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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1answer
137 views

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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3answers
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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: ...
18
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5answers
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 ...
19
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1answer
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 ...
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1answer
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 ...
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1answer
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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1answer
818 views

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 ...
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3answers
536 views

Time for the Dessert!

The answer is one word. Hint 1: Hint 2:
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1answer
1k views

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 ...
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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)
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1answer
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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1answer
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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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116 views

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? ...
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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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3answers
309 views

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. ...
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2answers
95 views

Cyrus' Adventure (Part 7)

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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11answers
6k views

Geography at the pixel level

(enlarged version) The answer is a group of islands.
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1answer
510 views

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 ...
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1answer
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 ...
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Can you solve this? Cipher I found

Here is the cipher you need to solve, it is an actual English text: ...
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2answers
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 ...
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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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4answers
3k views

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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2answers
141 views

Cyrus' Adventure (Part 6)

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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257 views

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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135 views

Unknown Cipher? [closed]

gX18gICAgIF9fXyAgX18gICAgICBfXyAgIF9fICAgX18gICAgICAgICAgICAgICAgICAgICBfX18gICBfXyAgIF9fICANCi8gX2AgLyAgXCAgICAgfCAgLyAgXCAgICB8ICBcIC8gIFwgfF9fKSAgL1wgICB8XC98IHwgfFwgfCB8X18gICB8X18pIC8gX2AgDQpcX18+...
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1answer
568 views

Invade the Pyramid if you Dare

Before you lies a pyramid, with a giant statue blocking the entrance. ...
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1answer
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. ...
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1answer
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, ...
12
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1answer
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 ...
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2answers
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 ...
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0answers
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 ...
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3answers
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. ...
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1answer
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 ...
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1answer
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 ...
9
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1answer
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 ...
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1answer
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 ...
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2answers
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: ...
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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 ...
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1answer
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 ...
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5answers
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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2answers
3k views
17
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1answer
580 views

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 ...
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0answers
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 /...
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3answers
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 ...
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1answer
232 views

Bro's password… must've forgotten

My overseas friend has forgotten the password to his SackExpunge account, and the only information he wrote down about it was this: Username: LiveSound Password: ...
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88 views

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 ...
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1answer
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 ...
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3answers
352 views

Word Cipher with seemingly random numbers

I came across this interesting puzzle and have failed to crack it for more than three days. Can you solve it? m.imdb.com/title/tt2039338/ L=9, 20, [2x5], 6, 17, 13 W=38 The only tips I ...
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505 views

My Grandpa's Box #1

My grandpa died last month. At the reading of his will, he left me a strange wooden box. A post-it-note on the side read "You were always good at puzzles." There was a number lock on the front that ...