# All Questions

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### The Roomates' Dilemna

2 roommates - Arjun and Bishan - rent a house with two rooms for a month. One room is 700 sqft in size and the other 300 sqft. Let's say that the rent is Rs. 100 for 1 month for both rooms combined. ...
31 views

### The Tripan Balance

The tripan balance is used for comparing different weights. For example, when the pans carries 7 balls,5 balls and one is empty. The heaviest tilt to lowest level while the empty pan is at the highest ...
98 views

### “Brainf*ck, but not really.”

Yesterday, I organized a contest with various challenges the participants had to solve. I put 6 very simple puzzles that were solved almost instantly, and the deadline was supposed to be until Sunday. ...
58 views

### What are the missing numbers in this group of 7?

The following groups of 7 number in each line, are related in each line in a unique way: ...
336 views

### Get to the guest chair without turning your back on the host or the audience

On many TV talk shows, the guest enters the stage from the right side (from the audience’s perspective), walks past the front of the host’s desk, then turns around just before sitting in the guest ...
108 views

### Riddle -What am I?

I got this riddle from a friend who told me that he invented it himself. Please help me with this riddle! I am creamy, but I'm not cream. I'm steamy, but I'm not steam. I'm dreamy, but I'm not ...
204 views

### Heyawacky: Ace of Cups

This is a Heyawacky puzzle. The rules are the same as Heyawake, but non-rectangular regions are allowed. Rules of Heyawake: Shade some cells of the grid. Shaded cells cannot be orthogonally ...
138 views

### Knights and Knaves on a (Not So) Deserted Island

One day, while flying your single-engine seaplane out over the Pacific, the electrical system shorts out, all of your electrical systems (including the radio) fail, and the engine dies. You are in a ...
545 views

### Eric Andre had a dream

Eric Andre had a dream. What did he dream? Hint $\downarrow$ (the answer does require knowledge, though I'd assume it's pretty common to know about it) Not part of the puzzle. TL;DR This is my ...
341 views

### 100 Years of GCHQ - A quick afternoon puzzle!

I'm off to the Science Museum London tomorrow, to the Exhibition celebrating 100 years of GCHQ. As such, they sent me a little reminder email this afternoon. On the bottom of the email was the ...
753 views

### What is the question mark?

My friend gave me this sequence of numbers： 3=11 6=12 11=13 14=14 361114=A A=? Which number can replace the question mark?
475 views

### Mind ya, it's Homophones Everywhere!

No gibberish, let's jump to the riddle! I am a NAME. Remove a letter, I am what a name may stand for. Remove yet another letter, I am another name of another type. What on earth am I? Oh, ...
134 views

I wrote this riddle years ago while walking around a shopping center in Sydney and I didn't think to write the answer down. So taking all guesses on what the answer should be. When one is not sour, ...
1k views

### A Magic Diamond

Place 15 different positive integers on the vertices of this graph so that the ten products of three numbers in a straight line are all equal.
106 views

### That Ain't Right… #4

Here's a small head-scratcher for you all today. In the above position, it is White to play and mate Black in four moves, assuming that Black plays their best moves. However, there is a catch—there ...
196 views

### Dodgy Dies: The Puzzling Premiere

Inspired by the "Treasure Hunter Monolith" minigame from Danganronpa V3 Dodgy Dies Guide Terminology Block - a single die on the grid. Cycle - a list of blocks Value - the ...
1k views

### Heyawake: An Introductory Puzzle

This is a Heyawake ("divided rooms") puzzle. Rules of Heyawake: Shade some cells of the grid. Shaded cells cannot be orthogonally adjacent; unshaded cells must be orthogonally connected. ...
176 views

### Rebuses around the home

What words are being clued here? Can you find a household object not shown in any of the pictures?
174 views

### What is a NaturaW 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 NaturaW Word™. Use the ...
2k views

### Locked room poison mystery!

Aaron and his sister Bethany call the police when their live in Grandmother, Candice, failed to get up for breakfast. She was old and ill, and they feared the worst-- especially then they were unable ...
126 views

### Any help with this code (source text based game)

Source: Torn.com (text based rpg game) 31 30 35 20 31 32 31 20 31 30 31 20 36 38 20 37 30 20 37 31 20 35 34 20 31 31 39 20 31 31 34 20 37 34 20 37 35 20 36 35 20 31 32 32 20 31 30 36 20 35 33 20 31 ...
169 views

### Piece de Resistance - Five Flowers with One Missing

Five - Flowers with One Missing This puzzle is part of the "Piece de Resistance" series. Go back to Part 1 (Ace) for the story.Ace Two Three Four Five ... Removing the silver matter, you see this ...
203 views

### The Hidden Treasures

My friend made this riddle and I think it’s pretty well made with lots of components, so here it is: ...
72 views

### What does this message in paper say? [on hold]

You wake up in an old horse wagon and get a piece of paper with strange symbols. What does it say? //Anyone can help me. Please!
146 views

### What is a Freecell 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 Freecell Word™. Use the ...
142 views

### What is a Macho 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 Macho Word™. Use the ...
143 views

### Hunting for treasure in 1-d grid [duplicate]

In a castle, there are N rooms in a line. Each room has a door to the two neighbouring rooms (or the one neighbouring room, for the rooms at either end). A treasure is hidden in one of the rooms. ...
2k views

### Locked Room Murder!! How and who?

Police receive a 911 call from Adam's neighbor, Bob. Bob heard a gunshot! The Police rush over to Adam and Bob's apartment building. The land lord, Charlie, shows the police to Adam's room. The door ...
1k views

### A trip to the library

I try to go to the library at least once every month, so I've developed a pretty good relationship with the librarian, a nice old man who sometimes teases me about my broad set of interests. Yesterday,...
806 views

### Big number puzzle

I saw this on rec.puzzles many years ago, but can't find the reference to credit the source. I am thinking of a large number. If you want to multiply it by a two digit number $ab$ with $a \lt b$, ...
160 views

### I Need Help Solving A Riddle - Its Just An Image?

So I was in this hackathon competition where they promised the people who placed in the top 3 a lot of money and then they delayed the results two weeks. Yesterday, when they were supposed to announce ...
113 views

### Any help with this code [on hold]

Any help with this code? It decrypts to plaintext word or words I'm stuck, so any help is appreciated. 31 30 35 20 31 32 31 20 31 30 31 20 36 38 20 37 30 20 37 31 20 35 34 20 31 31 39 20 31 31 34 ...
223 views

### Tempoverlustspiel

Tempoverlustspiel-A German word that roughly translates to "loss of tempo game." An interesting chess term that I leaned a while ago With White to move in the below position, how many moves will it ...
4k views

### How was the murder committed? [on hold]

Alice's body is found inside a locked room. She had been getting ready for the day, and had only just gotten out of the shower and had written a letter when she died. The police had to break the door ...
319 views

### They are all tied together

There are four different things shown below One Vertical One Horizontal Two diagonal All have one common thing (the ? box) which ties them together What is it?
165 views

### Don't bully your cousin at Reversi

Title (only) inspired by Don't bully your little sister at chess Prologue Well, this happened when I played Reversi with my cousin a few days ago... I, not being as nice as @Arnold ...
744 views

### Regex crossword (sudoku?)

I can't believe this old-but-gold piece hasn't been shared here. It's a regex crossword puzzle! Here's a nicely printable PDF. Kudos for this one goes to a competition held by MIT in 2013. The ...
101 views

### I need help solving a riddle! [on hold]

I've been trying to solve this riddle and I've no idea of what the answer may be: "the key you seek decomposes in decades, and shall unlock the mystery once all is vibrant."
337 views

### Piece de Resistance - Four Dots in a Line

Four - Dots in a Line This puzzle is part of the "Piece de Resistance" series. Go back to Part 1 (Ace) for the story.Ace Two Three Four Five ... Looking for the next challenge, you got rid of the ...
778 views

### Flood on the top floor

There has been a water incident on the top floor of a building, and one apartment has suffered some water damage. As in, a lot of water damage. The entire apartment is filled waist deep with ...
176 views

### Enigma between Colleagues (Part2)

Let's give a second try with something more creative. Here is the sequence : 161 = B 198 = W 173 = ∅ 246 = B 215 = W 227 = B 192 = ∅ 184 = ? Don't hesitate to ...
3k views

### The cat exchanges places with a drawing of the cat

Given CAT RENDERING see if you can get them to exchange places, resulting in RENDERING CAT by ...
105 views

### Where in the world is this astronomical convergence? [on hold]

At this location on planet Earth, on April 8, 2024, you can observe a total solar eclipse. At the same location, at some time on June 29, 2024, the sun will be directly overhead. Where in the world is ...
302 views

### I'm a really tiny critter. Come close

Come really close and take a look at me. May be you will think I am sleepy May be you will have a couple of questions: Why is he far away at the end? Why are there six in a row then ...
2k views

### These were just lying around

What peculiar property do all these words have in common? AMP APP BARF COME CUR EAR GANG GROW IMP ON PEAR PIMP SING STAB TRIP Afterword:
205 views

### Enigma between Colleagues (Part1)

With a colleague, we tried to create enigma to challenge ourselves. Here is our first try, hope you will enjoy it. 4 = 2 12 = 3 19 = 3 24 = 4 47 = 5 50 = ? Hint 1 : Don'...
250 views

### What is a Target 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 Target Word™. Use the ...
9k views

### A Non Math Puzzle. What is the middle number?

There are three patterns below. Two diagonal and one vertical. The middle number is common to them all What is it? It is not mathematical per se. NO partial ...