Top new questions this week:
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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 | ...
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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 ...
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Is it text? Is it a face? Is it code? What is it?
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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 ...
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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 ...
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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 ...
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Exactly 3 of 7 circles here should be painted black to make the Masyu uniquely solved. Find them!
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Greatest hits from previous weeks:
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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 ...
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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 ...
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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?
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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.
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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 ...
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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 ...
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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 ...
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Can you answer these questions?
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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 ...
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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 ...
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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 ...
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