# All Questions

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### What is the corner house number?

The Singh family lives in a housing development full of Scientists and engineers (god forbid!). The Home Owners have come up with weird ways of numbering their houses. K Street is all engineers ...
419 views

### Don't bully your little sister at chess

This puzzle was inspired by @RewanDemontay's puzzle De-zephyr The Solution!. Rewan kindly granted me permission for making this puzzle and citing his as my source of inspiration. I thought of naming ...
519 views

### What is a Keyboard Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Keyboard Word™. Use the ...
171 views

### Mensa Norway question 32?

The answer is the bottom left option, but I can't quite figure out why.
79 views

### Seed is to sprout as [closed]

I came across this question and couldn’t find an answer to it. The question goes like so: Seed is to sprout as A. Plant is to grow B. Garden is to weed C. Dawn is to morning D. Teenager is to ...
464 views

### (8 of 11: Ripple Effect) What is Pyramid Cult's Favorite Skill?

Dear PSE users and moderators, I’m new here in PSE, but I really need your help. There was this person who gave me a black envelope consisting 10+1 pages of puzzles, and also a scribble saying: “Find ...
210 views

### What is a Check Word?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Check Word™. Use the ...
198 views

### Is there a name for this kind of anagram?

I was thinking about anagrams and I was wondering if there was a name for anagrams that keep the relative order of the letters, but instead rearranges them by moving the starting point of the word and ...
507 views

### Hiker's Cabin Mystery | Pt. XIV (we skipped a number, I know)

(We skipped a number to avoid bad luck!) (READ THE SOLUTION TO PT. VIII BEFORE CONTINUING) You lead the hiker through passageway and you both seem to be alive by the time you come into a giant, ...
115 views

### What is a Zirconium Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee. I copied the array code - hope you guys don't mind. =) If a word conforms to a special rule, I call it a Zirconium Word™. ...
1k views

### Properties: Left of the colon

Here are three short 'property' puzzles I wrote. In each puzzle the words to the left of the colon all have a (non-trivial) property that the word to the right of the colon does not have. What is ...
271 views

### Trapped in Time

A Greek trapped in time by a Roman refine Mother precedes we'll never be freed Circling around waiting to be found perhaps by my shipmates if they've not met their fates Who am I? And where can ...
185 views

### Numbers in this table?

I found this table, but can't seem to find any relation between the numbers. Also there is not much logic involved. ...
601 views

### Piece de Resistance - Introduction & Ace and A's

OP's Words This puzzle is part of the "Piece de Resistance" series. Read the following section for the storyAce Two Three Four Five ... Hey guys (and gals), I have worked on this for weeks, took me ...
494 views

### What is a Written Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Written Word™. Use the ...
280 views

### Volcanic 3D masyu

This is a three-dimensional masyu puzzle. The six squares depict the layers of a $6\times6\times6$ cube. The goal is to make a single loop in 3D space which fulfills the following properties: The ...
721 views

### Should I use (1,3) or (1-3) or (4)?

I'm making a set of clues and I have a problem with this one: Roentgen's letter Should I use (1,3) or (1-3) or (4) for the enumeration?
274 views

### Alice and Bob play at cards

To pass the time Alice and Bob play a simple game of chance where cards are drawn in pairs from a shuffled standard 52-card deck. If two red cards are drawn Alice wins the round. If two black cards ...
5k views

### A Checkmate of Dubious Legality

Full-size image Black has just delivered checkmate in the above position - but is the position legal? If no, explain why. If yes, give Black's mating move. FEN: 3r4/2r4b/8/8/8/3Kp3/5k2/8 w - - 0 1 ...
161 views

### De-zephyr The Solution!

Here's another original chess problem of mine for you all to solve today! In the following position, White wants to stalemate Black even though they can win, for unknown, unclear, unexplained, and ...
172 views

### Hiker's Cabin Myster | Pt. XII

You continue through the labyrinth by taking passageway Now, there's another crossroads with 26 passageways, one for each letter of the alphabet. This is going to be tough, isn't it? There's also a ...
680 views

### (7 of 11: Fillomino) What is Pyramid Cult's Favorite Shape?

Dear PSE users and moderators, I’m new here in PSE, but I really need your help. There was this person who gave me a black envelope consisting 10+1 pages of puzzles, and also a scribble saying: “Find ...
292 views

### Oh go dear! again… we Here

What is the missing one? $\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$ [Some colours look alike, sorry about that, but then again you don't really need to be able to make a visual difference between them, ...
103 views

### What value will be replaced by question mark? [closed]

I can't find any answer The options are: (a)18. (B) 16. (C)10. (D)12!
422 views

### Find the missing country

Below is a list of ten countries, with one missing. Find one attribute (for example, the population) of each country, so that if you take the first number or first letter of each country’s attribute, ...
695 views

### A wiild aanimal, a cardinal direction, or a place by the water

I'm in the north. I can be accompanied by violent crimes, a relative direction, or a body of fresh water. I'm in the east. I can be accompanied by a wiild aanimal, a cardinal direction, or a ...
654 views

### Ernie and the Superconducting Boxes

I was in anticipation all last week. Ernie, who had been travelling for several months, was finally coming home. So over the weekend I dropped in on him. He was bursting with news. "Some wonderful ...
362 views

### Statue Park: Apollo 11

This is a Statue Park puzzle, made in honor of the 50th anniversary of the Apollo 11 mission. Rules of Statue Park: Shade some cells of the grid to form the given set of pieces. Pieces may be ...
157 views

### Awkward riddle that is confusing [closed]

What do I find funny about the following statement?: ~E ∨ G Hint:
166 views

### I need a solution for this puzzle [closed]

This is meant to be a simple puzzle Given that: 3 - 4= -1 5 + 3= 7 2 + 6= 15 30 / 6= 20 Find: 20% of the sum for the final answer Hint: Final Answer Format: 00/0=0 (/ = ÷) (Divide Symbol)
271 views

### (6 of 11: Yajilin) What is Pyramid Cult's Favorite Places?

Dear PSE users and moderators, I’m new here in PSE, but I really need your help. There was this person who gave me a black envelope consisting 10+1 pages of puzzles, and also a scribble saying: “Find ...
176 views

### Find the missing element?

I've been trying to solve this for quite some time, can you help me solve it? This puzzle was made by one of my friend's teachers. This is not copyrighted and cannot be found anywhere on the internet. ...
502 views

### Solve the mystery of the poisonous chemical

Dr. Joblet just produced a new chemical called C-15. It was found to be the most poisonous chemical such that even touching it could kill anybody. He produced the chemical in his own laboratory which ...
347 views

### Was “Crook's algorithm” for Sudoku really only developed in the 21st century?

The following algorithm for simplifying (and very often completely solving) Sudoku puzzles: Label each cell with the set of all possible values it could take. Pick a row/column/block and for a value ...
1k views

### A game of red and black

Two players, red and black, play a game. The outcome is as follows: CCCBBABCDFBBDDE Who won the game, and what game were they playing? HINT:
192 views

### How to solve this specific situation in 2048?

In trying to develop and perfect my strategies, I've been playing 2048-undo. This is what I got myself into: Since this is not an uncommon situation and I still don't know how to properly get out of ...
521 views

### Secret message 01

116313333134261542156511321455121126113213151461123615112516114142 OK, so recently I made up a way of sending coded messages and I was just wondering how difficult it would be for someone to crack. ...
3k views

### The grades of the students in a class

You are a new Math 102 professor in a university class of 88 students and would like to learn their grades from previous semester to know your students better and put a note of it to get an idea how ...
4k views

### No Shirt, No Shoes, Service [closed]

I was walking outside on a hot summer day, when I suddenly got hungry and walked to a restaurant to eat. I tried to go in, but I was rebuffed at the door. The server pointed to a sign outside that ...
176 views

### Puzzles with multiple, user-specific, solutions

I have been tasked with coming up with a puzzle given the following constraints: Users (possibly 200 in all) will arrive at a fixed location and see a portion of the puzzle, which will be common to ...
237 views

### What is a Mono Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Mono Word™. Use the ...
372 views

### Tricky Tropical Water Temperatures

Herman lives in a house on the Caribbean island of Kinja, where the weather is warm all year. Let’s assume all Kinjan houses are of similar construction, and no houses have a water heating system. ...
3k views

### Help me, I hate squares!

There is $5$x$5$ equidistance matrix dot given as below; You need to remove dots from the figure where it will be impossible to form a square by drawing lines between dots at the end. So what is ...
165 views

### 3D devilry, DIY edition

This is a diagramless three-dimensional cryptic crossword. Solve the clues and then fit the answers into a three-dimensional grid. The numbering of the clues starts from the #1 (nearest) layer. On ...
256 views

### Introducing WorDonimoes$^2$

@Don Kirkby have designed a set of dominoes puzzles that they call Donimoes. You slide the dominoes like the cars in Nob Yoshigahara's Rush Hour puzzle, always along their long axis. I have altered ...
355 views

### (5 of 11: Slitherlink) What is Pyramid Cult's Favorite Person?

Dear PSE users and moderators, I’m new here in PSE, but I really need your help. There was this person who gave me a black envelope consisting 10+1 pages of puzzles, and also a scribble saying: “Find ...
350 views

### What is a Tetris Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Tetris Word™. Use the ...
865 views

### Violations of the law

I live in A but work at B. The two are 45 minutes apart and I could commute back and forth either by driving or by taking the bus. Every day, before going from A to B in the morning and before going ...