# Questions tagged [cipher]

A cipher is a simple method of modifying messages to make them unreadable except to readers who know the key. Common ciphers are Caesar, Vigenere, Atbash, and several types of substitution cipher. Other ciphers include polygraphic ciphers such as Playfair and Foursquare and numerical ciphers such as Polybius and Nihilist. Cipher puzzles sometimes make use of data encodings like Morse, Binary, or Base64.

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### Maze-Jigsaw Fusion

Hello there, maze lovers! Tired of solving normal mazes? Here is a maze puzzle with a little twist: a jigsaw-maze! The circular maze has been divided into four quadrants and scattered, so that you ...
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### Puzzle from Pythagoras

Pythagoras wants to… If 1a,2b,20k,50v and 600x Then what is 100 10 1000 3 ? My original puzzle
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### Anyone Seen My Snorkel?

This is part 54 of the puzzle series Around the World in Many Days. Each part is solvable on its own. mqoı ugw7qж , zqv qw o h6ım v6ınɔ ugwo7 | zo 78վn £þxm εıqm conxnøqxw v8կox h6ımw , დnɔ þn 7დvn ...
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Transcript: ...
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### World Puzzling Competition #2: bobby's transformation

Previously: This year, you were invited to attend the WPC, otherwise known as the World Puzzling Competition. The organizers also seem to suggest that there will be a 50 reputation bounty for every ...
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...
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### A QWERTY-based keyboard puzzle [closed]

There is a puzzle and clue. Answer is one (real) word only. Riddle: dtqrgvl Clue is: qwerty based keyboard
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### These words are for you alone

Can you decode the message this tablet contains? Good luck! Note: The knowledge tag is by no means necessary to solve this puzzle, but certain knowledge could be helpful in verifying the answer. ...
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### Never seen a 17 by 25 grid before? Well now you have

SNY.SMARTIE.ISDROPPEDONTO.AFRICTIONLESS.PLANE.WITH.NEGLIGIBLE.FRICTION..UPUPUPUP Hint:
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### More than a 10x10 grid?

Knowledge of my previous puzzle is helpful but not required. Transcript: ...
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### You can't play tetris like this!

Transcript: 98TPO.D4Q7 RIFZ78JAPM 50.TS.S25U N7.JU66A9N 2D742G89H2 60.N1ERT81 88D4DBSER2 T.3NAT4TI. .9U6HY8.S2 636W1Z623R Note: OP messed up the orientation of a ...
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### The S-340 cipher

Transcription: TIEICHJBEE EIHRONHOOY YTRNISNGAP NEDHRTSTTS HTGYAEOEIP NSUEAEOPWR SDMZPCSUUA ZYAEYZZKOE INZTRDFLLX SNYSMARTIE Hint: Partial solutions and ideas are ...
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### Simple Coordinate Puzzle with extra secret word

PETARM TUDTOH EOZRAT NYFZHY NEKILP KSSONE 23SW242N355W436SW436S432SE211SE6 ¡∞„¢£§Í„¢¡¡Í´§¢£˜´¢§¢´£™¡Í´™™¡Í£ Partial answers ...
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### Lucas's interesting cipher

Lucas was fooling around with some letters when he encoded some text into Gsobj lwmtkd sbceugb vfy rgdjb.. Can you figure out the original text he had?
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You are a mom (or dad) with two boys, Stephen and Philip, aged 8 and 10. While you have been out in the garage, they have been in their separate rooms doing their homework before being allowed to play....
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On this quiz, 005227 encodes the name Abby and 716123863 to Taylor. The key has something to do with encoding each letter as base 3 (c=010) and then writing the numbers in a column and reading down. ...
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### PSE Advent Calendar 2023 (Day 12): A peaceful tree

This puzzle is part of the Puzzling Stack Exchange Advent Calendar 2023. The accepted answer to this question will be awarded a bounty worth 50 reputation.< Previous Door Next Door > I wish you ...
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### Snailfence: Deciphering puzzle

The following text describes the method used to encipher it. Ssatnntloe-lree-itgaiima-t-odto-tl,hchaenisoa-a-oitnpsnefenf-p-coigtlxilon--letdnrhitC-iar-ae-reamralcppi-pttfp-dpt-ehrneWeaet-oet-nscewee-...
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### Lyrics from a P!nk Song?

The subject line is a clue, but you’ll need to find where. Additional clue: look up. Or down, maybe. I have to admit the answer isn’t very rewarding. Sorry about that; it’s more a proof of concept ...
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### What next step could I take to solve the Dec. 4 cryptoquote from the Wisconsin State Journal?

So as you might or might not know, I enjoy solving cryptoquotes (also known as cryptograms), and sometimes get stuck on them. Here is today's cryptoquote from the Wisconsin State Journal: ...
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### Decode the ancient prophecy

A team of archaeologists has discovered an ancient clay tablet. They understand the script it is written in, and have transliterated it to the Latin alphabet, but they do not understand the language. ...
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### How to solve the Nov. 29 cryptoquote in the Wisconsin State Journal?

apparently the cryptogram tag is a tag synonym for cipher so I guess that's what I'm using So recently I have been trying to get back into solving the cryptoquotes because I used to enjoy doing them. ...
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### The FBI needs your help with this Zodiac killer message

During a recent thorough cleanup round at the main building of the San Fransisco Chronicle, an employee found a piece of paper stuck behind an archive closet in one of the many archive rooms. Her ...
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### 'SILVER' -> ‘LESIRU' and 'GOLDEN' -> 'LEGOND', so 'NATURE' -> what?

I found this problem in an Indian Highschool Reasoning Olympiad. (image) If 'SILVER' is coded as 'LESIRU' and 'GOLDEN' is coded as 'LEGOND', then in the same code language how 'NATURE' will be coded ...
1 vote
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### In a certain code 'NATIONAL' is written as 'JUBOKZMN'. How is 'ELECTION' written in that code?

In a certain code 'NATIONAL' is written as 'JUBOKZMN'. How is 'ELECTION' written in that code? (A) FMFDSHNM (B) DFMFMNHS (C) DMFMFHNS (D) MFDFHSMN I really tried many basic methods using positional ...
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### My first attempt at creating a self-referential cipher

I recently made a self referential cipher (meaning that the key is the same as what is being decoded) a while back and was planning on putting it on here after making the cipher a bit more difficult. ...
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### the flute section keeps passing notes

(_ˇ෴ˇ)_⟋ 🎵🎶 (づ🪈◕‿◕ )づ日 ٩(◕‿◕)۶🪈 The band director is tired of the flutes passing notes in class, but he can't tell what the notes say. Here is one of the messages. 2 10 - 1 2 3 10 - 1 2 10 - 1 ...
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### phonetic encryption [closed]

0x09f 6 Wilhelm Paula 67dsa7 Friedrich Josef Gustav Toni Caeser Dora Gustav Oh762d. and Joseph 78sada Paula Ludwig Friedrich Joseph 67das 7d Tony 87h677 Dora Gustav h7f ehfs. Ox 786 bds7fds Paula ...
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### A fun and simple Nonogram... ...with a cipher

Goal of this puzzle: Find the hidden message in this Nonogram that I created. The puzzle: play online Hint:
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### see/// ,sm. upi eo;; gohitr yjod piy/

see/// ,sm. upi eo;; gohitr yjod piy/ Did you solve it? If so, post your answer below. Go solve it! It is really easy. It is a common secret language. (Not really secret though.)
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### A Squared Cipher

While looking for squares, I stumbled across these numbers, which seemed to form a message: ...
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### A 10x9 Hidato puzzle with a cipher

rot18(A se zgfwkldq jwsddq tsv sl ujwslafy hmrrdwk kg zghwxmddq sl kgew hgafl A sulmsddq kzgo aehjgnwewfl dgd) You might note that something is off about the following Hidato puzzle. Well, I guess in ...
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### Finding solution from reading computer language puzzle [closed]

How to improve this puzzle? The task is to find a result, like a number from 1 to 10 from reading and understanding code. For example: ...
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### Decipher this sentence, written in an original cipher

What does this sentence say? What manner of speech does it represent? I can safely declare that this cipher is entirely novel: Understanding this writing system does not depend on knowing any ...
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### help? weird bug [closed]

hey stackoverflowers im very new to html so if one of you could give me a pointer on what went wrong here that would be really helpful. im trying to make an online⠀order⠀site but something happened ...
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### But do puzzles really need visible or even highlitable text to be a good puzzle?

$\color{white}{fillertextsigh}$
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### this puzzle is based

This message is a basic numeric substitution cipher. The key is the standard, regular alphabet in the correct order (ABC...XYZ). Here is the message: 3 16 15 7 20 1 22 23 13 1 22 10 16 15 21 27 16 23 ...
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### Animal Farm and the Porcine Penitentiary

It's a disaster at the farm! Overnight, some nefarious individual has stolen an animal. You're not sure which animal, but you're sure that when you went to bed there were ten, and now there are only ...
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### The multi-layered multi-layered puzzle competition Part 1/11: February 16th, 2013

This is Part 1 of The multi-layered multi-layered puzzle competition, a 11 part puzzle hunt. Each part is solvable on its own, with the exception of the meta-puzzle at the end Note: This is entirely a ...
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### My smol boi puzzle! :3

It should be noted that all this puzzle intends to do is give the second half of the answer to my first puzzle, while being a puzzle itself. Other than that, this is just your normal smol boi puzzle :...
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### A simple and quite fun cipher: Redux

Previous ungood creation here Attribution to: Me :) Also sorry for all of the rot13("zrzrfcrnx") per se. I'm just trying to include a bit of a "humor" element into my ciphers. :) ...
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### A simple and quite fun cipher puzzle

Don't worry, this is my creation :) Goal of this puzzle: Decrypt the puzzle to find out what the secret (final) message is. Each part of the puzzle depends on the previous part (except for the first)....
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I picked up the English-language version of the popular tabloid Bild von Affen, and was surprised to see this headline. What does it mean? 1 69 39 64 13 71, 　 46 27 6 12 61 33 　 7 74 32 24 44 47 　 25 ...
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### An anagrammed logic puzzle!

ot rleow utbrctsa aacpilt hwti dioiatdn het ryuo s-bcBPEFfJDfeFmksmPOkChDhrgBqjD-i---ffeNB
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### A sudokey and 14 messages

This puzzle is part of the Monthly Topic Challenge #15: Multi Puzzle — two (or more) puzzles in one. Remarks: Feel free to post partial solutions. This is a multi-puzzle: If you found the titular 14 ...
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### Cheese from Denmark

You'll need "cheese from denmark" for this cipher puzzle. Denmark Portugal 1/2 France "hello" ?AI EBOM AEEDY EHT SEOU EPNHS TNHG OS EPNHS "F" AN AI SEBOM SSEHÆ AI ...
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### The Mono-Quantum Condrum

You are presented with a locked box, and on its surface, you notice a sequence of peculiar symbols: ⌬ ⌅ ⊙ ⊡ Next to the symbols, there's an inscription: ...
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### Good cipher with a "password"?

I'm starting to create a puzzle, but I'm going to need a cipher that will be impossible (or at least very difficult) to crack, but can be easily decoded with a key. I first looked at the one-time pad ...
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### #TenderfootSpiral

Clues: Two hikers on an incline arrow with numbers. Hiker 1 says: 38.548493. Hiker 2 says: -105.998749. Sequence: Hiker 17711 Hiker 0 377 0 144 1 10946 233 987 0 2584 6765 75025 Hiker = ...
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