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1answer
5 views

Square sequence puzzle

Find what comes next in the following sequence. 01,04,09,16,25,36,49,64,81,00,21,44,69,96,25,? Bonus: What is the rule of the sequence?
0
votes
0answers
33 views

Is there a circuit which can multiply the resistance value? [closed]

my sensor gives a reading in resistance change. However, I can track that change easily with an amplifier circuit. However, I don't want to use in that way. I want to use my device by multiplying its ...
7
votes
1answer
139 views

In company of thieves

What am I? With thieves I consort, With the Vilest, in short, I'm quite at ease in depravity, Yet all divines use me, And savants can't lose me, For I am the centre of gravity.
1
vote
2answers
87 views

How is this correct? [duplicate]

How is the following equation is correct?$29$ - $1$ = $30$ Hint-
1
vote
1answer
285 views

Knight or Knave

On the island of knights and knaves (where knights always tell the truth and knaves lie), you meet two islanders named Penny and Quinru. Penny: Both Quinru and I are knaves! Who is a knight and who ...
5
votes
1answer
286 views

Jumping token on a grid

A token starts at location (0,0) on an infinite grid. On turn $n$ it must jump $n$ units horizontally or vertically, in one of four directions. What is the least number of turns needed for it to reach ...
3
votes
1answer
110 views

Key to the infinite

I hope you will like this riddle: I am an invisible key but I don't open a lock. I am infinite and I am growing faster than anything. You are in me but you cannot see me. You need me when there is ...
7
votes
1answer
318 views

Your weekend bite-sized cryptic

Just a mediocre 5x5 cryptic. Nothing fancy, no theme, and hopefully I didn't do anything funky with the conventions of cryptic clues. Clues: 1A Nothing held by fake-rich group (5) 4A Code from an ...
5
votes
0answers
120 views

Jigsaw Puzzle Puzzle

(In German a Jigsaw is simply called Puzzle, the pun is lost in English...) A jigsaw has to match by form and (mostly!) by color at the tile borders. Assume your basic jigsaw tile consists of $m*m$ ...
2
votes
0answers
141 views

Who has betrayed me?

Imagine my horror to discover that I'd been betrayed. I knew it was one among five of my most trusted inner circle, so I sent them this message: Dear Anna, Bess, Chrissy, Diana, and Eva, I know one ...
3
votes
0answers
133 views

Her granddaughter is the only daughter of my brother

Pointing to a woman, Abhijit said, "Her granddaughter is the only daughter of my brother." How is the woman related to Abhijit? Sister Grandmother Mother-in-law Mother Source of the ...
7
votes
2answers
199 views

Gentrification in Chessshire

You can skip the back story and directly jump to the question. Capitalism has arrived in suburban Chesster the community most famed for The Game, and with a vengeance. Rents have trebled in less than ...
-5
votes
0answers
54 views

Mark !, An attempt at cryptic crosswords [closed]

https://drive.google.com/drive/folders/1X0Rer_atw2skUbrB-JFiJz5hcS7zQTKG?usp=sharing I am using this to create a personal puzzling repository. Kindly ignore.
5
votes
1answer
190 views

How did the king pay the worker? [duplicate]

A humorous king pays his worker with one inch gold bar everyday. He had a $31$ inches gold bar and he paid the worker $31$ days of a month cutting it in just $4$ places. How is this possible? Taken ...
6
votes
1answer
336 views

Discounts in a shop

I came across this sign in a shop and thought it could make a nice puzzle. So you can buy items and get discounts depending on how many items you got. You can combine discounts and use as many as you ...
5
votes
1answer
182 views

A brain[expletive] sudoku

This is a Sudoku that is also a Brainfuck program. The standard rules of Sudoku apply. The same symbol can not appear twice in the same row, column, or 3x3 box. The grid should also form a functioning ...
5
votes
1answer
315 views

Roaring walls of water

This is part 2 of the puzzle series that started at Living the traveller's dream. Each part is solvable on its own. Dear Puzzling, Time really does fly when you are having fun. It seems like only ...
11
votes
0answers
189 views

Chess A Knight's Journey

You'll need to know about: A game that has existed for over 1500 years A game that doesn't exist ♞ → I → II → III → ... Answer = Xxxxxxxxx
4
votes
1answer
60 views

I can be caught but not liked a lot

I can Go with your heart but not with your brain Mess with your head but not with your hair Flow with your blood and hang with your shoulder Stay with your feet but not with your ankle Who am I?
0
votes
3answers
138 views

What…? Goodness… I must be slipping

I come with time To most, if not all people Don't forget, you might get me too I am a very emotional pendulum And can cause people to go mad Remember, I'm not uncommon Tens of millions is my count I ...
1
vote
3answers
141 views

Test of Pentominoes

These are pentominoes, with letter codes: Create 4 yes/no questions which uniquely classify each pentomino. Examples of such questions are: Does it have rotational symmetry? Does it have reflection ...
21
votes
7answers
2k views

What is the minimum number of helpers that an explorer need to cross the desert?

There is a desert which can be crossed only by walking and this takes six days. The explorers of the desert can carry at most four days' water and food. If they want, they can take helpers with them. ...
-6
votes
1answer
62 views

3 colored squares in each row and column of a 7×7 grid

Imagine we have a 7×7 square, and we want to color it a way such that each row and column has exactly 3 colored squares. How can this be accomplished?
4
votes
1answer
85 views

Mix a 2x2 Rubik’s cube

What is the minimum number of 1/4 turns of a solved 2x2 Rubik’s cube, such that no face will have two tiles of the same color? (I do not have this puzzle’s solution.)
-2
votes
1answer
119 views

How old are Jim and John? [closed]

(Disclaimer: I remember a puzzle like this I did a long time ago, but this isn't a direct copy of the puzzle, only it's formatting. If this is appears to be a copy of another riddle, I will simply say ...
0
votes
1answer
110 views

Foul, foul! What am I?

Despite being well-decorated, stylish, and sturdy I'm often dark inside, and When put into use, I am dark all around I am destined to carry Something (that will soon turn foul) To keep what is inside ...
1
vote
1answer
78 views

Finding a lock combination [closed]

Here is a puzzle that I recently encountered: You have a four digit lock with the following clues. When you enter 1378, one digit is correct and well-placed. When you enter 2834, nothing is correct. ...
14
votes
2answers
3k views

If O^3=DAD and (IM)^2=MOM, then what is MAID?

If $O^3=DAD$ and $(IM)^2=MOM$, then what is $MAID$? Source: I don't have the original source of the problem. But I found this on the book Neurone Abaro Onuronon by Muhammad Zafar Iqbal.
7
votes
4answers
874 views

How did the criminals escape from the jail?

There are $72$ criminals in a jail in $8$ cells as shown in the picture above. There are $9$ criminals in each cell. There are $4$ guards. Each of them watch over the $4$ corridors. As there is a door ...
-5
votes
1answer
44 views

Cubes, what am I? [closed]

I am a cube Made up of cubes Twenty six cubes Colorful cubes Spinning cubes Sliding cubes But always a cube A large, cubed cube Not a ruby cube And not a phoenix cube But a bright cube With-lot's-of-...
3
votes
1answer
162 views

A celebrity you're guaranteed to know

I'm famous on the largest scale, and by millions I'm considered hot. Often confused with a younger male, but young and male I am not. I've never offended and nor have lied, that is what I can ...
-4
votes
1answer
84 views

Without me, one can see nothing

Without me, one can see nothing With too much of me, one can see nothing With enough of me, one can see everything Colors are thanks to me I am why things can see What am I?
1
vote
1answer
93 views

Ho, Hum! What Am I?

Ho, hum! I'm grand and tall! Sharp and dull, I am not small! Kick my legs, but I won't fall! Larger than a market stall! Some see me balance atop ball! But I prefer the grass and all! Asia, Africa ...
9
votes
1answer
958 views

What is a Mediocre Word™?

This puzzle is based off and inspired by the What is a Word™ and What is a Phrase™ series started by JLee and their spin-off What is a Number™ series. Main puzzle: If a word conforms to a special ...
1
vote
2answers
157 views

Tenacious, what am I?

Wrapped around and around My good friend that spins in bounds Without me, he'll be removed By another with me on the groove I'm quite tenacious, yes I am Clinging on while I still can I keep many ...
-4
votes
2answers
108 views

Hard and dry, limp and moist, what can I be?

I go into your mouth hard and dry And I come out limp and moist I'm often a pinkish color But of course, my color may differ As may my size and flavor Indeed, my very texture might vary As well as the ...
-2
votes
1answer
216 views

The Box of Tic-Tacs

You were kidnapped and had no way of escape. The kidnapper opens the lights, and in front of you is an opened box of Tic-Tacs. He claims that he ate from 0-5 Tic-Tacs, (with 60 from the newly-bought ...
-4
votes
0answers
58 views

How does my Rubik's Cube skill compare to others? [closed]

I am sub 30 and using the CFOP method. I cross in about 3 seconds, F2L in 12, 2 look OLL in 3-5, and PLL in 2-5. Am I below average, average, or above average?
11
votes
1answer
2k views

I have a bow, what am I?

I have a bow, but no set of strings I have a collar, but I'm not a pet thing I have a stem, but I'm not from a pot I have a blade, just not from Camelot I am often scraped and dropped and abused But ...
0
votes
1answer
150 views

Present at school… Who am I?

I am present at school But can't stand pools Water tends to scare me But croutons appease me I frolik in class But can't ever pass Work can't be for me But climbing is my glee I crow in all lines In ...
1
vote
1answer
122 views

5 Brothers, what are we?

I have 4 brothers My 1st brother is a bother, and points everything out My 2nd brother is tall, and quite foul at heart. My 3rd brother is about as tall as my 1st, and quite decorative. My 4th brother ...
16
votes
1answer
734 views

What number goes in the ?? box?

A simple pattern puzzle What is the number in the ?? box? Why? No programming please.
0
votes
0answers
52 views

Einstein Riddle [duplicate]

Who Owns the Cat In an upscale gated village, there are five houses in a row along the main road with different colors. They are occupied by 5 bachelors who come from different provinces, have ...
-2
votes
1answer
91 views
6
votes
1answer
194 views

Ancient math: a pill on the ground

There are 3 floors of a building. There are 3 sets of 4 people going to every floor one-by-one. There is a "pill" on the ground, which means nothing. What does this mean? Hint 1:
0
votes
0answers
65 views

Guess bunch of chars from the bitwise XOR and AND operations with their counterparts [closed]

I have a puzzle in C that uses XOR. I need to find the values of local variables. All of them ar ebytes encoded apart from local_11 and ...
17
votes
1answer
517 views

Slitherknot (Double Slitherlink)

This is a variation on the classic Slitherlink Puzzle. However, instead of creating one loop, you must create 2 separate loops. The two loops can not share any edges, however they can cross or meet on ...
-1
votes
1answer
87 views

Consecutive number division puzzle 2 [closed]

Find 4 consecutive numbers that divide 𝑤, 𝑥, 𝑦, 𝑧 respectively, where 𝑤, 𝑥, 𝑦, and 𝑧 are also 4 consecutive positive numbers greater than 1, or prove it's impossible. Bonus: What if w > the ...
1
vote
1answer
73 views

Consecutive number division puzzle [closed]

Find 4 consecutive numbers that divide into 2,3,5,7,respectively or prove it's impossible. No computers, except for checking. If there are multiple solutions, list them all or make a formula for ...
1
vote
1answer
148 views

Catch the fugitive

The fugitive is at the origin. He moves at a speed of 100. You have a guard at every integer coordinate except the origin. A guard's speed is 1. The fugitive and your guards move simultaneously and ...

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