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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7
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1answer
41 views

Such a simple task!

"Gosh-darn-dag-nab-it-to-tarnation!" Jimmy hear's Darlene yell from across the farm. Figuring he'd better go face this head on, he heads towards the barn. "What the hell happened Jimmy? You were just ...
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An American Friend Cipher

An American friend of yours, JL for short, sent you the following message: "I can only say that 22. 21. 24. 21. 9. 3. 6. 9. 27. 2. 23." The hint says the key may be in the initial part of this ...
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1answer
89 views

Find the location of the royal artifacts

London, 13:20 While media and experts are still baffled on how Inspector Arbor caught Norman Erdmann (can you solve it? See here) Arbor himself has no time to rest. Police has already questioned ...
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92 views

Solving A Numeric Cipher Where Numbers Replace Letters

I think this code is my masterpiece- let's see what you think: ...
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371 views

Need to solve this

I got a puzzle to solve from the guys at my stag party; and I need it solved by my wedding (next Saturday). I spent hours looking at this but I can't find the solution; can anyone help me? I got a ...
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1answer
412 views

A Coded Message

One occupational hazard of the detective business is the paranoid client who is certain his every move is being watched. As a corollary of this, I have received a rather large number of coded ...
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266 views

The Vatican Relic Heist

Deep within the catacombs of Rome, we discovered a secret entrance into the catacombs beneath Vatican City. Upon further exploration, we discovered a great vault. On the massive door of the vault is ...
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1answer
160 views

Decode this message:

Gongs. Achtung! 16324 Trennung 28, 16324 Trennung 28 95220 27182 42355 04528 41268 85136 75910 93275 41209 45460 25239 06265 19939 17512 39694 83952 03747 33998 37518 73308 24473 53061 85975 08947 ...
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Help required stealing Christmas presents

Archibald, Beatrice, and Chrysostomus were finally at the end of their journey, at the entrance of the much sought-after room. To get there, they already had sneaked past the guards, crawled through ...
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1answer
599 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... ...
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621 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 ...
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1answer
164 views

Square Image - Sifr wa Wahed - Gol va Keleed

Title is irrelevant, but here's a simple puzzle I made...
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1answer
171 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 ...
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Complete this puzzle(the right way)

A circle and squares.. Try to complete this picture(the white areas) and explain why! Hint1a Hint1b
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2answers
459 views

What could it be?

What could it be? Hmm... Try complete the picture! Hint1a: Hint1b: Hint1c(strong): Hint1d(stronger):
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Picture puzzle… Replace the “?”

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

Circle Puzzle… Replace the question marks

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

What letter am I?

I am representing a specific letter... what letter am I?
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1answer
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Another picture problem

Another picture puzzle. Replace the question mark. Once again, the information needed is there. So, try replace it!
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183 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!
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174 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 ...
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182 views

Visual calculation puzzle

Below are some objects and numbers. Try figure out what they represent and finally replace the question mark.
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1answer
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Quit scrambling my keyboard!

It happened to me again! More scrambled, this time. ncb , r2u 3b,99 bn/c b72b ic326c
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1answer
235 views

COLOR-PUZZLE.2. Complete the picture

I have made another color puzzle. Try complete the picture. Edit made! Hint1: Hint2: Hint3(last one):
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1answer
119 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
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1answer
343 views

DOTS… What am I looking for?

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

Complete the picture

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

Winter is coming

Holidays aren't far, I hope. Source: myself
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1answer
291 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,...
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1answer
238 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. ...
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343 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 ...
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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 ...
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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...
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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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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 ...
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1answer
162 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,...
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170 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 ...
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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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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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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 ...
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1answer
118 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 ⁾ = ?□
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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] = ?
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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
309 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 ...
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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 ...
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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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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 (...
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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 ...
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1answer
147 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
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1answer
192 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). ...

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