# All Questions

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1answer
336 views

### ABCDEFGHIJKLMNOPQRSTUVWXYZ

You are finding 3 places. Also, Kiribati's flag is for checking if you got the "places" correcct. Hint 1: Hint 2:
1answer
325 views

### I am a creature from the ancient world

My head has two faces. My upper body is powerful. My belt honors two great men. My legs and feet are numbered incorrectly. What am I?
1answer
181 views

### A ----------y Puzzle

The puzzle below asks a question. Can you answer it?
2answers
617 views

### A rectangle cut into two pieces, which build a square

A rectangle with side length a and b are in ratio $a : b = (n+1)^2 : n^2$, where n is a positive integer. Is it possible to cut each such rectangle into two pieces, which can be put together to build ...
2answers
348 views

### PSE Advent Calendar 2021 (Day 3): Tentai Show

This puzzle is part of the Puzzling StackExchange Advent Calendar 2021. The accepted answer to this question will be awarded a bounty worth 50 reputation.< Previous Door Next Door > Divide the ...
0answers
70 views

### Camel-eon 8x8 tour

This question is inspired by the Chameleon 8x8 tour puzzle. A knight is a chess piece that moves by jumping to a square $\sqrt 5$ units from its location. (The more conventional way to put it is that ...
5answers
2k views

### Help needed with my niece's math puzzle

My niece is having problems with the attached and I can't figure it out. I think I'm overcomplicating it. Does anyone have thoughts on how to solve it?
2answers
583 views

### PSE Advent Calendar 2021 (Day 2): A Christmas Tree for broke Nerds

This puzzle is part of the Puzzling StackExchange Advent Calendar 2021. The accepted answer to this question will be awarded a bounty worth 50 reputation.< Previous Door Next Door > Question: ...
0answers
75 views

### Rigid regular nonagon from 21 Meccano strips

You are given 21 Meccano strips, where the distance between adjacent holes is 1 unit: 9 strips of length 10 (hence having 11 holes) 6 strips of length 18 (19 holes) 6 strips of length 19 (20 holes) ...
1answer
274 views

### The commanding Riley

My prefix is a form of money. My suffix has electrical charge. My infix is your abbreviation. Altogether I command. What am I?
1answer
117 views

### How can the princess escape the prince?

This is the story of the sister of the princess in this puzzle. I will shamelessly copy-paste some parts of this post. I have no reference to give for this version as I adapted a Computer Science ...
0answers
83 views

### Help Alice and Bob divide up their finances

Our friends Alice and Bob must separate their finances. They divide up the first 18 items as follows. Alice Bob Apartment House Fee Owe Purchase Sell Money Income Lease Borrow Debt Loan Tax ...
0answers
146 views

### I Don't Understand This Crossword [Puzzle]

What Notable Object is the Following Crossword Cluing? Across: 1. Clattering or banging, for example (5) 2. Has never been done before (8) 3. Fiery pit (4) 4. Exam answer (8) 5. Very cream of ...
1answer
295 views

### My prefix rids sinning, my suffix is swimming

I thought of this riddle with my sister. Feedback is appreciated. My prefix rids sinning. My suffix is swimming. My infix is cheeky. And where I live its weedy. Who am I?
1answer
1k views
+50

### PSE Advent Calendar 2021 (Day 1): La laa laaaaaa laa la Christmas

This puzzle is part of the Puzzling StackExchange Advent Calendar 2021. The accepted answer to this question will be awarded a bounty worth 50 reputation.Next Door > ...la laaa laaa laaa la la: ...
2answers
948 views

### Laser and mirrors on a 4x4 grid

You are given an empty 4x4 grid. You can place some diagonal mirrors into the cells of the grid. You then fire a laser from some location outside of the grid. The laser travels in a straight line. ...
2answers
129 views

### How can we allocate when we have 150 open slots every day (5 days a week) for those 200 arrivals every day

My question is to solve a very basic problem related to the allocation of slots. Say there are 20 teams with 10 persons in each team. I have 150 open slots every day (5 days a week) for those 20 teams ...
1answer
339 views

### The Video Gamers' Double-Duty Crossword 2

See the original HERE Video games — Trivia vs Wordplay — one more time: Here are twenty crossword clues that describe twenty video games. Solve them if you'd like! Or, if you treat each clue as ...
2answers
186 views

### Sequences on an IQ Test

I found this IQ test (http://free.ultimaiq.net/nse.htm) and can't seem to solve questions 18 and 19: Q18: 120, 10, 3, ?, ? Q19: 41, 23, 61, ?
0answers
102 views

### What is the pattern in this IQ test problem?

The image is a little bit confusing. But the pattern is supposed to be 2 > 4 > 6 > 8 > 10 (the answer) > 12 circles This one really had me scratching my head. I noticed that the bottom ...
1answer
2k views

### Between you and me

🟥🟥🟥🟥🟥 ⬛⬛ ⬜⬜⬜⬜ air pollution ⬜⬜⬜⬜ wildebeests ⬜⬜⬜⬜ bullets ⬜⬜⬜⬜ whine ⬜⬜⬜⬜ cozy Your final answer should be an appropriate image.
3answers
1k views

### Chameleon 8x8 Tour

It is known that a knight can visit every cell of a 8x8 chess board exactly once. Here we consider the same task for a chameleon chess piece. This piece begins as a knight, then it transforms into a ...
3answers
207 views

### Reversible number problem

These are the reversible numbers In this example we have an operation that on one side gives the result 6 and turning it gives it 12. Is it possible using reversible numbers and mathematical ...
2answers
308 views

### How many seats around the table?

This puzzle is very much inspired by a recent, excellent, one, posted here. If anyone, in particular the author of the other puzzle, prefers this one to disappear, I will immediately do so and I ...
1answer
112 views

### Find two integers based on their sum and a random number

Alice, Bob and Charlie play a game. Alice writes down two positive integers on a blackboard visible to Bob and Charlie. She says that one of them is of her own choice, the other number is the sum of ...
1answer
2k views

### The grass is greener on the other side (it's a matter of perspective)

What word is hidden in this image?
1answer
212 views

### 10x10 Fillomino

Interactive solving website For help/rules on solving, please look at the website's "help" section, which lists fillomino rules. Please use the website to solve the puzzle unless you are ...
1answer
148 views

### Colored trominoes touching corner-to-corner on a grid

Let's have an 8x8 GRID to be filled with L-trominoes of 3 different colors. 64 squares leave room for 21 trominoes, so there should be 7 trominoes of each color and one empty square. Trominoes of the ...
2answers
413 views

### Form an equilateral triangle

Alice and Bob take turns to mark points in $\mathbb{R^2}$ (i.e. infinite 2D plane). Alice can only mark $1$ point on her turn, while Bob can mark $4$ points. They're free to mark their points anywhere ...
3answers
249 views

### Can any two different 3×3 scrambled cubes be exactly same on all the faces?

There are millions of Rubik's cube combinations possible. If I have two 3×3 Rubik's cubes and both are scrambled, I want to make one scrambled cube exactly the same as the other without solving them. ...
2answers
222 views

### Number of elements as compound

What simple compound is precious to life and encodes the total number of elements? What other thing does it code and is revered by some as precious to life? Accepted solution should show how the ...
0answers
200 views

### 12:41 puzzle: colorful geometry

The answer is a 4-letter word. I will not be giving any hints. This puzzle is very old. The puzzle is solved using only the image (no clues to the puzzle in title or description).
1answer
431 views

1answer
1k views

### A gross of colored dots

The answer to this puzzle is a person. Transcript of the colors: ...
1answer
276 views

### Cryptic Acrostic 3: Built So Fly

This is an acrostic puzzle which uses cryptic clues. If you're unfamiliar with either or both of those, click the associated link. A complete answer should give the quote, author and source, as well ...
1answer
159 views

### I often come from nothing, who am I?

I often come from nothing My worth cannot be inherited or given Put me in a winning position And my success is still not guaranteed What I give you has no utility But it's something you wouldn't want ...

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