Questions tagged [cipher]
A cipher is a simple method of modifying messages to make them unreadable, but still possible to recover. Common ciphers are Caesar, Vigenere, Atbash, and several types of substitution cipher. Other ciphers include polynomial ciphers such as Playfair, Foursquare, etc.
1,376
questions
14
votes
0answers
225 views
Lost in Translation
You arrive on a foreign island, but upon heading to the local library, you find yourself unable to decipher the texts. You wonder what's caused this...
...
-2
votes
0answers
157 views
Solving an enigma
OQBA BQWG OZBF XSFX AIUF MIQE FGBE JEAJ UNLE QXTR ZEXL YFKJ LBQV XDRG N
My friend gave me this and said it was an actual message so I'm determined to find out but I'm not sure how to crack it. Anyone?...
27
votes
1answer
468 views
Is there a code in this painting?
This was posted in a Facebook group yesterday. It’s also made the rounds on Reddit but all of the commentary seems like scattershot speculation so far. From the post:
This is a painting done my ...
4
votes
1answer
146 views
Square Image - Sifr wa Wahed - Gol va Keleed
Title is irrelevant, but here's a simple puzzle I made...
4
votes
1answer
160 views
SoIve this cipher, please [closed]
Solve this cipher, please.
24/12 is coming so 25 24 18 25 27 18 25 26 18 27 29 18 26 23 18 26 45 18 26 42 18 26 27 18 25 21 18 23 22 18 26 28 18 27 29 18 26 21 18 25 28 18 24 45 18 23 20 18 26 22 ...
7
votes
1answer
431 views
Complete this puzzle(the right way)
A circle and squares.. Try to complete this picture(the white areas) and explain why!
Hint1a
Hint1b
4
votes
2answers
449 views
What could it be?
What could it be? Hmm... Try complete the picture!
Hint1a:
Hint1b:
Hint1c(strong):
Hint1d(stronger):
9
votes
2answers
2k views
3
votes
1answer
285 views
5
votes
1answer
234 views
2
votes
1answer
96 views
Another picture problem
Another picture puzzle. Replace the question mark. Once again, the information needed is there. So, try replace it!
5
votes
1answer
177 views
Picture-Problem
Here is a picture problem, and the task is to replace the question marks. All the information needed should be there. So... try figure it out!
2
votes
1answer
161 views
Hiker's Cabin Mystery | Pt. XVII
Sorry for the long break everyone! It's been hectic. Here goes XVII:
There is another chamber of the labyrinth which contains yet another inscription on the wall:
Once again, there is a keyboard and ...
2
votes
1answer
169 views
Visual calculation puzzle
Below are some objects and numbers. Try figure out what they represent and finally replace the question mark.
3
votes
1answer
121 views
Quit scrambling my keyboard!
It happened to me again! More scrambled, this time.
ncb , r2u 3b,99 bn/c b72b ic326c
2
votes
1answer
228 views
COLOR-PUZZLE.2. Complete the picture
I have made another color puzzle. Try complete the picture.
Edit made!
Hint1:
Hint2:
Hint3(last one):
2
votes
1answer
117 views
Keys have been shuffled, boards turned
Some person decided to mix up my keys, and I forgot where my letters are.
Fqji.br.hqrcu;wa-.'ubquvq.'zw;cjqa.ye
4
votes
1answer
338 views
9
votes
1answer
335 views
5
votes
3answers
473 views
6
votes
1answer
279 views
Density-type puzzle: Having A Good Day?
Here's another Density puzzle. I've got to say, I really like making these. Part of this is pretty simple, and part of it is much more complicated. Let's see what happens! Here it is:
Solution: (3,1,...
8
votes
1answer
232 views
Mapmaker mauled by mace meets meretricious monk
After abandoning my job as a researcher due to a pirate attack, I've taken up a job as a galactic cartographer. To support my craft, I've made it my business to explore whichever galaxies I can. ...
11
votes
1answer
331 views
Density-type puzzle: Is This Too Difficult?
After seeing some of the puzzles that other people have made, I decided to try making one of my own. I especially like the idea of Density puzzles, invented by @Dmihawk. This is the first puzzle I've ...
10
votes
1answer
287 views
Hopscotch Cryptograph
With a little squinting, you should be able to discern a message which runs from the top to the bottom of the text box below. (I have indicated the column with a little arrow.) That is the visible ...
7
votes
2answers
610 views
Missing word! What word am I looking for?
What word am I looking for? Try decipher the following:
((CZ18172612)⁺¹)=_____?
Edit; Gary S was very close, but here's a hint...
7
votes
1answer
196 views
Images and mysterious numbers. Replace the question mark
Below we have some images and numbers. Try replace the question mark.
(▭, ∆):(1147125)::(🙌, 🛸):(198916)::(🌆, 👑):(152314)::(🔥, 🥩):( ? )
Hint:
1
vote
0answers
173 views
Zed's E-mail: My Good Ol' Uncle Sugar
My friend Gabby and I constantly look out for each other. Just the other day, she received a strange message from what I thought was an uncle of hers. "Problem is," she started with a worried look, "I ...
3
votes
1answer
160 views
Letters and numbers… Replace the question mark
Here's some letters and numbers. Find "?"
(S,V):3::(U,K):16::(T,F):5::(L,K):5::(M,W):1::(I,O,M):?
Hint1:
Hint2:
Ok, this is a minor give away,...
4
votes
1answer
168 views
A Coldport Christmas puzzle
Detective Inspector Playfair, an energetically boisterous policeman who often complained about Endeavour Morse having his own TV show, was sat on a bench at the side of Coldport's newly laid town ...
0
votes
1answer
67 views
Encrypted text related to murdered Scottish king or queen [closed]
The following image should lead to a 4-digit numeric code.
The hints given were as follows:
and
I've made some progress, but I have no idea if it's in the right direction, so I don't know if I ...
1
vote
2answers
183 views
If these equals… then what number is “?”
If,
7∆ + 11□ - 2□ + 1∆ = 36
12∆ - 8∆ + 8□ + 2∆ = 25
3□ + 17∆ + 5□ + 2∆= 289
then,
1□ + 7□ + 2□ + 3∆ + 17∆ = ?
1
vote
0answers
65 views
Input on a cipher? [closed]
So, I randomly stumbled across this cipher/code and I am pretty stuck and wondering if anyone had any input:
65706377 736D 797367 676B72687A67 74636D64 7161 B8B 78863B1F56468 767A796B 71 6C6E79657A ...
2
votes
1answer
117 views
Number missing! Replace the question mark
A number is missing. Find "?".
((13 19 4□)⁽⁷ ⁴ ⁻¹⁾□) + ((14 6 4□ 3□ 5)⁽⁶ ² ² ⁻⁴ ⁾□) + (4□ 13 12 5 23 5)⁽⁴ ¹⁰ ⁻⁷ ⁷ ⁻¹ ⁾ =
?□
7
votes
1answer
384 views
Number puzzle. Can you replace the question mark?
Replace the question mark.
If,
[5 22 5 14 19] 12 16 19 21 [[15 20 23]] = 65
then,
[[8 5 18 20 5]] 9 13 19 14 21 [14 14 5 9] = ?
2
votes
0answers
498 views
Decode this message to stop the destruction of Science!
An extremist religious organization called "The Redeemed Against Scientific Usurpation of God's Authority", or RASUGA, have converted the world's leading time travel researcher to their beliefs. Using ...
12
votes
1answer
307 views
Crack the $4$-letter word from the following figure
As said in the title, it's a $4$-letter word. I actually found this in my old notebook which I kept like two years ago. Most likely I made this once for my friends to decipher, though I don't clearly ...
8
votes
1answer
204 views
A puzzling Thanksgiving note
My uncle Fausto is visiting for Thanksgiving. He's very clever with riddles and codes and such, and so it was no surprise when I received a card from him today with a strange message on it. The ...
0
votes
0answers
182 views
While raiding a lost tomb the following script was found
While raiding a lost tomb the following script was found. Upon closer inspection it is evident that it is a cipher text.
The goal is to decipher the cipher by figuring out its key.
1
vote
0answers
144 views
What are sequences of letters/symbols for creating a cipher?
I have two gears with different numbers of teeth (20 and 10):
The small gear makes two turnovers, while the large gear makes one turnover only.
My idea is to use a large gear as an alphabet wheel (...
3
votes
0answers
291 views
Zed's Phone: Failure to Communicate
My friend Beto and I constantly buy things for one another. One day, he gave me a strange-looking phone and said it was my birthday gift (My birthday wouldn't be until 3 more months). He said he ...
4
votes
1answer
135 views
How to connect a chessboard and a cipher into puzzle?
Let's say you have (a) a chessboard with figures and (b) a text from a book. The figures configuration is the Cardan grille, https://en.m.wikipedia.org/wiki/Cardan_grille
When you put the chessboard ...
5
votes
1answer
190 views
Body Language, Perhaps?
You should be able to tell what I'm saying by looking at what I'm doing with my hands and combining the expressions on my face. Just be careful to mind your p's and q's (and your i's and j's).
...
3
votes
1answer
193 views
Three letters, one dial
You, a great scientist, is being held hostage by aliens. They want to test human intelligence and see if the human race is worth to collaborate with.
According to the aliens, if you manage to escape ...
1
vote
2answers
85 views
Encoded Morse Code Interception
A message has been intercepted in Morse code coming from one unidentified station to another, but the radio operators couldn't make any sense of it. Later, another message was intercepted. Here are ...
6
votes
1answer
467 views
Zed's Note: Famously Infamous
My friend Al and I constantly bicker. One time, he proudly boasted that he can crack any cipher ever written, so I put out a little wager: if I can stump him with any cipher I write, he would have to ...
4
votes
2answers
227 views
What is the hidden passcode?
The passcode is hidden in these sequences of numbers. Can you find what it is?
27
votes
1answer
420 views
3
votes
0answers
230 views
The Weird cipher password?
During your search to the ' great hidden computer virus ' , you realized that you are just a password from accessing it. Frantically , you searched for a clue that might help you . At last you ...
7
votes
1answer
228 views
Density type puzzle 2
Here's another puzzle of this type. Perhaps my next one will be complex enough to require the full $72$ x $72$ size.
Final answer: (5,2,5)
4
votes
0answers
112 views
Message for my club members
Two people in particular have come to my Codes and Ciphers Club almost every week. One of them is always expecting a certain message to appear in the weekly puzzles, so of course I can't include it, ...
