# All Questions

152 questions
2k views

### One 'double agent' two-step on a waltzing floor

I'm in a jam – cornered I am! – No clue 'bout where to go Here's what went down, a pretty gown Some wine, a French chateau She whispered underneath her breath "Come dance with me and ...
1k views

### BFTIODFTTWKBCSC

This is my first self-developed cryptographic puzzle. I hope it is neither too hard nor too easy for you to break, and that you enjoy it. Please do not only post the answer, but also your way towards ...
8k 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 /...
1k views

### Is there a more efficient way to rotate the centre pieces on the Octo-Star?

I'm looking for a more efficient algorithm to rotate the center column of the Octo-Star puzzle 45 degrees. The situation below occurs when four properly-oriented edges are next to each other, ...
1k views

### Deus Ex crypto puzzle

There is an encrypted email in the recent Deus Ex: Mankind Divided game: From the game files, this appears to be the string: ...
350 views

### Find the place, find the palace

A part of me was a mode of transportation in the past. A part of me is the mode of transport in the present. A part of me is an important place in two fictional novels. A part of me has acted in the ...
324 views

### Rethinking this series on the syllabus

I assigned each person in my class the task of creating a number-sequence, however, 4 of the guys I usually consider to be leaders came back with baffling results. Can you make sense of their work ...
300 views

### The First Gate: Why So Tense?

Greetings fellow puzzlers and puzzled alike! I’ve concocted a little puzzle for you all... Well little may be an understatement, but I'll come back to that. Before starting, you should know that the ...
479 views

### Never Completed Game - Difficult Riddle

The seventeenth of the primes. Its twin is twentynine. Po. Let’s drive. Bye, Alfonsín. Add seven triangular. Sweet. It named the Valley. This riddle is taken from https://www.nevercompletedgame....
484 views

### Alternate, complex potions puzzle from HP fanfic

A long narrow room. The entrance is blocked by purple flame, the path onward blocked by black flame. On a table, the only thing in the room, are two dozen potions in opaque bottles. Half green glass, ...
980 views

### Decrypting the Key

So I've been trying to solve this Riddle called "Phage is Spreading.." ...
214 views

### One! Two! Fizz! Four!

Argh, how I hate those mean kids and their newfangled game!
197 views

### A Domino Rectangle

Can you arrange a standard set of $28$ dominoes into a rectangle of $7\times8$, where each of the 8 rows sum to $21$ and each of the 7 columns sum to $24$? Image from WikiPedia. The 'twistier' the ...
101 views

### At my beginning there's a vessel, you can slash me with a chisel

At my beginning there's a vessel, You can slash me with a chisel. I belong to the first from a total of four, There's nothing to add more ... Who/ what am I? Hint
320 views

### Secret message in a birthday email

A coworker sent this message around on his birthday. Apparently it has a secret message. Here is the exact email body: Good morning FakeCorp, I am turning 25 today so I'm offering loads of ...
254 views

### Determining the meaning of a challenge coin

I saw this rather cool looking challenge coin the other day, and I was wondering what the associated binary on the back of it means, as it isn't standard ASCII. I'd appreciate it if you all have any ...
1k views

### REALLY important days in history

@Z. Dailey asks a mathematical puzzle Important days in history... and to come! with a series of dates in years 1973, 1978, 1983, 1992, 2005. My puzzle asks the question: What is the previous date in ...
859 views

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582 views

### Crack the pigeon code

Can you crack this message? It was discovered in a chimney in 2012 attached to a carrier pigeon and was most likely sent during the D-day invasions. The GCHQ was not able to crack it, even after ...
248 views

### April Fool's Enigma

Every year, a famous French youtuber (e-penser) presents his enigma of April Fool, but this year, targeting specifically a group of people who have done particularly well last year, he raised the ...
569 views

### 3D ring/rope wooden puzzle (Eureka) solution?

I have a Eureka 3d Puzzle Model G: On the box there are 3 puzzles: Remove the ring Remove the rope Move the ring to the other side I have found a solution to the first puzzle: but cannot ...
331 views

### Grandma's keynote

Found this note which is addressed To my grandma, in her chest Since she's passed now, here's my quest.. What tickled her interest? And who invited her as guest?
423 views

### Meteor strikes again

Part of a phone call: -...well why didn't you just say so? -It wasn't as easy as you thought, Jack. All the power lines here were destro--- -I know...It's not like we're living on a different ...
172 views

346 views

### Number Sequence Series-Question 7

This is a series of questions that are created by me. Here is question 7: (23)，(55)，(155)，(1255)，？，？，(56139611) I will give a hint to you guys in one month if nobody can solve it.
102 views

### Is my colleague happy with me?

So I graduated last year with a chemical degree and I started working in a lab. I'm still pretty nervous about making mistakes, so when I had to prepare a tricky experimental setup, I wrote down what ...
131 views

### No time for an emperor

I'm one word, made from two parts. Before this clause, some people I asked. One thought it was time to take chances! Another left to go where the dance is. Because they were lateral and ...
204 views

### Will you win the game?

You play a gambling game. On 100 folded pieces of papers are written 100 different values. You cannot see the numbers written on the folded pieces of paper, which are grouped in a pile. You pay 10 ...