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10
votes
2answers
302 views

Fun with Flags part 9: a different design

We are looking for a 3-word phenomenon. Hint 1: Hint 2: Hint 3: Hint 4: Other (independently solvable) puzzles of this type: 1, 2, 3, 4, 5, 6, 7, 8.
2
votes
1answer
68 views

This day in history VIII

What historical event happened on this day (11th May). Can you explain the clues? Also, well done to El-Guest who got the answer to This day in history VII. A man of great mind Bested by the first ...
5
votes
1answer
296 views

FORTY9 Cryptarithm

This puzzle is due to the amazing Martin Gardner and I found it here. Can you find which digit each letter represents to make the following sum work? Each letter is a single unique digit between 0 ...
6
votes
1answer
147 views

Follow the path of relation through the grid #3

There is a relation between rectilinear-adjacent squares such that there is a unique rectilinear path from the top-left corner of the grid down to the bottom-right corner of the grid. Each square can ...
7
votes
1answer
172 views

Follow the path of relation through the grid #2

There is a relation between rectilinear-adjacent squares such that there is a unique rectilinear path from the top-left corner of the grid down to the bottom-right corner of the grid. Each square can ...
13
votes
1answer
246 views

Follow the path of relation through the grid #1

There is a relation between rectilinear-adjacent squares such that there is a unique rectilinear path from the top-left corner of the grid down to the bottom-right corner of the grid. Each square can ...
11
votes
2answers
382 views

Make -132,680 from these operations

Make the result $-132,680$ using these operations and numbers: Numbers (cannot be used more than once, but not all need to be used): $2,4,6,8,9,10,11,12,23,27$ Operations (all operations have to ...
6
votes
1answer
89 views

Mathematics Puzzle - Number Circle

The numbers 1, 6, 8, 13, 15, and 20 can be placed in the circle below, each exactly once, so that the sum of each pair of numbers adjacent in the circle is a multiple of seven. In fact, there is more ...
7
votes
1answer
497 views

Cryptic Family Reunion

GAMES World of Puzzles publishes family reunion puzzles, where ten thematically related answers are clued with anagrams less an extraneous letter, with the theme to be discovered. I thought this type ...
6
votes
2answers
240 views

find the word in a multi-stage internet scavenger hunt

The answer can be anything. For you can search a lifetime. To discover the bookmarked answer. You must traverse down the long long walls. Using the number of walls of each frame. The key hides twice ...
7
votes
1answer
259 views

New maths puzzle

The objective is to blacken certain boxes. The numbers outside represent the sum of the numbers contained in the white boxes in the corresponding rows or columns.
3
votes
2answers
223 views

A book of mystery - Page III

SHOOVER GOT PAGE 2 (THE ANSWER TO WHICH WAS MCDONALD'S ISLINGTON) AND SOLVE PAGE THREE TO GET A HINT TO SOLVE THE NEXT PAGE. Just as was for solving the first Page number three had started to burst ...
7
votes
4answers
1k views

What was the last move made in this game?

What was white's last move in the game shown below? Note: This is a screenshot taken from an actual game and all moves made were legal. ETA: The last move played by white was the last move of the ...
13
votes
2answers
422 views

Say me out loud, I'll get stronger

Say me out loud I’ll get stronger Rearrange me It will just make me larger I’m triangular and angular Can be turned into one Left a whisper While staring down Had a groovy ...
6
votes
0answers
123 views

Ode to a Nightingale: a puzzling study in literary criticism

The field of literary criticism is an interesting and fruitful one, in which puzzlers might carve out a niche. This was recently brought home by a conversation I had with a sagacious old gentleman in ...
5
votes
2answers
820 views

How to make a “virgin” Google search?

Disclaimer: this question is intended to be asking for help about puzzle creation, but in a way it can be regarded as a puzzle in itself - except I don't claim to have a very good answer. When you ...
7
votes
1answer
172 views

The sadistic chieftain and the lethal truel game

In an adventure to a remote island, you get caught by the xenophobic locals and are about to be executed. But the tribe chieftain, known for his sadistic taste, suddenly changes his mind. "I'll ...
26
votes
7answers
4k views

Unexpectedly Difficult Matchstick Problem

The words say: 听说只有智商高达200的人才有办法打出来 (only people with 200 iq can solve this). 只移动1根火柴让算式成立 (move only one match to satisfy the equation) note: it is not my puzzle and i do not know the solution
6
votes
1answer
179 views

Great Imagination (The beginning)

First, I'm the largest. Second, I'm lucky. Third, I'm quite similar to infinity. Fourth, I'm nothing. Fifth, I'm lucky. Sixth, I'm half of Third. Seventh, I'm lucky. Eighth, I'm like the ...
4
votes
1answer
110 views

Smudged Sudoku - help me solve it!

One late evening I was making my sudoku. I finally finished until water spilled all over the middle-right block. The only thing I remember is the numbers present in the block (but not their position):...
0
votes
0answers
52 views

Query about block and stream ciphers

I don't know if you can help me or not, but I could do with any additional guidance here. I am currently solving a puzzle that needs to use a combination of block ciphers and stream ciphers. I am on ...
5
votes
1answer
119 views

Anagrammatically speaking 3

Fill in the blanks below. Each sentence uses words that are anagrams of each other. In each pair of sentences, solve the first sentence, change one letter of an answer-word from that sentence, and ...
1
vote
1answer
38 views

This day in history VII

This day in history was solved first by Glorfindel with Yuzuriha Inori giving a more detailed answer. Today (9th May), a number of years ago, some sort of event happened. What was it and what do the ...
7
votes
3answers
250 views

Born a X, reaching adulthood no longer a X, but dead, X

Born a X, reaching adulthood no longer a X, but dead, X. What is X? Clue 1
5
votes
1answer
209 views

A crossword (+ a secret message)

What number does this top-secret message point to? Ftq mzeiqd ue: ftq ecgmdq daaf ar fia tgzpdqp mzp fiqzfk ruhq This table and crossword could help: Crossword clues: Across: 5. A ...
3
votes
1answer
131 views

Puzzling.SE top 10 Wordsearch!

Welcome to the Puzzling.SE top 10 word search, lets get solving: ...
8
votes
1answer
185 views

Puzzle of the day - Sudoku Rossini

The arrows outside the grid indicate that the nearest three digits in the corresponding direction are in ascending or descending order (the highest number is always in the direction of the arrow). All ...
3
votes
1answer
117 views

Anagrammatically speaking 2

Fill in the blanks below. Each sentence uses words that are anagrams of each other. In each pair of sentences, solve the first sentence, change one letter of an answer-word from that sentence, and ...
-1
votes
1answer
84 views

Which is higher John's new salary or Brad's salary or equal? [closed]

John's salary is 30% less than Brad's salary. John left work and joined a new institution, where his salary was 30% higher than his old salary. Which is higher John's new salary or Brad's salary or ...
10
votes
0answers
383 views

Impossible Cipher v1.0

When I create riddles, ciphers etc.. they seem to get solved within only a couple of days of writing. Well no more! This cipher may not be impossible but is extremely difficult. If left unsolved for ...
8
votes
5answers
205 views

An $n$-sided polygon with area $n$

Here is a $10$-sided polygon which area is $23$ (i.e. it contains exactly 23 unit squares). Can you draw a polygon with: $6$ sides and area $6$? $8$ sides and area $8$? $12$ sides and area $12$? ...
3
votes
2answers
181 views

This day in history VI

It was defectedWBC who got the last one. Well done! On this day (8th May) an event happened. Can you tell me the event, explain the clues and tell me what year it happened. A sickly-sweet syrup-like ...
2
votes
1answer
99 views

A book of mystery - Page II

I AM SORRY ABOUT THE LAST PUZZLE IN WHICH I MESSED UP THE NUMBERS BUT BEASTLYGERBIL EVENTUALLY GOT THE ANSWER WHICH WAS 'THIS CODE BELONGS TO SAM'. ENJOY! Once the first riddle was solved The ...
7
votes
2answers
150 views

Base compromised

Grid in plaintext The nine highlighted cells contain multiple letters: two or more letters from the down clue, and two or more letters from the across clue (where applicable). The letters in each of ...
7
votes
2answers
125 views

When is a robotic arm able to reach any point (closer than the length of the outstretched arm)?

In a plane, there is a robotic arm consisting of $n \ge 2$ segments of length 1, like this: The first segment is fastened to a single point ("origin"), but it can rotate freely around that point. All ...
9
votes
1answer
299 views

The Very Model of a Number Sequence

Number sequence questions are normally not received well here but I thought this one might warrant a bit more attention as it has the following interesting properties: It is a finite sequence. ...
5
votes
3answers
324 views

Shocks and guesses

The Liar, the Random and Truth teller were captured and brainwashed to forget whether they always lie or tell truth or randomly answer.Everyone is handcuffed to a chair and gagged with gray, white and ...
9
votes
2answers
222 views

Add a divisor! A game

Let $k$ be a positive integer. Amy and Ben are playing a game, with the number $1$ written on the whiteboard initially. Amy and Ben do the following in order, starting with Amy: Suppose the ...
10
votes
1answer
193 views

Interplanetary blips and bleeps

Things were quite different in 3000 AD. We'd discovered other planets with sentient life for instance. Five to be precise. Adam, Bill, Carl, Dave, and Eric we called them, and we used the lately ...
10
votes
1answer
194 views

What is a Computer Phrase™?

In the spirit of the What is a Word™/Phrase™ series started by JLee, a special brand of Phrase™ and Word™ puzzles. If a phrase conforms to a special rule, I call it a Computer Phrase™. Use the ...
9
votes
2answers
936 views

Sudoku Help: Hard

I am unable to finish this Sudoku. All numbers are verified by the app. I'm sure there must be a way to solve this without guessing. Even an online tool couldn't tell me a next number.
11
votes
1answer
601 views

Perfect Golomb Circles

A Golomb ruler of order $n$ is a straight line with $n$ marks (at integer locations) such that no two pairs of marks are the same distance apart. We can extend the concept to circles. Place $n$ marks ...
11
votes
1answer
266 views

Uncle Nestor's travel crossword

Uncle Nestor is a renowned global traveller, and can never stay focused on the one thing for too long. In an attempt to pass the time through the current global travel restrictions, Nestor thought it ...
9
votes
1answer
211 views

Simon Tatham's Gokigen Naname

Lately, I've been interested in Gokigen Naname a.k.a Slalom a.k.a Slant. Luckily, Simon Tatham has a generator for Slant. Usually, the generated puzzle is so-so, but this particular generated puzzle ...
9
votes
2answers
297 views

What I am not riddle ?Say my Name!

I have a number in me, but not Area-51 One of my Creator is a fruit, but he is not a plant I have an unknown, but I am not unknown I have Artificial Intelligence, but I am not a robot Say my Name !...
7
votes
1answer
224 views

Ways to destroy a Square Matrix

Sherlock is solving a case where he came across a puzzle. Suppose you are given a square matrix of size $N$, and a gun with Power $F$. Every cell in the matrix is filled with some number, $x$ (...
0
votes
5answers
163 views

Longest list of celebrity names [closed]

My friend sent me this great puzzle. What is the longest list of celebrity names you can make where each surname is the given name of the next celebrity? For example: Clive James Dean Martin ...
11
votes
1answer
291 views

Floor floor floor inside another floor

Inspired from this question $$ \aleph(x,n)=\lfloor x\lfloor x\lfloor x...\rfloor\rfloor\rfloor\ $$ where $\aleph$ is the inner floor function with $n$ times for $x$. For example; $$ \aleph(x,3)=\...
7
votes
1answer
516 views

What is a Rotting 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 Rotting Word™. Use the ...
6
votes
2answers
262 views

Monks in a temple

Try somehow make sense of the image below. All the necessary information to solve this puzzle is there. Good luck! Edit: The puzzle consists of two parts. First, focus on the blue parts(what's ...

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