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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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need help deciphering this message. will venmo [on hold]

I need help deciphering this message: oaaoh dd c oamxhpa ybwi. yodt ao No other hints or clues were available and I need help deciphering it ASAP. It should be a message once fully decrypted.
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0answers
71 views

Looking for Cipher Help

This cipher has me vexed. FOOTOOLTLTLBDCLOLTLTJBFTOCFTOOOCDC. There appear to be too many Os(and no other vowels) to be a transposition cipher. The coindidence index is 14.75, which is quite high, ...
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2answers
113 views

What a strange program

My friend told me about this program he installed recently. It seems very strange. I don't know how it works, it's just a prompt with a welcome message which shows some messages. Here are the ...
3
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3answers
288 views

A puzzle about 13

Round 1: Only thing you need to do in this round is solve the cipher, you'll need 13 along the way. The solution will guide you the the next round. ...
29
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1answer
2k views

Top ten best ways of transportation

This is an entry into the Fortnightly Topic Challenge #41. Last night me and my friends had a fun night at the bar. When it was time for us to leave, we couldn't come up with a transport that will be ...
11
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1answer
167 views

The 2 terrorist chatroom cipher

you are finally here! We need your help, a group of terrorists have been talking to each other on their newly developed "HackerChat" app and we think they are up to something. Here are the logs: <...
3
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1answer
62 views

Deciphering Old Runes (or: What's The Program?)

Some background: I was going through some old photos of mine, and I came across old doodles I had made during algorithms class (while getting my bachelor's in computer science). I remember these ...
3
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1answer
77 views

A Friendly Challenge Cipher

I have bought a game card for a friend for his birthday. One of those cards that comes with a code that you enter for in-game currency, but I can't just let him have it without messing with him a ...
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1answer
61 views

What type of code is this?

Xijtqfs, eje zpv hfu ju? Zft Cptt. If epfto'u lopx ju't hpof. Hppe, Xibu bcpvu Kbnft boe Iboobi? Kbnft jt bmsjhiu, uibu ofx Tibqf-Tijgujfs Qspupuzqf jt hsfbu. Iboobi jt opx cfjoh dpmmfdufe. Hppe, uibu'...
13
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4answers
602 views

A cipher for people who don't normally enjoy ciphers

I've never been a fan of ciphers/encryption. Truth be told, despite my love of puzzles (and the amount of time I spend here on Puzzling.SE), I'm just no good at them and haven't properly learnt the ...
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3answers
163 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, 12, 13 W=38 The only tips I ...
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2answers
164 views

Where did my uncle go?

That damned uncle of mine! Running out without telling us has become too commonplace in our house. I did manage to find these two nonograms and a note this time though. "Fear not nephew! I am ...
5
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2answers
208 views

Cipher: No idea where to begin [closed]

Ok so I have this cipher which I have no idea what to do with. I have tried most substitution ciphers I know of and still have no idea. Brute forcing with frequency analysis also yielded no results. ...
6
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2answers
323 views

A hexagon cipher

Note: This question looks like spam, but it isn't. All the "spamminess" is intentional and crucial to solve the puzzle I have received an email and this was attached to it: What does this mean? ...
5
votes
1answer
269 views

Election Day is upon us!

Some election mayhem! Any puzzlers here or regulars excited? This is a picross or nonogram, for information about it and how to approach, please go here. Wanted to make my first short and easy ...
16
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4answers
3k views

To Squanch or not to Squanch: That is the Squanch

I've been thinking about Squanchics (how we Squanch words) and language in general. I really Squanch that it matters not if Squanch uses words we are familiar with when they are Squanching or ...
6
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3answers
192 views

Close encounter of the orthographical kind

Over here! Hey! People! Thank goodness. I managed to escape. I was held captive in a Keerg spaceship hovering high above the continental United States. They pointed on different places on a map and ...
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1answer
107 views

Horror Episode #2: Not So Well

You get a call from an old friend to come to a pavilion in the woods that you and him camped out at as young teenagers. The reason being is that there was a well put in place a few months ago there. ...
6
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1answer
337 views

I have a puzzle and a solution… it's the method I'm after

The cipher message is: J B A Z R X K Z N T W K O Y E Z The answer is: T O N G L A N D B R I D G E How did I (or more accurately my father) arrive at the answer?
6
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2answers
454 views

I love baking, do you too?

I love programming, it's so fun Just get every computer in the world And just do program as much as you can Because with everyone on your side you can never go wrong with programming And no, ...
12
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1answer
216 views

A Spooky Encryption

The following message has been encrypted using a total of 6 different methods. Can you decipher the original message? E8EBB8E8B8BB02B8BA8EBA3AA05DDC5717475DC75D Hint for First Step: Hint for ...
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4answers
1k views

The strange encoding

Good luck trying to solve this riddle. ...
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3answers
124 views

Find the well-known Christmas song

14 25 15 9 3 7 2 6 4 7 2 9 1 1 14 25 15 9 3 7 2 6 4 7 2 9 1 1 2 15 26 19 1 4 16 1 7 4 9 1 7 14 8 5 25 15 4 5 13 3 5 13 14 25 15 9 3 7 2 6 4 7 2 9 1 1 14 25 15 9 3 7 2 6 4 7 2 9 1 1 2 15 26 19 1 4 16 1 ...
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0answers
129 views

Stuck trying to figure out a hidden message

As part of an ongoing "treasure hunt" in an online game that I take part in, there have been several forum posts made in an attempt to hint the participants to finding certain locations. However, ...
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2answers
312 views

The “foo” encoding

This puzzle has been solved. Please skip to the bottom of this question for the answer. Introducing the mysterious foo encoding... based on the common computer programming template variables ...
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87 views

Puzzle on encoding of a word [closed]

In a certain code, AFZALPUR is written as BCBGYVOS What is the code for FARIDKOT? As per my attempts so far, I cannot find a definite sequence of encoding. Both A and Z appear to be encoded to B, ...
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1answer
148 views

What does one do to decrypt this?

'Encrypted': 10101110001011101000000001110111000101011100011101110000000011101110100010111000111010111011100 Context: This is simpler than you think. So simple the solution to this problem would be ...
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1answer
192 views

The Research Paper

So, one of my friends is a teacher, and, for one of their recent assignments, one of the teacher's students turned in this: hkszocukgdxkcmvkuhgcskflfpnwebqhttbxhpwokywiyevvfohlgzqklw 6n1 ...
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1answer
140 views

Royal Delivery Service

I am at loss. Of the memory! I remember that I was running with an errand from the King, that I had to take a certain item from the treasury and deliver it to a certain person in the kingdom! Yet ...
3
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1answer
136 views

Puzzle Dungeon: Floor 3

Puzzle Dungeon Floor 3 is here! Previous Floors: 1 2 One rule that I forgot to clarify earlier (but worth clarifying now) A normal passage or door will not take you to a room on a later floor. ...
5
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1answer
153 views

Puzzle Dungeon: Floor 2

After bravely circumventing floor one of Puzzlandia's dungeon and descending the staircase, you find yourself in room $2^4$, or $16$ (as the staircase said.) Items you have: rusty sword (+1 ...
8
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1answer
292 views

Puzzle Dungeon: The Intro

Inspired by this puzzle that I found by looking randomly at the top-voted puzzles up to page 7. Don't question it. In the magical land of Puzzlandia (I am very creative at making up names), there ...
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1answer
94 views

Excited Raichu vs the Dream (Chess Puzzle)

(Source: An actual tournament game I played all the way back in 2016) I had the weirdest dream last night… It started out normal enough, which for me, is basically nothing… but then I woke up, ...
9
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1answer
238 views

Word that Stands Out Clear

I have a message in a very new kind of question page a way to find it is to look closer at the word that stands out clear a way to learn to remember to find help the reverse cipher will ...
7
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1answer
149 views

An extraterrestrial threat

HEY! Hey there! At last I've found someone. I have an important warning for you. There isn't much time. Do you remember the ships that came by? In the sky? We thought they were just taking a ...
6
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2answers
249 views

Michael Myers left me a note!

I came back from my run the other day and found this note left on my kitchen table. It was a terrifying experience when I learned it was from the masked psychopath Michael Myers himself. I really don'...
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1answer
142 views

More Email Shenanigans

I don't know how these people know my email address, but after the (still unsolved) shenanigans of the Interesting email I received? I got... yet another email. This one was of a Google Drive document ...
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1answer
152 views

Mr. Fontsy Pants

I asked a graphic designer friend to look over a draft of a job application I'd put together. He looked it over and quickly said, "There's one big thing wrong with this." I asked what it was and he ...
4
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2answers
373 views

Encrypted Puzzling Poem

Zugvi gsrh ormv, ivzw gsv mvcg gszg rh lww, Evib jfrxpob, svzw gl gsv ormv gszg nvzmh gsv kivurc jfzw, Tllw! Blf'iv xzgxsrmt lm, uiln sviv gl ormv hrc, Vevmgfzoob blf'oo urmw gsv nrcvw zxilhgrxh. ...
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3answers
520 views

Interesting email I received?

This email recently arrived in my inbox. I don't know how it avoided the spam folder, but it must be important. However, it looks like a dictionary in a blender... you'll see what I mean when you read ...
9
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3answers
343 views

An unfortunate Roman or a tasty Earl?

hqtfsylnwtfsyxz, ftqbq mnjxw js, jjf hqmj yqynjywy q, xbm tfzuquij fswt, f wwjj fditdz? wyfmhjj jysti , 'nhimj xh ttrkn srlf w, xwj jknwsnljdstiz? xsu wyjmfnih pnqyd t, fji ix ...
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1answer
105 views

My fifteenth puzzle. And it's perfect

You know those people with 'brilliant' logic that you just can't argue with? Example: Jackasses have long ears Carl is a jackass Therefore, Carl has long ears Well, here's a puzzle for ...
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2answers
587 views

An old man told me a story at lunch

Today I took my lunch break at my normal time, and sat in my usual location to eat. Nothing special, just a salad with tomatoes, swordfish, and tuna. While I sat there eating, and reading my book; an ...
19
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3answers
438 views

An Odd New Technology

Since it's Friday, and I'm really looking forward to the weekend, I've created yet another riddle for everyone to try and solve. The Puzzle I was in my chemistry class the other day, and I noticed ...
4
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5answers
986 views

What is the code? [closed]

You have a digital safe you need to unlock, but you forgot the 5 digit code. Luckily, your friend, Ben Dover knows what the code is. But he won't just tell you, he gave you a single clue to start off ...
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2answers
269 views

Ready every count until raspy seers inure oaths noble

Entry into Fortnightly Topic Challenge #38: Reusing Information 1 I'm hoping this fits into this. Right is a just cause, or a just cause is right. Every day should be happy, or happiness should ...
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1answer
99 views

A Puzzle Consisting Entirely of Reused Information

In the spirit of A Puzzle Consisting Entirely of Random Anagrams, I decided to make my own puzzle. informatiinformainformatinfinforminfoininininformationinformainformatiinformat ...
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2answers
118 views

A hidden puzzle link

I have left you a line to a puzzle below this sentence: WKLVLVDUHGKHUULQJORO So? What are you waiting for, go! Hint: Second Hint:
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2answers
177 views

The riddle of no sense

Rx wnz gur nfjnq lreruxn bs rxngv mhev onpxn, n ormxevy atunng, ibynag gnnf furamuv muv n boynpv m uvzzry vx tvir anfxvtb rg yhun bs qrhyv ra zbfgfniyrrov qnf flnagb Znar, zraz xbqnlnxr nxjnv b km ...
11
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4answers
497 views

Unlooted Invasion

I suspect someone broke into my house last night. Nothing was stolen of course, I would have went to the police otherwise. The reason for my suspicion is a note that I found just beside the door. ...