 3x3 white square somewhere in this relatively prime graph?

Dmitry Kamenetsky's user avatar
Dmitry Kamenetsky
  • 31.7k
28 votes
1 answer
2k views

The nameless horror

Stiv's user avatar
Stiv
  • 129k
21 votes
1 answer
1k views

Order the cities, then find which one is not described

xyldke's user avatar
xyldke
  • 1,493
21 votes
1 answer
3k views

Behaviorists hate this trick

Going hamateur's user avatar
Going hamateur
  • 6,018
6 votes
2 answers
2k views

Element lost? Call a scientist!

Stiv's user avatar
Stiv
  • 129k
4 votes
4 answers
1k views

Numbers that are averages of their digits

Matthieu M.'s user avatar
Matthieu M.
  • 263
15 votes
2 answers
706 views

A Trivial Pursuit #03 (History 1/4): Jurassic World

Stiv's user avatar
Stiv
  • 129k
15 votes
2 answers
1k views

Very small regional Yajilin

Jafe's user avatar
Jafe
  • 75.5k
7 votes
5 answers
514 views

Minimum K for detecting fake pearls in one weighing

Benjamin Wang's user avatar
Benjamin Wang
  • 1,000
20 votes
1 answer
1k views

A Trivial Pursuit #01 (Geography 1/4): History

Alaiko's user avatar
Alaiko
  • 5,586
15 votes
2 answers
818 views

A Trivial Pursuit #10 (Art and Literature 2/4): Bookshelf

juicifer's user avatar
juicifer
  • 7,719
12 votes
1 answer
2k views

Poison ivy chess: Can the king get to safety?

new Q Open Wid's user avatar
new Q Open Wid
  • 2,450
18 votes
1 answer
839 views

Hidden dots in the center

M Oehm's user avatar
M Oehm
  • 57.2k
9 votes
3 answers
1k views

What kind of puzzle is this?

user21820's user avatar
user21820
  • 1,115
18 votes
1 answer
942 views

A Trivial Pursuit #12 (Sports and Leisure 2/4): Logic Boat

fljx's user avatar
fljx
  • 12.8k
20 votes
1 answer
658 views

A Trivial Pursuit #04 (Art and Literature 1/4): Threesome

Stiv's user avatar
Stiv
  • 129k
15 votes
1 answer
777 views

A Trivial Pursuit #07 (Geography 2/4): String Theory

M Oehm's user avatar
M Oehm
  • 57.2k
15 votes
1 answer
712 views

The image you are requesting does not exist?

Lezzup's user avatar
Lezzup
  • 4,834
20 votes
1 answer
839 views

Transform a (very small) crossword

GentlePurpleRain's user avatar
GentlePurpleRain
  • 24.9k
7 votes
2 answers
799 views

Vector Sum of Pythagorean Triples

loopy walt's user avatar
loopy walt
  • 18.2k
13 votes
1 answer
965 views

What is a Contradictory Word™?

Yout Ried's user avatar
Yout Ried
  • 1,987
13 votes
1 answer
881 views

A Trivial Pursuit #06 (Sports and Leisure 1/4): Life Goals

Gareth McCaughan's user avatar
Gareth McCaughan♦
  • 116k
16 votes
1 answer
684 views

A Trivial Pursuit #05 (Science and Nature 1/4): Animal Songs

Prim3numbah's user avatar
Prim3numbah
  • 27.1k
18 votes
1 answer
860 views

A Trivial Pursuit #11 (Science and Nature 2/4): The Search

Alaiko's user avatar
Alaiko
  • 5,586
8 votes
2 answers
679 views

A fantastic puzzle

Bass's user avatar
Bass
  • 74.1k
13 votes
1 answer
785 views

A Trivial Pursuit #09 (History 2/4): Windows 7

samm82's user avatar
samm82
  • 6,673
13 votes
1 answer
934 views

A Trivial Pursuit #02 (Entertainment 1/4): Wrong Superhero

Jafe's user avatar
Jafe
  • 75.5k
12 votes
1 answer
682 views

A delicious country puzzle

Stiv's user avatar
Stiv
  • 129k
1 vote
2 answers
979 views

16 queens puzzle

RobPratt's user avatar
RobPratt
  • 11.6k
15 votes
1 answer
655 views

Excuse me, I don't wear pointy hats!

Gareth McCaughan's user avatar
Gareth McCaughan♦
  • 116k
7 votes
5 answers
484 views

Mexican Standoff -- 4 way

Retudin's user avatar
Retudin
  • 7,654
15 votes
1 answer
448 views

Regional Business

Jafe's user avatar
Jafe
  • 75.5k
13 votes
2 answers
417 views

Build-an-Animal Workshop

Tom's user avatar
Tom
  • 70.2k
11 votes
1 answer
674 views

Cryptic Division 4: Oops! All Math!

Gareth McCaughan's user avatar
Gareth McCaughan♦
  • 116k
7 votes
1 answer
459 views

Your answer may not make any sense to me

Johnson's user avatar
Johnson
  • 4,336
13 votes
1 answer
548 views

Colourful Scenery

caPNCApn's user avatar
caPNCApn
  • 17.1k
13 votes
1 answer
513 views

A Trivial Pursuit #08 (Entertainment 2/4): Names

caPNCApn's user avatar
caPNCApn
  • 17.1k
12 votes
1 answer
551 views

Musk Oxen and Arctic Foxen

Jafe's user avatar
Jafe
  • 75.5k
11 votes
1 answer
546 views

A Trivial Pursuit #13 (Geography 3/4): Things Fall Apart

Daniel S's user avatar
Daniel S
  • 4,339
7 votes
1 answer
807 views

Before the Common Era

Jafe's user avatar
Jafe
  • 75.5k

Looking for more? Browse the complete list of questions, or popular tags. Help us answer unanswered questions.

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.