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.

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14
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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
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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
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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
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1answer
146 views

Square Image - Sifr wa Wahed - Gol va Keleed

Title is irrelevant, but here's a simple puzzle I made...
4
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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
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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
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2answers
449 views

What could it be?

What could it be? Hmm... Try complete the picture! Hint1a: Hint1b: Hint1c(strong): Hint1d(stronger):
9
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2answers
2k views

Picture puzzle… Replace the “?”

Below is a picture and your task is to replace the question mark!
3
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1answer
285 views

Circle Puzzle… Replace the question marks

Try replace the question marks in this picture! Hint:
5
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1answer
234 views

What letter am I?

I am representing a specific letter... what letter am I?
2
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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
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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
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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
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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
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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
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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
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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
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1answer
338 views

DOTS… What am I looking for?

Dots, dots, and more dots. Try to figure out what they represent.
9
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1answer
335 views

Complete the picture

Below we have a set of strange squares. Try complete it!
5
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3answers
473 views

Winter is coming

Holidays aren't far, I hope. Source: myself
6
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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
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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
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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
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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
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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
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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:
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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
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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
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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
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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 ...
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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∆ = ?
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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
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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
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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
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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
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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
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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
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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.
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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
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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
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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
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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
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2answers
227 views

What is the hidden passcode?

The passcode is hidden in these sequences of numbers. Can you find what it is?
27
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1answer
420 views

Iceberg Cryptography

See if you can extract the message encrypted in this text box: ...
3
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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
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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, ...