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21
votes
3answers
7k views

To caress me from the front, you first need to lick me from behind. What am I?

This is my English translation of a famous puzzle that is apparently little known in the West.
4
votes
2answers
437 views

Gambling snap game

You have two shuffled decks of cards (52 cards each). You put them next to each other and deal two at a time, one from each deck. What is the probability that there will be at least one match? ...
1
vote
1answer
85 views

Randomly solving a rubik’s cube with only one face given

Given only one face of the rubik's cube, is there any way to form the other faces randomly so we end up with valid solvable configuration? Let’s suppose that I have an input which is only one face of ...
10
votes
2answers
422 views

Can you help find my mistake?

I wrote this short story a while back, but I'm afraid I made a mistake. Can you spy it for me? This puzzle is from CG. with love. Good luck I once knew a Young Young lad The Guy was Young Lewis ...
16
votes
1answer
833 views

Secondary Alphabetical Order

Here are the final 16 Official Letters of the Secondary Alphabetical Order: .. .. K, L, A, I, U, G, R, H, N, F, B, X, O, Q, J, Z If you can figure out the rest of the order, the first ...
9
votes
1answer
345 views

What does all this mean? He wondered

When he woke up, he found himself in a beautiful but strange place. He could hear the sound of ocean waves and feel the warm breeze. “Where am I?” he wondered. He started walking towards the nearest ...
3
votes
1answer
184 views

A Grid With the Products of Its Rows and Columns are the Same Set of Numbers

Lets say there is a $3 \times3$ grid that is filled with the numbers $1,2,3,...9$ Can the numbers be arranged so that the products of the columns are the same set of numbers as the product of the rows ...
-4
votes
0answers
154 views

Find the hidden initials and explain what means

TO, PD, FP, FCA, M, ? They can be anything from sports to instruments but it is difficult to consider the hidden sequence.
3
votes
1answer
276 views

Circle Puzzle… Replace the question marks

Try replace the question marks in this picture! Hint:
5
votes
1answer
228 views

What letter am I?

I am representing a specific letter... what letter am I?
2
votes
1answer
92 views

Another picture problem

Another picture puzzle. Replace the question mark. Once again, the information needed is there. So, try replace it!
2
votes
1answer
121 views

Make $\pi$ using 2 0 2 0 in this order

How can you make $\pi$ using 2, 0, 2, 0 in this order? Allowed operations: +, -, x, ÷, ! (factorial), exponentiation, parentheses.
2
votes
0answers
48 views

What are the specific algorithms Feliks Zemdegs uses to solve a 3x3x3 Rubik's cube?

I apologise if this is not the right site to post this kind of question, but out of all SE sites this one yielded the most question concerning specific cubing algorithms (namely this, this, this, this ...
0
votes
2answers
44 views

Rubik's cube from solved to specific pattern

Say I don't want to solve Rubik's cube but I want the reverse: I'm having a solved Rubik's cube (all stickers in it's right position and orientation) and I want to go from this state to a specific ...
5
votes
1answer
169 views

Picture-Problem

Here is a picture problem, and the task is to replace the question marks. All the information needed should be there. So... try figure it out!
3
votes
1answer
116 views

What is the technique I should use now to go ahead?

This is a partially filled sudoku from the Sudoku Expert app. I thought I learnt all tricks and techniques. But clearly there is something I don't know about.
-1
votes
1answer
63 views

Painting a grid with 3 colours such that there are no right-angled triangles of one colour

What is the largest rectangular NxM grid (by area) that can be painted with 3 colours, such that no three cells of the same colour form a right-angled triangle. N and M must be 4 or greater. We only ...
7
votes
1answer
645 views

Crossword solution I’m having difficulty in understanding

Oddly dismissing Carnegie Hall’s backer and investor. (5) Please explain how this cryptic clue works. This clue is from The Guardian Weekly, 5th January 2018.
5
votes
1answer
107 views

Sum of All the Others

There are ten different 10-digit decimal fractions, one of them being equal to the sum of the other nine. If each number has 10 unique digits, not counting the 0 before the decimal point (for example ...
-2
votes
1answer
80 views

What am I? Newest fun riddle [closed]

I am going to do it how I want and when I want. I know everything and I don't need your help. I'm here when you need me, maybe. What I am?
2
votes
1answer
159 views

Hiker's Cabin Mystery | Pt. XVII

Sorry for the long break everyone! It's been hectic. Here goes XVII: There is another chamber of the labyrinth which contains yet another inscription on the wall: Once again, there is a keyboard and ...
-5
votes
1answer
203 views

Make the numbers 1-50 using 2, 0, 2, 0

Make the numbers 1-50 using 2 0 2 0 in the given order. Use all four digits exactly once. Allowed operations: +, -, x, /, ! (factorial), double factorial, exponentiation, square root, parentheses. ...
6
votes
3answers
180 views

Find the value of $\bigstar$: Puzzle 10 - Uncertainty

This puzzle replaces all numbers with other symbols. Your job, as the title suggests, is to find what value fits in the place of $\bigstar$. To get the basic idea, I recommend you solve Puzzle 1 ...
0
votes
4answers
154 views

I do not break unless [closed]

I do not break if thrown from the highest building I do not break if you stamp on me I will break if touched by water Who Am I?
-1
votes
1answer
144 views

The Death Recording

A woman was found dead in her house. She lay slumped on her desk, holding a gun in her hand. A cassette tape recorder was on her table. The police on entering the house saw the cassette recorder and ...
3
votes
4answers
378 views

Help with a sudoku puzzle

I would really appreciate some help because I spent more than hours finding another number. It is supposed to be a very hard one but I started well and according to the key, my numbers are correct. Do ...
10
votes
1answer
677 views

Have you met Vera?

Across 1. Maybe St. Paul's Hospital admitted Polanski's wife, approximately half-hour missing (5,7) 7. Moving canoe to the sea (5) 8. Natural bottled water brand is all about having tea (6) 10....
2
votes
1answer
144 views

What is a Perfect Inquirey Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Perfect Inquirey Word™. ...
12
votes
4answers
1k views

Some text I'll riddle for you

Having a go at a Riley riddle. My prefix is exploitative My suffix is judgemental My infix is problematic All I do is hang around What am I? Hint:
23
votes
5answers
734 views

I Can Stand, But I Don't Have Legs

I can stand, but I don't have legs I can eat without a mouth, I can smell without a nose I can see without eyes But I can't do what I'm not allowed to What am I? Hint: Hint 2: Hint 3:
2
votes
1answer
166 views

Visual calculation puzzle

Below are some objects and numbers. Try figure out what they represent and finally replace the question mark.
6
votes
2answers
213 views

The Train and The Cyclist [closed]

A railway track runs parallel to a road until a bend brings the road to a level crossing. A cyclist rides to work along the road everyday at a constant speed of 12 miles per hour. He normally meets ...
12
votes
1answer
527 views

Patterns in colored 3x3 squares

Could you please give the answer to this puzzle. I can't seem to find the answer anywhere. (source, by user Kyu on Reddit) Additional insight by Kyu from reddit: Shared by Kyu: "Though I will say ...
3
votes
6answers
1k views

Make 28 with the numbers 2020

Try to make 28 from the numbers 2020. Allowed operations: +, -, x, ÷, ! (factorial), exponentiation, square root, squaring, parentheses.
-1
votes
1answer
152 views

Replace the question marks in this visual puzzle

Try replace the question marks.
9
votes
9answers
2k views

Find two coins using a balance scale

You are given 20 identical coins. 18 of those coins have a weight of 10g each, 1 coin has 9g and 1 coin has 11g. You are given a traditional balance scale with two pans (no reading). What is the ...
2
votes
6answers
1k views

2 crates and 2 logicians

Two perfect logicians (A and B) each have a bag of gold coins. A has more coins than B and each bag contains an amount of coins which is some multiple of 6. All coins are identical in appearance and ...
3
votes
3answers
286 views

A 3x3 grid of numbers with unique row and column medians

Can you place every number from 1 to 9 into a 3x3 grid such that the median of every row and column is a unique value? The median of a row is the number that is greater than one number and smaller ...
5
votes
1answer
223 views

Why do I celebrate later? (still 13,37 years)

A very little time ago, just a bit ago one may say, people started partying. Some even went out of their houses to do so… crazy thing, IMHO. Anyway, I don't, I'll start partying in 4886 days.¹ Why do ...
3
votes
1answer
120 views

Quit scrambling my keyboard!

It happened to me again! More scrambled, this time. ncb , r2u 3b,99 bn/c b72b ic326c
2
votes
1answer
226 views

COLOR-PUZZLE.2. Complete the picture

I have made another color puzzle. Try complete the picture. Edit made! Hint1: Hint2: Hint3(last one):
-4
votes
3answers
194 views

Ten, nine, eight, seven, six, five, four, three, two, one

Some of us already did, and some of us are going to end the years with the word "teen" in it soon, for another 94 years. So let me ask the question: How many distinct numbers can you produce with ...
15
votes
2answers
512 views

Some salt shaker

(inspired by Michael Kandel's poem about Samson, appearing in the English translation of The Cyberiad by Stanisław Lem) Struck sister, shattered, since settled. Simply seen, spreading sunshine,...
8
votes
1answer
221 views

How much information can we get from a thermometer?

A fairly common Sudoku variant is so called "Thermometer" Sudoku. In this variant arrows with a rounded end (which look like a thermometer) are added to the grid, with the rule that the numbers on ...
13
votes
1answer
709 views

A Riley riddle to end the year!

A Riley riddle from my neighbour: Ma prefex es a salfush beest, Ma suffex es oor ‘Noo’. Ma enfex es joos tha’, yous sees, Ma all, oor fustive doo. Um, I'm not sure if you caught all that, so ...
15
votes
1answer
592 views

A cube build with cuboids

You are given 27 pieces of 1x2x4 cuboids. Is it possible to build a 6x6x6 cube using those 27 cuboids?
6
votes
2answers
253 views

A 4x4 grid of numbers with unique row, column and diagonal ranges

Can you place every number from 1 to 16 into a 4x4 grid such that the range of every row, column and two main diagonals is a unique value? The range of a row is the difference between its maximum and ...
2
votes
1answer
116 views

Keys have been shuffled, boards turned

Some person decided to mix up my keys, and I forgot where my letters are. Fqji.br.hqrcu;wa-.'ubquvq.'zw;cjqa.ye
13
votes
1answer
423 views

Precision paper cutter

I have carefully positioned some words on the cutting edge of a paper cutter: ...
4
votes
2answers
122 views

A 3x3 grid of numbers with unique row and column ranges

Can you place every number from 1 to 9 into a 3x3 grid such that the range of every row and column is a unique value? The range of a row is the difference between its maximum and minimum values (...

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