# 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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### The “Jumbled” Cipher

The elusive "Jumbled" cipher has stumped scientists and cryptographers alike... Not really, but it will stump you soon... The Jumbled Cipher is a mysterious text cipher that puts text into an ...
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### A Wacky, Wacky Chessboard (That Makes No Sense)

So yesterday I found this in the mail. A chessboard. But on the squares, things were written. Plaintext version: ...
583 views

### History Calls - Twice!

You'd send a letter to me, but I'm not quite what you think. You'd send a letter in me, but only if you didn't know me. I was a gem in my day for being both bold and precise. I stood ...
361 views

### Is it a word? Really?

Grandpa says: show that the following number equals a 5 letter word with multiple meanings (one of them not good) I I I X I I X I I X I I I X I I X I I I was wondering if that silly thing ...
152 views

### Mutineer's Treasure

Background: Your team has recovered a sunken ship. In the hold there is a small room that appears it was intended as a smuggler's room. In the smuggler's hold are three decayed corpses a bunch of ...
131 views

### This is my cipher

Solve the following: Ujlw oz vi ovdwui, Ncep hs ob xuuo, T'yz miamy hfid ujlw, Htu etr sqp eiic. Hint: Hint 2: Hint 2a: Hint 2b: Hint 2c: Hint 2d:
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### Help my girlfriend in finding the hidden message

I've been with my girlfriend, who's birth date is 20 February, for almost three years now. I would like to hand her a challenge with a crossword puzzle. (not really a crossword I think, but something ...
536 views

### Time for the Dessert!

The answer is one word. Hint 1: Hint 2:
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### Creepy video on Youtube, with secret cipher built in

This showed up in r/deepintoyoutube: https://www.youtube.com/watch?v=j1ExfbH4Jew I've posted it around, and no one has solved it. I believe it is a cipher for a couple of reasons, at the end 26 ...
190 views

### Just a Simple Number Crossword

I made a small number crossword for my mathletes club that I thought I'd share. It's not too hard, I think it's just right for a coffee break. Have fun! (Edit: No answer has a leading zero)
496 views

### A letter with no particular backstory

So, I was walking down the street when this paper materialized just in front of me, as if from thin air. I'm not sure if I can decipher it, maybe you can? It also smelled like fish a bit.
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### A fun series of riddles!

All of the clues will lead up to the key for a Vigenere Cypher: eutnn wo vvsf. Clue 1 (from www.riddles.com) I'm by nature solitary, scarred by spear and wounded by sword, weary of battle. I ...
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### Riddles and ciphers / All good ways to flex the mind / Can you solve my task?

I have arrived new / Here with ciphers for your eyes. / Can you solve this task? ...
984 views

### The Third Room of Numbers Dungeon

After being enslaved by the evil Lord Numbers, you have been forced to navigate his treacherous puzzle rooms. After easily defeating the first and second puzzle rooms, you stumble into the third room, ...
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### An Aklahp Mystery

You are a detective in the city of Aklahp, which has had some problems with crime in the past. It used to be just simple burglary or breaking an entering, but things have been getting worse recently. ...
95 views

The wall opened. Cyrus and T.E.D. got out of the room. Suddenly, the passageway started collapsing! Cyrus was terrified. T.E.D. grabbed Cyrus and quickly rolled out of the passageway. They got into ...
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### Geography at the pixel level

(enlarged version) The answer is a group of islands.
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### How to decipher

I received the following challenge as a homework problem. Not much info is provided with it, except for the word Decrypt! at the end. This problem is online on a password protected school site. So I ...
318 views

### Hidden Phrase Within Rant

Foreword: This is a puzzle. I wouldn’t read too much into it… unless it applies to you. Below is not what you might expect from a puzzle. There are no misspelled words, no hidden Morse Codes, no ...
194 views

### Can you solve this? Cipher I found

Here is the cipher you need to solve, it is an actual English text: ...
183 views

### Find the result of this dual key cipher

I came up with a neat little cipher that I'm calling the dual key cipher. The basic premise is that there are two cipher keys that, when used together can decode the cipher text against a given ...
473 views

### Oh boi! Dis waas never Engliz! #2

This puzzle is second in the series, the first one being this. But these are related in no way. Below are some weird combinations of letters, which are actually words translated in some different ...
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### Detention in 1997

As summer break is coming up, you have started to misbehave in school, getting sent to detention quite often. On June 20th, something interesting happened, and made detention a little more fun. You ...
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The robot's program started running. It twisted its head, torso, arms and legs. After a few minutes, it stopped twisting and vocalized a few sentences, "Hello master. I am T.E.D. and I am here to ...
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### Coordinated efforts

I was showing off my knowledge of obscure geography trivia to my father. He admitted he'd never remember all those details, but insisted that there was a certain other topic where nobody could ever ...
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### Unknown Cipher? [closed]

gX18gICAgIF9fXyAgX18gICAgICBfXyAgIF9fICAgX18gICAgICAgICAgICAgICAgICAgICBfX18gICBfXyAgIF9fICANCi8gX2AgLyAgXCAgICAgfCAgLyAgXCAgICB8ICBcIC8gIFwgfF9fKSAgL1wgICB8XC98IHwgfFwgfCB8X18gICB8X18pIC8gX2AgDQpcX18+...
568 views

### Invade the Pyramid if you Dare

Before you lies a pyramid, with a giant statue blocking the entrance. ...
111 views

### How to decrypt simple binary code to alphabet

Part of an alphabet is given by the code: This code is used by Fred to send a message home to his mum. She receives the following signal which includes a parity check digit on each word. ...
264 views

### A strange message full of dice came in my mail

So I got a package today that contained the strangest contents. It was a set of dice, each of them numbered in one of the corners. Arranged, this is what numbers or characters displayed on each dice, ...
430 views

### Jealous, Lying, or unAmerican

I opened my email today to find this odd image. I suddenly had a strange craving, which fortunately I was able to satisfy outside my local Starbucks—-I happened to be driving by literally as the ...
762 views

### How will you save Mike?

A direct hint: this question. Question starts from here: You are Dr. Nathaniel - a renowned archaeologist, and involved in a research about an ancient site. But, there is only one problem - the ...
778 views

### A deciphering riddle

Recently in class a computer science related deciphering riddle was shown which I could not solve. For the course itself it is not obligatory to solve it but I am interested in the topic and I wonder ...
470 views

### The programmer who loves dogs and puzzles

Your programmer friend, Daniel, went on a two week long vacation, and asked you to look after his adorable dog. He loves dogs, and he certainly doesn’t want a stranger to do this job, so you agree. ...
204 views

### Part of a challenge, from a group of adults, who break ciphers

I am part of a group of adults, a cipher club who like to decode random ciphers, from texts to symbols and other things. We were presented with a set of 5 ciphered text, and we have managed to crack 3 ...
358 views

### What in this world is she trying to say?

I happened to meet one of my friends after about a couple of years. Obviously we both were very happy, but still, she didn't leave her habit of challenging me to decipher what she was saying. I ...
386 views

### Where are they being held?

In my dream, some People asked me for help. They said I should wake up. So I woke up and there was this letter. Dear Percy We got caught and only you can help us. You've 60 minutes (try it ...
575 views

### The garden where everything is possible

An old man spoke to me today. He said: "A long time ago, I buried something very important. That was 20 years ago." After he said that, he gave me a note where it was written "Hyih Jbimjbilom ...
337 views

### I'm drawing a blank on my name, help me out?

I'm a wrestler, I know that because I just got hit over the head harder than I've ever been hit before. So hard, in fact, that while I'm trying to remember my name... all that comes up in my head is: ...
140 views

### Eight Sisters Treasure Hunt

Eight sisters don't guard the essential hoof This is from the game CreasureQuest, so I suspect the solution in context with the historical background (the lost treasure of the Flor de la Mar, Afonso ...
1k views

### Someone scrambled my calling sign- who am I?

Before I left the scene of the crime I left my calling sign... But on the news the next morning all that was left was the following: .Iaaabmmnt Which seems to ...
492 views

### Unlocking the dungeon door

Any feedback is welcome. I'm new to puzzling in general so please let me know how long it took you to come up with your answer and what your thoughts were. I have tough skin. Hint Hint 2
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### Silly Sally's Movie

My friend Sally and I love watching movies on Friday nights. This week it's her turn to pick a movie. Sally: "I won't tell you the name of the movie but I will say this: I love eating peanut ...
9k views

### The Beale Papers

The background to this one's given here. NB: These may not be a genuine cryptograms (current thinking is that these are gibberish); but I though it interesting to share these in case they're genuine /...
326 views

### What's my favourite book?

I got a strange message from a friend a few minutes ago: You wanted to know what my favourite book was? See if you can work out the answer. I'll give you a clue: Saranac Lake \United Which ...
232 views

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### Help deciphering number cipher

21,14,01:15,03,01:19,11,10,10:02,15,18,01:21,15:05,01,13,03,11,21,01:21,14,15,21,01:19,14,15,21:21,15,19,21:19,01,05,01:09,05,15,08,01,03:09,03:04,01,07,21,14,21:21,21,11,03,20 9,10,13,1 we ...
399 views

### Oh boi! Dis aint Engliz! #1

First some Engliz: These weird combination of letters are actually words translated in some different languages, and concatenated. Each line has one word translated in different languages. These ...