User Will.Octagon.Gibson - Puzzling Stack Exchange

50 votes

Accepted

Is this Hashi puzzle unsolvable?

answered Jun 17, 2023 at 10:28

50 votes

4,4,2,6,2,10,4,_ sequence from 4th grade packet

answered Apr 25 at 9:33

22 votes

Are there always 2 teams such that they have together defeated every other team

answered Aug 14, 2023 at 23:37

18 votes

Make 27 using 1, 1, 1, 1

answered Jan 21 at 4:52

18 votes

Move exactly two matches to make the two sides equal

answered Oct 31, 2023 at 4:02

17 votes

Accepted

Chem-is-try is hard

answered Jun 27, 2023 at 3:58

13 votes

Interesting irrational number

answered Sep 22, 2023 at 22:44

9 votes

Accepted

Which positive integers have at least one positive integer multiple such that the base 10 representation of that multiple has only even digits?

answered Jul 19, 2023 at 19:36

8 votes

VI or LVE, answer is half a dozen

answered Oct 1, 2023 at 22:00

8 votes

Knights, Knaves, and Spies

answered Jul 18 at 4:45

7 votes

Numbers that are averages of their digits

answered Sep 23, 2023 at 10:27

6 votes

General attacking chessboard squares

answered Mar 9 at 6:06

6 votes

Make the three products equal and as large as possible

answered Mar 29 at 18:53

5 votes

Binary Grid Challenge and X & O Conundrum

answered Mar 6 at 5:00

5 votes

The shady puzzle that will keep you in the dark

answered Feb 23 at 9:43

5 votes

Accepted

Let’s make a huge number with only tiny numbers (pt2)

answered Oct 20, 2023 at 21:50

5 votes

How many digits can be removed from a division puzzle?

answered Aug 21, 2022 at 20:45

5 votes

Accepted

Find a more elegant explanation for the sequence 01, 10, 13, 20, 25, 30, 37, 40

answered Jul 3 at 19:08

4 votes

Put a number on both sides

answered Feb 8, 2023 at 20:52

4 votes

Who stole the cake?

answered Sep 29, 2023 at 3:58

4 votes

Accepted

Confused by a Leningrad Mathematical Olympiad question

answered Jan 23 at 9:03

4 votes

Seven birds in search of food

answered Feb 4 at 7:40

4 votes

How to get the numbers from 50 - 100 with the numbers 2, 0, 2, 4

answered Feb 7 at 11:22

4 votes

Design a magic trick

answered Feb 29 at 20:29

4 votes

Let's make a huge number with only tiny numbers

answered Oct 17, 2023 at 22:13

3 votes

Professor Rackbrane: Count the triangles

answered Apr 11 at 16:47

3 votes

Next term in sequence

answered Sep 27, 2023 at 4:51

2 votes

Rep Digit Palindrome expressed as a Unique set of Pan Digital Relations

answered Oct 16, 2023 at 3:55

2 votes

A fantastic puzzle

answered Sep 9, 2023 at 9:27

2 votes

How do you produce the number 5, using only 3 eights?

answered May 29, 2022 at 20:15

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42 Answers

Is this Hashi puzzle unsolvable?

4,4,2,6,2,10,4,_ sequence from 4th grade packet

Are there always 2 teams such that they have together defeated every other team

Make 27 using 1, 1, 1, 1

Move exactly two matches to make the two sides equal

Chem-is-try is hard

Interesting irrational number

Which positive integers have at least one positive integer multiple such that the base 10 representation of that multiple has only even digits?

VI or LVE, answer is half a dozen

Knights, Knaves, and Spies

Numbers that are averages of their digits

General attacking chessboard squares

Make the three products equal and as large as possible

Binary Grid Challenge and X & O Conundrum

The shady puzzle that will keep you in the dark

Let’s make a huge number with only tiny numbers (pt2)

How many digits can be removed from a division puzzle?

Find a more elegant explanation for the sequence 01, 10, 13, 20, 25, 30, 37, 40

Put a number on both sides

Who stole the cake?

Confused by a Leningrad Mathematical Olympiad question

Seven birds in search of food

How to get the numbers from 50 - 100 with the numbers 2, 0, 2, 4

Design a magic trick

Let's make a huge number with only tiny numbers

Professor Rackbrane: Count the triangles

Next term in sequence

Rep Digit Palindrome expressed as a Unique set of Pan Digital Relations

A fantastic puzzle

How do you produce the number 5, using only 3 eights?