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11
votes
3answers
801 views
6
votes
1answer
88 views

The Riddle - I Own the Value Less Than Nine

I own the value less than nine; Mother makes me if child get cry; Manager checks me to find which is high; Lose me, addicts might be about to die; I have various inside and outside; Who/...
3
votes
2answers
31 views

Princesses covering an 8x8 chess board

What is the minimum number of princesses you need to place on an 8x8 chessboard so that every empty square is attacked by at least one princess? A princess is a piece from fairy chess that can move ...
8
votes
2answers
1k views

The magic square with a hole

Alice loves magic squares. She has a 4x4 square, where she can put a number in each cell. But alas! Some evil person has poked a hole in her square. Alice is really really sad because she can't make a ...
3
votes
0answers
15 views

Reccuring Meeting

The computer scientist's assistant is late at work once again, trying to once again decode their bosses directions for the day. Under meetings, the boss has listed only a single meeting: ...
4
votes
2answers
114 views

The scales never lie (oh yes they do!)

There are $10$ coins, one of which is a fake, and weighs either more or less than the others - you don't know which. There are two sets of scales - one tells the truth, the other lies (always says ...
6
votes
7answers
734 views

You see a boat filled with people

You see a boat filled with people. It has not sunk, but when you look again you don't see a single person on the boat. Why?
5
votes
2answers
65 views

Twelve Labours - #02 Lernaean Hydration

This puzzle is part of the ‘Twelve Labours’ series. Previous instalments can be found here: Prologue | 01 His first labour now complete, Hercules made his way up the street to the storage depot for ...
1
vote
0answers
222 views

Give the name of this “outlaw”

Find the name of this well known "outlaw" who/what can be characterized as a: stunning fresh shiny bandit Okay. Hint:
2
votes
3answers
40 views

What Fruit Am I?

A riddle my math teacher asked back in 10th grade: I am a fruit. If you take away the first letter of my name I become a crime. Take away the first two letters of my name I become an animal. Take ...
7
votes
1answer
395 views

Piece de Resistance - Nine is Three Tripled

Nine is Three Tripled This puzzle is part of the "Piece de Resistance" series. Go back to Part 1 (Ace) for the story.Ace Two Three Four Five Six Seven Eight Nine... Here is the transcription of the ...
7
votes
1answer
86 views

You may need me after too many

My first, a sight to behold before a drink My second, in the drink My third, a place for a drink My last, what may arise among lads after some drinks What am I?
3
votes
3answers
57 views

What patterns could be applied in order to solve a Sudoku?

Related to this Q&A. I am looking for a pattern that could be applied in order to solve this Sudoku. The current patterns that I apply: Ensure that every digit appears once in every block Ensure ...
24
votes
1answer
1k views

The Hidden Treasures

Credit: Brandon X. My friend made this riddle and I think it’s pretty well made with lots of components, so here it is: ...
22
votes
9answers
3k views

Stare long enough and you will have found the answer

Good luck starting this puzzle. You'll stop where you always do. My middle is in the ending. You can see on the outside that I skipped school, but beneath that you'll find I'm deeper. What am I? ...
12
votes
4answers
2k views

It's right here. It's very very far

IT IS DIVINE IT’S A KILLER IT’S A GIFT IT’S A MEASURE IT’S A SOLID IT’S A LIQUID IT’S QUICK IT’S A CAR IT’S HERE IN A GLASS HOUSE IT’S VERY VERY FAR ...
5
votes
3answers
442 views

Riddle: I'm like Death and Childbirth

I'm short and I don't snore. I'm demanding and can't be ignored. When my time comes it will be inconvenience, living up to the reputation of non-lenience. Though I am not ...
5
votes
2answers
181 views

Knights covering a 9x9 chess board

What is the minimum number of knights you need to place on a 9x9 chess board, such that every empty cell is attacked by at least one knight? Here is a similar question for a 10x10 chess board: ...
1
vote
1answer
60 views

Figure out the pattern

$0,4,8,21,52,65,96$ Given this set of numbers figure out the pattern they follow and write down the next seven numbers in the sequence. Hint:
11
votes
1answer
183 views

Piece de Resistance - Jack in all Tags… But Master in All?

Jack in all Tags... But Master in All? This puzzle is part of the "Piece de Resistance" series. Go back to Part 1 (Ace) for the story.Ace Two Three Four Five Six Seven Eight Nine Ten Queen King... ...
5
votes
3answers
223 views

Don't they see, what they do to me?

I'm the essence of every living being But humans seem to not understand Even though others are always fleeing They keep using for their demand Soon I will just watch from above How evil and innocent ...
4
votes
1answer
187 views

Knights covering a 10x10 chess board

What is the minimum number of knights you need to place on a 10x10 chess board, such that every empty cell is attacked by at least one knight? Good luck!
10
votes
1answer
198 views

Masyu keep making those 3D puzzles?

This is a three-dimensional Masyu puzzle. The five squares depict the layers of a $5\times5\times5$ cube. The goal is to make a single loop in 3D space which fulfills the following properties: ...
9
votes
2answers
197 views

Four hand tiled squares demonstrating a Pythagorean Quadruple

Demonstrating the Pythagorean Quadruple $6\times6 + 6\times6 + 7\times7 = 11\times11$ Using the pieces shown in the $11\times11$ square: The objective: Arrange the pink pieces (four enneominoes) ...
0
votes
0answers
158 views

Find the missing link of this unique chain

Three links are missing from the following line, one of them is a word. The answer is the word. bass gland guitar venom
0
votes
1answer
245 views

Find the common association [on hold]

What is common in the following words? WELCOME (note: originally I thought this was going to be a good puzzle, but it turns out that it might be not that good, because it has been put on hold.)
7
votes
2answers
212 views

Double feature: In concert

This puzzle is part 3 of the Double feature series (first part here). The series will continue in "Double feature: Hot stuff". Rules of Ripple Effect1 Fill the grid so that each cell ...
13
votes
1answer
575 views

I love fishing, dancing, playing, crafting, and fighting

I'm not a sketch, but I can be drawn, I'm not origami, but I can be folded, I'm not a pill, but I can be swallowed, I'm not a haircut, but I can be short or long, I love fishing, dancing, playing, ...
7
votes
1answer
159 views

Double feature: Russian desman

This puzzle is part 2 of the Double feature series (first part here). The series will continue in "Double feature: In concert". Rules of Masyu1 Make a single loop which goes through ...
13
votes
9answers
3k views

Which person is telling the truth?

A person was killed. There are 4 suspects. A says C is the killer. B says C is the killer. C says that B is lying. D says that it wasn't him. There is only one person telling the truth. Who is this ...
15
votes
5answers
445 views

You cannot have 120 degrees of separation, but how close can you get?

If you take a look at a standard three-hand gear-driven analog clock, there is never(see footnote) a time of day where the hands of the clock divide the face equally into 120 degree segments, but you ...
11
votes
1answer
392 views
+50

An Era of Change

Despite their appearances, the following are not ways of change... at least, I hope not. Kids shows (8+?) Lizard (6+?) Missiles group (5+?) Body manipulator (4+?) Bird (3+?) ...
14
votes
2answers
1k views

Beware! Beware!

What are, famously... Ebon, sienna High, low Within, without, ubiquitous Distant, close Absent, present Swift and slippery, not to be trusted
4
votes
1answer
2k views

What is the the name of the mother's son?

Say the name of the mother's son A mother had a son who had three children. He named the first one Myko because he was a psycho. The second one he named Jim because he had an interest in sims. ...
4
votes
2answers
317 views

8x8 grid with no unpainted pentominoes

What is the smallest number of cells you need to paint in an 8x8 grid, such that it contains no unpainted pentominoes? Can you find multiple solutions? Note that a pentomino is a set of 5 adjacent ...
0
votes
3answers
62 views

4x7 rectangle divided into 7 different rectangles

Can you divide a 4x7 rectangle into 7 rectangles all of different area? Can you find multiple solutions? Good luck! P.S. @Deusovi wanted me to make puzzles that have an "aha moment", so here is my ...
3
votes
4answers
201 views

The hard-to-understand chain

I have a chain. I can extend this chain indefinitely. For beginners, this chain is hard to understand. They call it magical, yet it is not in reality. I used to only declare. But with this chain, ...
6
votes
2answers
397 views

10x10 grid with no unpainted hexominoes

What is the smallest number of cells you need to paint in an 10x10 grid, such that it contains no unpainted hexominoes? Note that a hexomino is a set of 6 adjacent cells (horizontally or vertically). ...
4
votes
1answer
123 views

Prime magic star

Can you replace the letters with 10 consecutive primes such that the sum of numbers on each line is equal? I expect this to be solved with a computer. Good luck!
-4
votes
0answers
65 views

Find numbers 30-50 using numbers 2,0,1,9 only, with PREMDAS [duplicate]

You can only use numbers 2, 0, 1, 9, but they do not need to be in order. You can only use the numbers once unless they are used again as an exponent. You can only use subtraction, addition, ...
1
vote
2answers
64 views

How to fill up the numbers in a set of empty discs drawing a pentagon?

The following pentagon is composed by $10$ discs. Each disc must be filled with one number. The allowed numbers to be used are the first $10$ even positive numbers. The sum of the numbers to be placed ...
2
votes
1answer
179 views

Identify the grid that does not fit into the pattern

In the two rows the grids in each row form a set that implement a pattern, so there are two patterns and they are somewhat similar to each other. Between the elements of the two rows there exist a ...
0
votes
3answers
105 views

Family Relations

Now I am not sure if these kind of questions are allowed on this site but I found it interesting so here i go A points to B and says " His grandfather adopted my grandfather " . Now what is ...
5
votes
1answer
211 views

Room 213: Because of the Reindeer

Credit: Brandon X. This is part of a larger riddle room puzzle. Other rooms: Room 11 Once you enter the door labeled “3”, the door immediately shuts behind you. You are immediately in a room of ...
8
votes
0answers
311 views

The Riddle - I Could be Used in Many Ways

In whole, you may use me in the measuring. With my $1^{st}$ & $2^{nd}$ part, you may use me in the coloring. With my $2^{nd}$ & $3^{rd}$ part, you may use me in the casting. ...
8
votes
1answer
229 views

What is an Encoding Number™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with Number version puzzles. If a number conforms to a special rule, I call it an Encoding Number™. Use the following ...
0
votes
2answers
36 views

How to flip top row center pieces on a 4x4x4 Rubik's cube? [duplicate]

I'm trying to solve a 4x4x4 Rubik's cube by first reducing it to 3x3x3 and I'm stuck in the end. I've completed all sides, matched all corners, but two pieces remain and I can't figure out how to flip ...
3
votes
1answer
122 views

10x10 divided into the most number of rectangles of different area

How can a 10x10 be divided into rectangles such that there are as many as possible and they all have different area? Can you find multiple solutions that are not mirror/rotation of each other? Good ...
0
votes
1answer
43 views

7x13 rectangle divided into 13 different rectangles

Can you divide a 7x13 rectangle into 13 rectangles all of different area? Can you find multiple solutions? Note that rotations and mirrors don't count as separate solutions. Here is a similar puzzle ...
3
votes
1answer
140 views

Partition a 3x3 square into rectangles [on hold]

Yesterday I watched "The man who knew infinity" about the amazing Ramanujan. Inspired by the partitions problem from the movie I came up with a puzzle: In how many ways can you partition a 3x3 grid ...

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