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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3answers
271 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 ...
3
votes
5answers
926 views
What is the code?
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 ...
3
votes
2answers
143 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 ...
7
votes
1answer
88 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 ...
4
votes
2answers
105 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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vote
2answers
165 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
votes
4answers
474 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. ...
5
votes
1answer
130 views
Looking for a message
I'm looking for a secret message found using these two clues:
181-5 253-14 294-7 298-6 382-11 384-2 59-9 480-1 510-10 541-13
3
votes
1answer
100 views
You'll be stuck in this maze, forever (Cubic Cipher)!
Okay, so I mentioned in another puzzle that I created a new kind of cipher, which I refer to as a Cubic Cipher, now that the way to solve it has been established, it's time to ramp things up. As ...
3
votes
1answer
81 views
A prisoner's cipher enclosed within an email
An associate of mine was recently arrested and is being detained in a prison in Ohio until his trial in a couple of weeks. He and I need to be able to communicate some, ummm, compromising information ...
11
votes
2answers
405 views
Tricky Riddle, Wordplay heavy, What is my name?
Today, I have what I consider a tricky riddle for you to answer. Please note, I have added the correct tags to this riddle.
I have some math problems that I need help solving. Do you think you'd be ...
7
votes
2answers
401 views
Looking for a word
I'm looking for a word.
Use all the skills listed on the tags.
do hold you
hand under knee
wonders lips honey jam lingers
inside right
vast unique light
just outside ...
6
votes
1answer
280 views
Find the hidden message!
I posed a similar challenge to someone and it appeared to be sufficiently hard that I'll post it here. Sooo... Find the hidden message! ...
7
votes
1answer
150 views
What am I cooking up today?
Today,
I decided to cook something that, if it cooks correctly, should turn out pretty cool. Below are a series of riddles and ciphers that list the ingredients for what I am cooking. Can you figure ...
10
votes
2answers
175 views
A new kind of cipher?
So,
I believe that I may have created a new kind of cipher, would you be able to solve it? (I'll let you know what I've decided to name it once you've solved it :) )
...
9
votes
1answer
319 views
First Cryptography Puzzle
When adam and eve sinned,
apple was the key.
Lies of the Serpent,
they both believed.
Alternate:
56 108 87 97 119 53 97 43
57 49 68 105 66 51 121 115
84 54 120 51 81 65 61 61
I'm looking for just ...
1
vote
1answer
49 views
The Star Spangled Shifter and his coded messages
I got a strange email today. I tried running this through every decipher I knew of, but I couldn't figure this out. Can you help me figure out what this mysterious figure wants?
from: ...
0
votes
2answers
131 views
The Trail of Clues: The Mystery island
<--- Previous and first clue
You are standing on a roof in Israel at the top of the Ladder. You notice that there is a small package taped to the top rung of the ladder.
You pick it up and take it ...
5
votes
0answers
221 views
Coloured dot cipher
I, as a curious being, stumbled upon a page which had a hidden dot cipher in it.
Part of the console states:
[...] we left you a little message in the dots of the footer
(Source: segment.com)
The ...
6
votes
1answer
186 views
2
votes
1answer
63 views
A Kidnapped Friend
One friend of mine has been inactive over the past few weeks.
One day, my friend sent me this:
Hello there, I have been kidnapped! I secretly made this message in order to get you here. Here is ...
14
votes
1answer
609 views
What's the passcode?
One morning, as you wake up, you feel something on your face: It's a letter. As you take it off your face to read it, You fall off your bed. Uurrrgh, you say and stand up. The letter says: ...
2
votes
0answers
184 views
Definitely not suspicious
This unsuspicious ... post - has just a bunch of random letters.
No secret words, no silly ciphers, nothing.
Nothing to see here. Goodbye.
Urgent secret message: Go to another question
ahem, what ...
1
vote
2answers
153 views
Encoded text message
I've revived the above texts from my friend simply called "me". Apparently the text messages tell you everything you need to know. Arrrrrrgh! I told him not to mess with people.
Hint 1:
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vote
1answer
168 views
Look inside to answer this [closed]
Qwb'kr
kkuau; ekx kbwq .
I'll say that what is important is not what you read.
Hint 1:
Hint 2:
Hint 3:
Answer to prove the hold reason wrong:
2
votes
1answer
317 views
Decrypting a Cesar Cipher puzzle from a hex
I have the following hex to ascii conversion:
70656c636762207a726e61662070656c636762207a726e = pelcgb zrnaf pelcgb zrn
Applied with ROT13 I get: crypto means crypto mea
I'm also provided with the ...
6
votes
1answer
118 views
Where did my Professor GO?
You wake up on Monday, realizing you're late to meet with your professor. You put on your hat and hurry down the stairs. Just as you're about to leave, your mom gives you an earful (unfortunately, you ...
-3
votes
2answers
114 views
3
votes
1answer
82 views
Find the hidden dialogue
26535-34825-69399-78164-50288 59230-26433
70679-41971-14159-78164-06286-34211
Hint 1:
Hint 2:
12
votes
3answers
305 views
Bird is NOT the word!
I can't get into my computer.
It's password protected, you see, and I got hit by a cement truck this morning in front of the Compound Word Store.
Luckily, I have this nifty cheat sheet. It was ...
1
vote
0answers
120 views
50
votes
2answers
8k views
My Spying Girlfriend
I need your help again. My girlfriend Ada now has a job at a spy agency and there's a... situation.
Ada's boss called her into his office this morning. He was holding a weird tube with a button in ...
2
votes
1answer
69 views
Seeking Fortunes
Great uncle Joe passed away apparently without a will. However, one of his distant relatives got a note from him. He said that all of his relatives have to get a chance to decode it. Here is the note. ...
5
votes
2answers
114 views
Car Return Problem
Dave planned a party for his new company. Hundreds of people were invited and he knew that car parking would be a problem. To make it easier, the staff were to park the cars by brand and size.
On ...
1
vote
1answer
178 views
Cannibal puzzle
You wake up in a dungeon. You see some small letters on the walls. They spell:
You must get out of here. I have given you a simple puzzle. Here is a code: rw nxu mca ldpmhf "j uium um mhm b fctto". ...
3
votes
4answers
391 views
Where did this mysterious note come from?
The boy had a cat on the boat, Alone among blue all around. He wrote a very brief note, Hoping the can would be found.
I just came back from the Latpipe Hotel and decided to head to the beach, for ...
6
votes
1answer
61 views
Wordplay Puzzle
So, as I was flipping through my papers from school, I realized I made an unscramble puzzle for my friends. I was interested if anyone could solve these words with a hard twist. Every scrambled word ...
19
votes
6answers
1k views
50th Puzzle Landmark: My exciting exploits with Adedayo, Prince of Nigeria
Today marks a very exciting day for me. Today will be my 50th puzzle on this site, and as such, I've created a challenge the likes of which I have never done before. I hope it to be my most ...
4
votes
2answers
719 views
Help my dear Friend!
My friend has been Kidnapped! You must find him at a location. The kiddnapper gave me a hint:
iuay hyptqg pf du ukt sxdcd qi, qi
Please help him!
5
votes
3answers
197 views
What's the secret text?
Poem:
The sequence leads you there
The "shift" is not that rare
It is ancient, you will see
Jupiter is the key
14 15 92 65 35 89 79 ??
OGSULLOIOGRREYSGXZ
Hint
Big Hint
6
votes
1answer
275 views
Base what? Oh, great, now I need magic
This cipher's too hard to solve by itself.
This short riddle provides sufficient help.
You must consult the fifth man;
He'll lend a hand,
And less information quite appropriate.
<...
9
votes
3answers
2k views
Where is my 25 reputation?
You, Detective Ryan, are packing up, as you are retiring. You have to say goodbye to your best friend, Wudriwurds. You open his last letter that he gave you, and read it with all your heart.
Dear ...
7
votes
2answers
153 views
logical deduction - A Cipher with Numbers
44339994666666455533
Can you solve this cipher? I know the repetition of numbers holds some significance, but can't really put a finger on how exactly. Any help will be appreciated.
1
vote
2answers
128 views
an enigma i can't solve, could you please help me solve it
Xnt vhkk rshk rghmhmf dudm vgdm hs fdsr czgj
could you please help me crack this enigma, someone sent it to me a few days ago and i can't stop thinking about it
1
vote
0answers
148 views
Decoding ciphertext with base64 yields obscure unicode
Context: I was given a piece of encrypted string to decipher and I have been stuck at it for a while. To not ruin the point of the problem, I will provide only some description of the text and my ...
6
votes
1answer
381 views
That is a battlefield
These emails keep coming, and I can't block them. Apparently my ISP has told me that they're too secure to end up on my block list, and for some reason, I can't send these messages to spam. Whoever ...
4
votes
1answer
409 views
A lad named E. Mandala
In a follow up from yesterday, I was sent another email from the same source. The tile of the message was, "A lad named E. Mandala" which I've set the title of this puzzle to. Can you help me make ...
3
votes
1answer
86 views
What is the code in the following sequence of numbers?
6-1, 9-3|4-1,6-3 2-1,5-3|
4-3.6-2|2-1,6-1,3-2,7-3,4-3,2-3,2-1|
6-1,3-2,2-1,6-2,8-1|6-1,9-3|3-1,6-3,6-3,6-1|
The above sequence is a code which leads to a riddle. Please help me crack it.
6
votes
1answer
308 views
What I Learned from the Attic
Now that I have moved into my parent's house for a temporary stay, it was time for me to earn my keep. My father has become quite old, and time has not been kind. There is a lot of unused and ...
0
votes
0answers
280 views
Trying to de-code this and I'm having a lot of trouble
The code is:
dsetg nvxgn abfus fcaur vvkyq llszs yybik pkefa vbyjj stalk aupoc dvyai qnlrj iewzb qfcct mgqrg xxuqy sapeb reahl btxbz wisfd klbqr letxa zhu
I've run it through a bunch of ciphers ...
