All Questions
Tagged with matches mathematics
26 questions
4
votes
3
answers
1k
views
an esoteric matchbox
Seeing a vast repository of matchstick puzzles, Professor Moriarty determined to create one of his own. Behold, his greatest crime yet, the best and worst matches puzzle to ever grace this earth with ...
- 610
11
votes
1
answer
903
views
Odd solutions are in 3d
This puzzle is part of the Monthly Topic Challenge #11: Now in 3D.
You are given a collection of sticks which are straight lines of length 1. Two such sticks can be attached to each other at their end ...
- 2,264
6
votes
4
answers
875
views
Paris and Wife Matchstick
Here are two matches dates that I hold with love in my heart:
The current sum is 1970 + 1997 = 3967.
You must requisition at most 10 matches so that the sum is "as big as possible". We will ...
- 6,518
22
votes
3
answers
1k
views
Complex Matchstick puzzle
This is my toughest invention so far, not sure if it's already been done but here it goes.
Move a single stick to obtain a correct equality. (To be clear: the stick needs to be moved and placed down ...
- 680
10
votes
5
answers
2k
views
Minimize 1×3 tiles on a 5×5 table to block any more 1×3 tiles
What is the minimum number of 1×3 tiles that can be put on a 5×5 table so that no more 1×3 tiles can be put on it?
Borders of a tiles are parallel to sides of the table.
It is 5 but I can not prove ...
- 890
5
votes
11
answers
2k
views
Matchstick Problem: Turn 1 into 12 by removing a matchstick [closed]
Below are some matchsticks arranged to display an expression.
Your task is to remove one matchstick so that the resulting value of the expression will be twelve.
- 13.2k
4
votes
2
answers
206
views
How many steps for matchstick-Lychrel numbers?
The Lychrel number is famous in the recreational mathematics. The process about the Lychrel numbers reverses arrangement of the previous number.
Mimicking Lychrel numbers, I would like to devise ...
- 4,219
5
votes
2
answers
1k
views
Move just one match
Make a correct equation by just moving one matchstick!
This is the source. Spoiler--source reveals answer.
user70797
12
votes
2
answers
596
views
What was Matt's matchstick puzzle?
Something rather funny happened at our Puzzlers' meet the other day.
"Oh hey buddy, can you hand me exactly 18 matchsticks? I wanna show you this new matchstick puzzle I came up with." Matt ...
- 20.3k
39
votes
7
answers
8k
views
9-5=5? Matchstick problem
Move one matchstick to make an equality.
Question made by me (Is this too easy?)
- 6,334
9
votes
5
answers
802
views
Move just 2 matchsticks to make three equally sized triangles
There are 9 equally sized matchsticks, move 2 to make 3 equal triangles
- 107
4
votes
10
answers
905
views
Matchsticks 9 + 9 = 8 [closed]
You are given the wrong equation (made out of matchsticks) 9 + 9 = 8 and you can move at most 3 matches. Your aim is to find all possible correct equations. Selected answer will be one that discovers ...
- 6,518
2
votes
15
answers
15k
views
What is ls Largest Number Formed by only moving two sticks in 508?
Tilting the Image is not allowed.
You can cannot change order of digits.
You cannot change the Size if Digits unless you are harry potter.
You can increase or decrease space between digits though.
...
- 255
15
votes
8
answers
3k
views
Matchstick Puzzles
Puzzle #1:
There is a matchstick:
|
Add 2 more matchsticks to make the number, 11.
Puzzle #2:
There is a palace made out of 11 matchsticks:
Move 2 matchsticks to make 11 squares.
Puzzle #3:
There are ...
- 705
4
votes
4
answers
539
views
The Battle of Puzzlings
I present to you...
The Battle of Puzzlings
Your task is to turn 'one' into a letter representation of 1066 (the year of the Battle of Hastings):
Rules
Fewest moves wins.
All matches must be used.
...
- 4,935
8
votes
6
answers
5k
views
Move a single match to make this expression true
Move a single match to make the following expression true:
So far I've found 6 valid solutions, can you find all 6? (or more!)
Edit: Lots of great, creative answers! All 6 I found are represented ...
- 199
7
votes
1
answer
2k
views
Move just 1 match stick to make the 2 equations right
Move just 1 match to new position to make these 2 equations right.
- 18k
8
votes
1
answer
1k
views
Matchsticks for lengths
You have been invited to an $n$-dimensional universe, where $n$ is an integer greater than $1$.
Here, matchsticks are idealised lines of unit length, and they can pass through each other.
They want ...
- 1,610
3
votes
11
answers
2k
views
Can you solve the following equation by moving exactly 3 matchsticks? [closed]
If yes, how? (every line is a matchstick)+--------- | | | +---------+
| | | | | |
| | | ...
- 1,253
8
votes
2
answers
959
views
A matchstick game
On the table there is a $9\times9$ grid made of matchsticks, so that each of the $81$ little squares is bordered by exactly four matchsticks.
Alice and Bob play the following game.
Alice and Bob move ...
- 45.9k
7
votes
1
answer
839
views
Smallest number of matchsticks for a 3D structure with 6 matchsticks at each vertex
Make an as small as possible three dimensional structure of matchsticks, all of which have equal length, such that the end of each matchstick meets exactly five other ends. A matchstick is not allowed ...
- 299
3
votes
2
answers
302
views
Find seven points so any three contain two of distance one
Choose 7 distinct points in the Euclidean plane so that among any 3 of those points, there are (at least) 2 that are a distance of exactly 1 apart.
- 28.8k
15
votes
1
answer
2k
views
Touching matchsticks with compass and straightedge
The question Touching Matchsticks asked for the smallest matchstick graph where every node is connected to four distinct edges. The Harborth Graph is the smallest such, with 104 edges connecting 52 ...
- 2,235
14
votes
3
answers
2k
views
Touching Matchsticks
You are asked to place matchsticks on a flat surface such that each matchstick end meets three others, and no matches cross. It is easy to achieve this for patterns that extend indefintely:
The ...
- 4,410
5
votes
4
answers
6k
views
What is the minimum number of matchsticks that you can use to build expressions having the following results?
Instructions
You have a bag containing infinite number of matchsticks all having the same cuboidal shape and size. Digits can be made using these matchsticks:
$0$ takes 6 matchsticks
$1$ takes 2 ...
- 1,823
17
votes
6
answers
2k
views
180 degree rotation matchstick equality
Several matchstick digits are still digits when rotated by 180 degrees:
Note that 2 is rotated to 2.
Thus, we can make a matchstick arithmetic expression which is valid when rotated 180 degrees. For ...
- 4,219