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Top new questions this week:

Twelve Labours - Conclusion

This puzzle is the FINAL part of the ‘Twelve Labours’ series, and contains spoilers for previous instalments, which can be found here: Prologue | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | ...

enigmatic-puzzle visual story metapuzzles  
asked by Stiv 29 votes
answered by Deusovi 25 votes

An Ailing Assassin

Since moving to the countryside, I've taken up a side job as an assassin. While camping out with a doctor, they told me that I had contracted an illness. However, since I didn't take any money with ...

visual rebus grid-deduction nonogram  
asked by Avi 14 votes
answered by HTM 21 votes

Blue. Orange. Green. Magenta. What does this strange picture represent?

Is it text? Is it a face? Is it code? What is it?

enigmatic-puzzle visual geometry  
asked by Connor MC 14 votes
answered by Florian F 14 votes

How to get a bowl with one liter of water

You are given a rectangular bowl with size 5 x 30 x 40 cm and you should put exactly one liter of water into the bowl. You go to your kitchen, where you can put the water directly into the bowl from ...

mathematics lateral-thinking strategy  
asked by ThomasL 13 votes
answered by hdsdv 25 votes

Reconstructing the results of a 5-team soccer tournament

5 teams are playing in a "round-robin" soccer tournament, in which each team plays each other team once. Each game has 3 possible outcomes: team 1 wins, draw, or team 2 wins. The winning team receives ...

logical-deduction sports  
asked by Dmitry Kamenetsky 13 votes
answered by Stiv 14 votes

Prime to Prime Sequel

This question is inspired by the Prime to Prime puzzle. The first 24 Prime Numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 Using up to 4 ...

mathematics primes  
asked by hexomino 13 votes
answered by Oray 9 votes

Unpainted Masyu

Exactly 3 of 7 circles here should be painted black to make the Masyu uniquely solved. Find them!

grid-deduction masyu  
asked by athin 13 votes
answered by Matthew Jensen 2 votes

Greatest hits from previous weeks:

What is the best method of scrambling a rubik's cube?

If I wanted to solve a physical Rubik's cube multiple times, for practice, what is the best, most random way, to scramble the solved cube? The best way I can think is to hold it behind my back and ...

rubiks-cube  
asked by David Wilkins 38 votes
answered by arshajii 26 votes

How did the police know?

One night, a man receives a call from the police. The police tell the man that his wife was robbed, murdered, and her body dumped in a remote location, and that he should reach the crime scene as soon ...

logical-deduction story mystery situation  
asked by Aggie Kidd 41 votes
answered by A.D. 82 votes

I am the first in Earth, What am I?

I am the first in Earth, The second in Heaven. I appear twice in a week, Never in a month, Once in a year. And I am found in the middle of the sea. What am I?

riddle  
asked by coDe murDerer 31 votes
answered by Daedric 47 votes

Correct way to add 22 to 4 to get 82

Inspired by this other puzzle, tell me a correct way by which adding 22 to 4 will give 82. As in that other puzzle, these numbers are all expressed in base 10.

logical-deduction enigmatic-puzzle  
asked by Trevor Powell 77 votes
answered by Dr. Wharfe 177 votes

Word sets with no repeating letters

I know a set of six 4-letter words without repeating a letter (i.e. using 24 different letters). Here is an example: gasp, verb, jinx, flow, duck, myth Are there sets of words with no repeated ...

word english language  
asked by Aravind 5 votes
answered by Uri Granta 5 votes

What is this magic trick with 6 cards featuring numbers between 1 and 60?

I hope this is on topic. I have a set of kids' magic tricks but I have lost the instructions! I was hoping this might be a good place to get some help. Here is the first one. What is the trick and ...

number-sequence puzzle-identification magic  
asked by dorothy 25 votes
answered by Rand al'Thor 26 votes

Five Angles in a Star

In a regular pentagram (5-pointed star), the angle in each point is 36 degrees, so the angles in all five points sum to 180 degrees: What about an irregular pentagram, such as the following? Now ...

mathematics geometry  
asked by Rand al'Thor 21 votes
answered by Milo Brandt 49 votes

Can you answer these questions?

Zed's E-mail: My Good Ol' Uncle Sugar

My friend Gabby and I constantly look out for each other. Just the other day, she received a strange message from what I thought was an uncle of hers. "Problem is," she started with a worried look, "I ...

knowledge cipher lateral-thinking story  
asked by Omicron Zed 1 vote

Word lists for general knowledge crosswords

When using software to create a grid for a cryptic crossword, most general-purpose word lists will do because you want most of the answers to be headwords from a dictionary. But I'd like to compile a ...

crosswords  
asked by Tommy Herbert 1 vote

Using burning ropes as timers

This puzzle is an harder version of a very famous one. It has been asked many times on PSE, but this time the question is slightly different (1) (2). So please read this question twice before marking ...

logical-deduction time  
asked by melfnt 3 votes
answered by Jan Ivan 0 votes
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