# All Questions

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3 views

### 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 ...
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 ...
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, ...
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 ...
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, ...
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 ...
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 ...
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, ...
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 ...
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:
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 ...
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 ...
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 ...
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.
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. ...
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 ...
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.,...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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). ...
973 views

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

### Renegade, epitasis, and then what?

Complete this finite convoluted sequence of words renegade, epitasis, nihilist, etiolate, gallinae, ...
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 ...
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:...
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 ...
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 ...
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 ...
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 ...
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.
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 #...
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?
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.
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 ...
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 ...
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: ...
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). ...
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
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 ...
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
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 ...
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 ...
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 ...