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An easy puzzle to solve

Which country's name cannot be written using only the first letter of any other country on the planet? For clarification, the first letters of the countries below spell GREECE. Germany Romania Equador ...
2
votes
0answers
34 views

Logical puzzle from a math homework for Russian fifth-year school students

The daughter of a relative of mine, a fifth-year school student in Russia, got the following math homework from her teacher: Here's my translation: Logical task No. 26. Students were solving a task ...
7
votes
1answer
72 views

Please feature this meta post

My first could describe a call or a fell, in two ways, And it sounds like a way of going fast in olden times. My second could describe a paper or a cloud, in two ways, And docked it's almost my first, ...
1
vote
1answer
46 views

Minimise battle time in Monster's Den

So there is this excellent flash game, Monster's Den. In order to make a high score, I must complete many battles..this question is about battles with the Legendary Monsters. The target is to reduce ...
-5
votes
0answers
57 views

iq test please solve it [closed]

1.357, 1251, 152, ?, ?, 0 2.452801, 773924, 102410, 471056, ? 3.011010, 100010, 100010, 100010, 000010, ?, 100010 4.53274, 71067, 7776, 14137, ? 5.4456, 8111, 6243, ? 6.120, 10, 3, ?, ? 7.122540, ...
6
votes
1answer
69 views

Cryptic Family Reunion: Flowing ever on

The answer to this puzzle is a list of ten thematically related words or proper names or phrases. Each of these is clued cryptically, and the theme is to be determined. Since the definition part of a ...
7
votes
0answers
88 views

Tubariphobia - The fear of pickles

There are many topics that polarize. But not a single topic comes close to the one and only, age-old question that some claim is the root of all division between people: "Are pickles disgusting ...
-4
votes
1answer
103 views

NSE iq test please teach me [closed]

http://free.ultimaiq.net/nse.htm 35, 147, ?, 2387 357, 1251, 152, ?, ?, 0 452801, 773924, 102410, 471056, ? 011010, 100010, 100010, 100010, 000010, ?, 100010 1001, 4524, 4299, 3984, ? 91420512, ...
22
votes
1answer
328 views

This new puzzle type needs a name {EXTREME EDITION}

A companion puzzle to the 'This new puzzle type needs a name' series, and inspired in part by @JeremyDover's answer to a recent question. Usually, puzzles in this series comprise a mash-up of two ...
1
vote
1answer
83 views

Are you guys ready for a QUESTion?

Chase me and my feet are not slow Catch me then skywards I go What am I? Hint:
4
votes
2answers
626 views

Someone Shoot Me!

Real-life situation, this time. I was at work the other day and had just done something. I needed to tell a coworker he needed to do it as well, but he was on the phone at the time. Not wanting to ...
11
votes
1answer
444 views

No Holds – a barred crossword

Across 1. Country girls finally returning home after being swallowed by snake (6) 6. Strong desire to omit essential part in writing important text (1,5) 11. Error usually eliminated within split ...
3
votes
1answer
134 views

Issues with Graph-It (Geometry Homework)

You are working on your geometry homework (graphic quadratics) and become bored of drawing the axes over and over again. Instead, you find an online tool called Graph-It that you use to graph the ...
5
votes
1answer
793 views

849, 352, 768, 493, 527 - Unusual number sequence problem

The sequence is: 849 352 768 493 527 This one has been puzzling me for days. I would appreciate any insight.
12
votes
1answer
934 views

What should I do with these emails?

I've been sent a bunch of very odd emails recently, starting on Monday and sent daily until last Thursday. I'm not 100% sure what they mean or why I am being sent them, but perhaps you could help me. ...
0
votes
0answers
88 views

That's fine, most of my family doesn't want to acknowledge being related to me either

Today I share a 100% true story from my past. I use to meet my little brother to eat together with him regularly, but any time his friends or others that knew him would meet me the conversation always ...
1
vote
1answer
58 views

119, 019, 609, 809, ?, 909 - A number sequence

This is probably very elementary for seasoned puzzlers yet I must request assistance with the following sequence: 119, 019, 609, 809, xxx, 909 What is the underlying principle here? Edit: Source: 2.2.,...
9
votes
5answers
807 views

A nice robot-control puzzle

The goal is to find a sequence (a "program") of max 6 commands that will move the triangle (the "robot") through the grid and make it visit all the squares marked with a star. Two ...
6
votes
3answers
442 views

How to divide their loot? The thieves' dilemma

Three thieves rob a jewelry store at gunpoint and end up with the following loot. 10 necklaces 8 bangles 6 rings It so happened that the jewelry was antique and valuable. They asked the scared ...
1
vote
0answers
126 views

A robot moving on a grid. Part 2

This is an extension of the discussion A robot is placed on a grid point. At each move the robot must take three steps along the edge of the grid. After each step the robot must turn right. Lengths of ...
2
votes
1answer
122 views

Kaboom-y numbers!

Here is a new type of puzzle poem I made. Enjoy! Note: The title is named like that for a reason. I have a number in mind, it is super cool, But there's something you need to know, or you will find ...
3
votes
1answer
171 views

Will forcing chains break this sudoku puzzle?

I am trying to pick up advanced sudoku techniques by practicing with “difficult” puzzles as suggested by my sudoku app. In this puzzle, I am stuck in the position as shown below. I think I can make ...
-2
votes
0answers
59 views

The Hungry Good People

So, there are these 5 good people. They have 5 bowls of roast chicken (one per person). They need to use both a spoon and a fork to eat. Only two people have a pair of utensils. They also are going to ...
13
votes
1answer
486 views

Pentominous - P is for…

This is a Pentominous puzzle. Rules of Pentominous: Dissect the grid into regions of 5 cells each. No two regions of the same shape can be adjacent (but they may touch at a corner). Rotations and ...
4
votes
3answers
161 views

Are we scoring numbers now?

So from a couple other puzzles, you might remember that I'm a professor of Awesomeness at the Ad Hoc University! This time, I've given my students some numbers and their scorez. They need to tell me ...
16
votes
1answer
448 views

Lap Theory Optimal Betting Game

Three prisoners are seated at a table. Each of them has a mobile phone on their lap, and they are not allowed to look at anyone else’s phone (and obviously no other form of communication is allowed). ...
-2
votes
0answers
973 views

Need Your Help Please [closed]

When all is shadowed, dark as night, Just look for me out in the light. from June's Journey Railway Riddles
15
votes
1answer
292 views

Renegade, epitasis, and then what?

Complete this finite convoluted sequence of words renegade, epitasis, nihilist, etiolate, gallinae, ...
17
votes
1answer
280 views

Pentominous - Niftily

This is a Pentominous puzzle. Rules of Pentominous: Dissect the grid into regions of 5 cells each. No two regions of the same shape can be adjacent (but they may touch at a corner). Rotations and ...
1
vote
1answer
115 views

Unusual connections of numbers

Let's have the equation $(DX)^2-Y^2= ± Z^5$ and $x,y$ two positive integers greater than zero. From some facts we can obtain solutions of the above equation by giving integer values at $x,y$. Examples:...
0
votes
1answer
149 views

Z1 = 1, Z2 = 36, Z3, Z4 = 38346, Z5 = 1246285 … Zn, find Z3 and Zn?

$Z_1 = 1, Z_2 = 36, Z_3=?, Z_4 = 38346, Z_5 = 1246285, ...$, find $Z_3$ and $Z_n$? For info I have already $Z_n$; I just want to compare the results. And if you want more value from this series I can ...
4
votes
5answers
571 views

Covid19 puzzle - count of people in a mall [closed]

There is a mall with 4 entrances, in each entrance is standing a doorman with a counter who counts the amount of people who entered through that entrance. If the counter reaches 200, the doorman ...
2
votes
2answers
125 views

3 switches and 4 lights

The are three switches (1, 2 and 3) and four lights (A, B, C and D). Each switch turns on exactly two lights and no two switches turn on identical lights. You know that Lights A, B and C are on when ...
5
votes
3answers
300 views

A Collatz Conjecture for a Classic Conundrum

There is a famous puzzle that asks for the next line (and the rule) for the following pattern: 1 11 ...
6
votes
1answer
419 views

My prefix starts with blood, My whole is the sight of blood

My prefix starts with blood. My suffix gives you permission. My infix goes really fast. My whole is the sight of blood.
6
votes
1answer
87 views

Alphabetized Around: an Around-the-Bend

This is a variety crossword type called Around-the-Bend Rules Each word goes from left to right on its numbered line, and then continues from right to left on the next line #20 wraps back around to #...
4
votes
1answer
109 views

The clock with a note

I bought a regular analog clock, and it came with a note saying: Take yourself a picture Around a special time And though you will not hear my tick You'll see it just fine How can this be?
2
votes
0answers
47 views

is this 4x4 cube solvable? [duplicate]

Everything is in position except these two corners, but I can't seem to find a solution.
1
vote
4answers
250 views

Express numbers 1 - 100 using only 1, 2, 3, 4

The least number that cannot be written using the numbers 1, 2, and 3, each exactly once, and any combination of standard arithmetic operations (including factorials) is 41. What is the least such ...
12
votes
1answer
179 views

An invitation to tapas for you, plus one

Alas, this is not an invitation to a tasty meal for you and your sweetie, but rather an invitation for you to try out these two Tapa puzzles. And the plus one? That's how the puzzles are related: if a ...
1
vote
0answers
87 views

Robot's Step, Step, Sent Back!

So there is this robot. Its origin is at (0, 0), index 0. Each pair of coordinates will have same numbers for x and y. How the robot moves is this: ...
7
votes
2answers
330 views

Who was my uncle?

I had an uncle, he was a Major in the Air Force. He became a well-known baseball player, and then a videogame character! Finally, he finished his life as a brilliant physicist (for real this time). ...
-2
votes
0answers
80 views

a winged superhero riddle, i need the answer as soon as possible [closed]

the riddle/puzzle: The winged superhero who privately vacuumed with the help of the mutants. Need the answer as soon as possible, thanks a ton
1
vote
1answer
82 views

Is it too early to think about Christmas?

I received an odd present today in a shiny red wrap. I was a little surprised as it was no where near Christmas yet but excited at the same time. I tried to tear the present open but was unable to do ...
0
votes
0answers
44 views

How can I prove there exits a Hamilton path from a vertaix to the other [closed]

I know a Hamilton path on the 4 × 4 (n * n)grid that can starts at the top-left corner and ends at the top-right corner, but how can i prove it in word or math ?not program
8
votes
1answer
315 views
+50

An eye for style

My colour-blind friend and I play in the same Dungeons and Dragons campaign. Our party had just died in a horrendously managed battle against a dracolisk (seriously, don't ask!) and so we were back to ...
-2
votes
3answers
68 views

Using pi and tau [closed]

Only using /pi and /tau (2pi), make as many numbers as you can from 1 to n, where n is a whole number. Restrictions: You can use basic operations such as +,-,*,and /. You can also use operations ...
6
votes
5answers
1k views

A robot making increasing steps

A robot starts on a cell in an infinite grid. On the first turn it can move 1 cell horizontally or vertically. On the $n$-th turn ($n>1$) it can move $n$ cells horizontally or vertically, but it ...
5
votes
3answers
328 views

Color Crossword

Okay, I made this puzzle months ago. I remember the rules, but not the answer. Each row is a word and each box holds one letter. Boxes of the same color are the same letter as well; as there are only ...
2
votes
1answer
88 views

Who broke your window? [duplicate]

One snowy night, you were sitting in your house sitting near a nice cozy fire. All of a sudden, a snowball came crashing through the window, destroying it. You hear voices of laughter and sounds of ...

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