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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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Tic-Tac-Toe on a Rubik's Cube

12 friends decide to play Tic-Tac-Toe on the surfaces of an opened Rubik's Cube which looks like this: When closed, the orientation of this Rubik's Cube is as follows: Surface Colour Up White Down ...
chandanr777 's user avatar
0 votes
1 answer
87 views

Property of double H

It is the property of double H. It is a symbol of respect. It is attached to a moving thing. Solve for the missing codeword to know the answer. Number Part 1 Part 2 Codeword 1 Sawlog Member ALGEBR1 ...
chandanr777 's user avatar
1 vote
1 answer
233 views

Can you help me crack the code?

Being an assassin and a hacker, you have successfully infiltrated the base to steal some secrets. While cracking the code, you noticed a clock stopped at 6 p.m. and some strange numbers on the lamp ...
Chieller's user avatar
2 votes
1 answer
145 views

A sentence encoded as images

Decode a meaningful sentence from this image full of images.
chandanr777 's user avatar
3 votes
2 answers
282 views

Coded words of an old mobile keypad

Consider an old mobile keypad which looks like this. The words produced according to the codes typed on the keypad are as follows: Code Word 1* 17* 2* BACK 1* 145* 4* HIGH 0# 3568# 3# DEFT 0# ...
chandanr777 's user avatar
3 votes
1 answer
286 views

Musical instruments and their codes

Fill the empty cells under ONE, TWO, THREE and FOUR ONE Musical Instrument Code Ektara I5E6 Masenqo TWO Musical Instrument Code Erhu Gunjac C7G6 THREE Musical Instrument Code R6B9 Shamisen ...
chandanr777 's user avatar
7 votes
2 answers
641 views

WJDIRKGPZOG ZNFFLQHLXQNIWYINQQFIV

TJPGRROLZZNFSXMGLGDVMR MPNDUZXEHPGJIRXOSLVCHSCEGSCQDQMAZJSIDAVUOAKGNLVNGKKRNDVMUQ UAPRZGSIJGAZALKZX HRLPVDUQ FAYHTFSIALGEDGCLWV WLCCIWJ AAGOTSHGDPCPNHKZJMJZMAMBPPMRWNDKO There's a space between each ...
Someone's user avatar
  • 283
6 votes
2 answers
708 views

30 Days Hath September

This puzzle is part of the Monthly Topic Challenge #1: Restricted Title: xkcd 1xxx ... but what? Good luck on this enigmatic-puzzle! Hints: This puzzle is one of two remaining unsolved puzzles from ...
Cloudy7's user avatar
  • 1,942
4 votes
0 answers
193 views

Need help with cipher

I've been attempting to solve a coded message that someone posted to Twitter, but I can't crack it. I'm not even sure what kind of cipher it is. I believe it needs a key to be solved, but I'm not sure ...
Piers's user avatar
  • 41
4 votes
0 answers
411 views

My first meta puzzle (as I remember)

I don't have any comments about this question, all info are in the image. Hint 1:
IsaacRoan Sison's user avatar
21 votes
1 answer
574 views

Estimating T¡me

This puzzle is part of the Monthly Topic Challenge #1: Restricted Title: xkcd 1xxx The Oracle has been sending me some weird texts lately. It started a couple days ago and the last one came in this ...
caPNCApn's user avatar
  • 19.2k
5 votes
1 answer
512 views

The Grandfather Paradox

You are rummaging though your grandpa's old stuff and see an old PDP-8 with a note attached to it. On one side there is the following key combo:  Here is a picture of the characters (...
Seggan's user avatar
  • 210
5 votes
1 answer
266 views

What happened to your job?

It is 8 am and you are at work, solving a puzzle on Puzzling StackExchange when you get an email from your boss. The email is below: ...
Varun W.'s user avatar
  • 1,323
2 votes
1 answer
231 views

Word Arrangement Machine Problem

Input: All Indians Are My Brothers And Sisters Step I: 23 32 12 38 65 17 81 Step II: 30 70 41 156 328 104 568 Step III: 568 328 156 ...
InanimateBeing's user avatar
2 votes
0 answers
167 views

A tie knot algorithm puzzle

This is the actual way I memorize tie knots in life using just one "code word" for each. The four-in-hand knot has the code word BERT. Trinity has SRESITET. Eldredge has SESIETSAT. Can you ...
George Menoutis's user avatar
14 votes
1 answer
848 views

Is Daryl's Mail Legit This Time?

You are the lead mail inspector for a large prison. One of your jobs is to check all incoming and outgoing mail for any contraband and for any hidden information or codes, which are often of a ...
JLee's user avatar
  • 18.4k
4 votes
2 answers
461 views

Unclutch those pearls

Can you see the hidden gems in this string of pearls? Here they are: Now, in the same way, can you find the pearls of wisdom in this longer string? Text version: ...
SlowMagic's user avatar
  • 13.8k
16 votes
1 answer
1k views

The Cryptic Safe

EDIT 5/2/23 (originally 9/20/22): I have found a mistake in the puzzle, and have provided a note to help get through it. This mistake does not strongly hinder your ability to solve the puzzle, as ...
kaitlynmm569's user avatar
  • 1,309
9 votes
1 answer
484 views

Puzzle for Olivia

June 11, 2022 Dear Olivia, Over the past few months we've noticed that you've been spending all your free time creating and solving puzzles online. We are glad that you have found something that you ...
JLee's user avatar
  • 18.4k
2 votes
1 answer
141 views

The Lucky Number Seven... or is it?

While biking with your friend, you come to a fork in the road. You wonder why there's a fork in the road here, you don't remember seeing it before. Your friend and you decide to split up; you'll go ...
user avatar
-2 votes
1 answer
278 views

Don't decrypt this encrypted string

WARNING: Do not decrypt this encrypted string with a line of numbers. ...
khang2009's user avatar
  • 169
2 votes
1 answer
226 views

The Mystery Word

STEPS FOR SOLVING (READ FIRST): First, review the crossword puzzle and its hints. Next, solve each space of the crossword puzzle except for A10. When you are done solving the rest of the crossword ...
user avatar
1 vote
1 answer
189 views

Letters and dashes... but without the numbers this time!

Previous Part Here's another fun puzzle! Decode this statement: ...
user avatar
3 votes
1 answer
542 views

A Rotten Riddle

Someone gave me a scrap of paper and told me if I could solve this, I would get a prize. The only thing on the paper was the following: ...
Jason's user avatar
  • 155
4 votes
1 answer
1k views

Decode 'xorarlpziebpwanywxnf' to find the hidden message

Try to find the hidden message in the text: xorarlpziebpwanywxnf These seemingly random numbers will help you solve the puzzle: ...
Justiniscoding's user avatar
14 votes
2 answers
579 views

->Transitions->

Here is a crossword to solve; the yellow squares hold a relevant word. Online tools will be useful/needed. partial text transcription: ...
Amoz's user avatar
  • 26.9k
1 vote
1 answer
84 views

Numbers and Dashes again... but with letters this time!

Previous Part Here's a fun puzzle I created! Decode this statement: ...
user avatar
-2 votes
2 answers
147 views

A Ravenous Riddle

I’ve lost a phrase in here, can you find it? Once upon a midnight dreary, while I pondered, weak and weary, Over many a quaint and curious volume of forgotten lore— While I nodded, nearly napping, ...
user avatar
2 votes
1 answer
229 views

Numbers and Dashes

Here's a fun puzzle I created! Decode this statement: ...
user avatar
-3 votes
1 answer
116 views

Entry to CIA Part #3

Previous Part: Part #2. Your screen shifts, bringing a new message on. It is simple: There is one final challenge that must be solved before admission. If this is solved the CIA will accept you! Good ...
user avatar
3 votes
1 answer
167 views

Which door to the party?

As you stroll on a walk with your friend, your friend talks about moving. Your friend doesn't have enough money to move to a good apartment, so he contemplates moving to a cheap hotel, but this hotel ...
user avatar
2 votes
1 answer
186 views

Entry to CIA Part #2

Previous Part: Part #1 After successfully completing Part #1's puzzle, you receive another message from the CIA on your black screen: Dear Reader, we are glad to state that you have been accepted ...
user avatar
4 votes
1 answer
627 views

Entry to CIA Part #1

As I searched for different topics on Google, my whole screen suddenly went black and gave me this letter: Dear Reader, if you have come across this message, you may be applicable for the CIA. We are ...
user avatar
0 votes
2 answers
301 views

How to decode "rctg a fvfvyv mugmgkh"?

Here's a puzzle that I created. Hope you enjoy! What does this message say?: rctg a fvfvyv mugmgkh Here are some hints: Hint 2: Hint 3:
user avatar
-1 votes
1 answer
153 views

I’ve lost my message, can you find it?

- - - - . . . . …. …. …. …. -- -- -- -- … … … … . . . . .- .- .- .- … … … … . . . . --. --. --. --. … … … … .. .. .. .. --- --- --- --- …- …- …- …- -… -… -… -… --- --- --- --- .. .. .. .. … … … … .....
user avatar
12 votes
1 answer
432 views

A Key Game of Battleship

What two relevant words are encoded in this game? The stuff in the trays doesn't matter too much No special knowledge or programming needed. Hint:
Amoz's user avatar
  • 26.9k
24 votes
1 answer
3k views

–– –― ―― ‧‧ MORSE CODE –— ―— —— —— –‧ ‧—

—- -– ‧‧ ―― -― ―– ‧‧ –— –‧ ―— –- ‧- ‧— ―- ―– -‧ ‧‧ —‧ –― ―- -― ―― ‧— ‧— –– ‧– –― ‧― -― –– -- ? ―― ‧‧ –— ‧– –― ‧― ‧— ! Inspired by ⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀
Auribouros's user avatar
  • 6,581
-10 votes
1 answer
109 views

Kindly break this code [closed]

axca apax a xadxaght dzaazy, whala a paxdazad, waak axd waazy, avaz xaxy a qaaaxt axd cazaaaz valaxa af fazgattax laza— Whala a xaddad, xaazly xappaxg, zaddaxly thaza caxa a tappaxg, Az af zaxa axa ...
NielIGuess's user avatar
  • 1,004
5 votes
2 answers
381 views

Please respond Mark!

I have been trying to contact my son Mark for past 4 days, I hope he is alright. My 17 year old son went to attend "Mathematics Summer Camp", I am really eager to know about the camp, his ...
I'm Nobody's user avatar
  • 1,334
32 votes
3 answers
9k views

▉ ▎▊ ▐▎ ▋█ ▐▉ ▋█ ▐▉ ▎▊ ▐▎ ▎█ ▐

(I created this puzzle myself) I was shopping for groceries the other day, and I found an item that was in an unlabeled, uncolored package. In fact, the only thing that was on it was this barcode: ...
Sylvester Kruin's user avatar
40 votes
1 answer
11k views

🇷🇴🇹🇩🇷🇴🇹🇩🇷🇴🇹🇩🇷🇴🇷🇴 🇷🇴🇹🇩🇷🇴🇷🇴🇷🇴🇹🇩🇷🇴🇷🇴

🇷🇴🇹🇩🇷🇴🇹🇩🇹🇩🇷🇴🇷🇴🇹🇩 🇮🇩🇲🇨🇲🇨🇮🇩🇲🇨🇲🇨🇲🇨🇲🇨 🇺🇸🇺🇲🇺🇲🇺🇲🇺🇸🇺🇲🇺🇸🇺🇲 🇳🇴🇳🇴🇸🇯🇳🇴🇳🇴🇳🇴🇳🇴🇳🇴 🇫🇷🇲🇫🇲🇫🇫🇷🇲🇫🇫🇷🇫🇷🇫🇷 🇦🇺🇭🇲🇭🇲🇦🇺🇦🇺🇦🇺🇦🇺🇭🇲 🇪�...
wjandrea's user avatar
  • 585
4 votes
0 answers
361 views

The Official Stack Exchange Spelling Bee, sponsored by *something something*

Behold, the First annual official amaaaaaaaaaaaaaaaaaazing Puzzling Stack Exchange Spelling Bee! With hard words! Harder puzzles! And conveniently pre-signed-upped competitors!!! insert canned ...
user avatar
7 votes
1 answer
993 views

My angry new boss

It had to happen with all the people leaving and the confusing devices at work. My old boss resigned, leaving us with a new, quite peculiar replacement. He fires people, and then he hires others, all ...
Auribouros's user avatar
  • 6,581
12 votes
1 answer
765 views

Yes! Paaawk mmm

Try to make sense of what you see below. M◓_◔z◔z◔a◓(_◔ + ,◓) M◓_◔z◔z◔a◓(_◔ + ,◓) ◠◔(u◓ + _◔)_◔◠◔(_◔ + >◓)a◓z◔ P◓_◔z◔z◔a◓(_◔ + ,◓)
Prim3numbah's user avatar
  • 34.3k
7 votes
1 answer
349 views

Follow the randomly-bouncing ball

We are going to generate information out of nothing (well, nothing and a bit of something) just by randomly bouncing a ball. The result will be a message you can use to protect humanity. Let's use ...
SlowMagic's user avatar
  • 13.8k
-1 votes
1 answer
422 views

What are the sentences?

Can you figure out what each sentence is? 9 1215225 251521. 96 9 235185 1 4157, 920 231521124 25 1915 715154. 415320151819 1185 141520 15141225 168251993911419.
user avatar
5 votes
2 answers
900 views

the television: a country's finale

This puzzle belongs to the puzzle series: A-Countries-Journey This is part 3. New country! Welcome to the UN! Here is your task for today: Germany's Cryptics Factory: where the cryptics are always ...
user avatar
4 votes
0 answers
623 views

Running away from a 5 euro fine

Scenario: It is 10:50pm You are in France running away from you 5 euro fine in Germany. You finish paying your 13 euro bill at the coffee shop. Then when you check your inbox at 11:59pm our lawyer ...
Varun W.'s user avatar
  • 1,323
9 votes
1 answer
440 views

Doubling Down - When a Good Idea Goes Bad

(Please note that this story is a work of fiction spun for the sake of the puzzle. It is based on little actual fact.) Back in the early 1940's, in the dead center of WWII, there was a bit of a ...
Dopplegamer's user avatar
2 votes
0 answers
428 views

cypher puzzle with chess board

I found this puzzle here on reddit's cipher community The answer could be a word or sentence. I thought ABCDE meant the order 12345 and each square could be a letter.
Rksqn's user avatar
  • 21

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