All Questions

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

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?

The puzzle below asks a question. Can you answer it?

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 ...

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 ...

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 ...

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?

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: ...

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) ...

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

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 ...

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 ...

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 ...

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?

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: ...

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. ...

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 ...

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 ...

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, ?

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 ...

🟥🟥🟥🟥🟥 ⬛⬛ ⬜⬜⬜⬜ air pollution ⬜⬜⬜⬜ wildebeests ⬜⬜⬜⬜ bullets ⬜⬜⬜⬜ whine ⬜⬜⬜⬜ cozy Your final answer should be an appropriate image.

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 ...

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 ...

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 ...

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 ...

What word is hidden in this image?

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 ...

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 ...

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 ...

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. ...

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 ...

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).

$\left\lceil{\left(\left(2-1\right)^{19}+5\right)^{\left(\frac{20-23-5+14}{\left(\cos\left(\cos\left(\sin\left(\sqrt{\ln\left(\ln\left(\frac{20-\sqrt{25}\cdot19}{9-24}\right)\right)}\right)\right)\...

What word is displayed by these seven clues?

How many consecutive positive integers are at least required, such that there is always a number in such a sequence whose sum of digits is divisible by 19?

Alice has two dice each numbered from 1 to 6. Bob has two dice as well, the numbering is not known, but each face has a positive integer. The numbering on each dice can be different and a number can ...

A simple rebus puzzle for you all!

You have been tasked with assigning rooms to some mermaids who have visited the hotel. There are 9 mermaids: One is bald and bare-skinned One has a layer of fur One has a thick bark on their back One ...

What is the next number and why？ 3,7,10,11,12,17,?

Consider a sequence (finite or infinite) of different positive integers, such as the following, in which the first term is 1, and thereafter the nth term is either the previous term plus n, minus n, ...

While walking through the flower gardens, you encounter a small group of fairies stuck on a lilypad. There are 2 red fairies, 2 yellow fairies, and 2 green fairies, and they have nothing besides a ...

Each of the 88 dwarfs living on the farm has at least one friend. Of these dwarves, 44 are honest and always truthful, and 44 are liars and always lie. When Keloğlan visited the farm, 44 of the dwarfs ...

The 64 squares of a chessboard can be associated with 42 lines as follows: the 8 rows the 8 columns 13 diagonals from north-west to south-east 13 diagonals from north-east to south-west Those ...

Smallest by the banded one, the biggest, then the lead Extend to wave or crouch in anger, half-way-hunch to knead The clever use them alike the dim, though perhaps not to count The most unfortunate of ...

Please explain the following math. To start, here are some basic relationships - creative thinking may help (or not) 1) p < c < h < n1 <= n2 The pipe symbol is used as shorthand for ...

You might have to use some creative thinking for this riddle. Start with the one which has 4 Take out the 7 and you end up with an 8. Start with one which has 5 Take out the 7 and you end up with a ...

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 $N$. They're free to mark their points anywhere as ...

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

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 ...

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 ...