User Florian F

77 votes

How many cars does the millionaire have?

answered Nov 17, 2014 at 10:26

41 votes

Accepted

Game of Drones - Zap it!

answered Jan 20, 2015 at 17:53

40 votes

Two doors with two guards - one lies, one tells the truth

answered Sep 20, 2014 at 9:39

38 votes

In what field does π²=2?

answered Apr 13, 2015 at 9:12

37 votes

Accepted

Single Colour Mastermind Problem

answered Apr 28, 2019 at 9:42

32 votes

Accepted

Cutting a cake into 8 pieces

answered Oct 12, 2014 at 19:30

29 votes

10 digit number where first n digits are divisible by n

answered Oct 19, 2014 at 0:10

29 votes

Accepted

Continue the Pattern of Circles

answered Nov 25, 2014 at 20:41

28 votes

A pentagon that can measure the first 7 integer distances

answered Jul 23, 2022 at 5:35

24 votes

Efficient Mowing at PSE

answered Jul 15, 2022 at 15:36

24 votes

Accepted

Ernie's automatic parking valet

answered Oct 30, 2014 at 22:49

24 votes

Hungry lions and a goat

answered Oct 4, 2014 at 0:19

23 votes

Accepted

Flip a Fair Coin

answered Oct 22, 2014 at 13:21

22 votes

Accepted

How can this fractal shape perfectly cover a certain platonic solid?

answered Jun 29, 2019 at 10:45

21 votes

Nifty Nines Impossibility Puzzle

answered Nov 13, 2022 at 14:20

21 votes

Accepted

Twenty-four trees in eighteen rows of four

answered May 31, 2022 at 11:40

20 votes

Doctor's Dilemma

answered Oct 3, 2014 at 21:25

19 votes

Accepted

Ernie and the Alchemist's Gift

answered Dec 24, 2014 at 12:03

19 votes

Accepted

An overcomplicated Boat Puzzle

answered Dec 4, 2021 at 19:40

18 votes

Accepted

A line not intersecting points in the plane

answered Jun 12, 2021 at 21:11

18 votes

You have one question to tell whether the number I'm thinking of is 1, 2, or 3

answered Sep 3, 2014 at 9:36

18 votes

Accepted

Blue. Orange. Green. Magenta. What does this strange picture represent?

answered Dec 11, 2019 at 20:43

16 votes

Accepted

Infinite Sequence based on Simple Rule

answered May 26, 2019 at 15:32

16 votes

Will you be the first to get free?

answered Aug 15, 2020 at 18:59

16 votes

What is the next move on this minesweeper board?

answered Mar 25, 2022 at 10:21

15 votes

Pythagorean quilts

answered Jul 2, 2020 at 20:30

14 votes

23 Clones and Two Lightbulbs

answered Jan 6, 2016 at 13:15

14 votes

Accepted

Polyomino T hexomino and rectangle packing into rectangle

answered Nov 21, 2014 at 1:15

13 votes

Accepted

How do you arrange the marbles?

answered Dec 17, 2022 at 18:30

13 votes

Accepted

Help me break my friend's code!

answered Nov 17, 2014 at 18:16

Stack Exchange Network

288 Answers

How many cars does the millionaire have?

Game of Drones - Zap it!

Two doors with two guards - one lies, one tells the truth

In what field does π²=2?

Single Colour Mastermind Problem

Cutting a cake into 8 pieces

10 digit number where first n digits are divisible by n

Continue the Pattern of Circles

A pentagon that can measure the first 7 integer distances

Efficient Mowing at PSE

Ernie's automatic parking valet

Hungry lions and a goat

Flip a Fair Coin

How can this fractal shape perfectly cover a certain platonic solid?

Nifty Nines Impossibility Puzzle

Twenty-four trees in eighteen rows of four

Doctor's Dilemma

Ernie and the Alchemist's Gift

An overcomplicated Boat Puzzle

A line not intersecting points in the plane

You have one question to tell whether the number I'm thinking of is 1, 2, or 3

Blue. Orange. Green. Magenta. What does this strange picture represent?

Infinite Sequence based on Simple Rule

Will you be the first to get free?

What is the next move on this minesweeper board?

Pythagorean quilts

23 Clones and Two Lightbulbs

Polyomino T hexomino and rectangle packing into rectangle

How do you arrange the marbles?

Help me break my friend's code!