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5 votes
1 answer
54 views

With the power to draw you in (and be swept away by the joy of puzzling)

Instructions: Solve the enigmatic crossword Each answer clues a letter Take only the 9 letters which were clued more than once (to find 9 distinct letters) Apply the title and anagram the result for ...
  • 14.6k
0 votes
1 answer
59 views

Missing country in a layout

Which country fills in the yellow cell? A cell becomes empty when no country meets the criterion that the country in a non-empty cell meets.
1 vote
0 answers
31 views

The four knights (rileys)

Four knights were on four hills, some on higher hills than others. The first spoke, and he said: “I begin with my “for” noun, then the one next to me is tumblin’ down, then I… um… ummmm… yeah that’s ...
2 votes
1 answer
67 views

Find the ratio of green to red circles for given patterns

Just a small visual task. Find the ratio of green to red circles, for infinite planes, filled with the following patterns:
3 votes
6 answers
137 views

How many digits does $7^{100}$ have?

I'd like to estimate $7^{100}$ without using these new-fangled computers everyone is talking about, but I think I need your help. Please estimate $7^{100}$ without the use of a computer. My friend ...
1 vote
1 answer
87 views

How many combinations can you make with 3 digits?

So my mom- a teacher - called me and my brother and gave us each a paper and pencil. She said: Think of three distinct single digit positive integers (0 to 9) and write down as many numbers (number ...
  • 1,537
1 vote
1 answer
106 views

An overconfident grandmaster 2

The same grandmaster from An overconfident grandmaster decides to avenge his loss and prepares for rematch. He ends up in a winning position once again. He decided to place a bet again. He gives the ...
  • 1,105
5 votes
1 answer
169 views

more rileys, MORE RILEYS!

Hear ye, hear ye, my first is the, Arabic! Hear ye, hear ye, my second is money, I don’t know why! Hear ye, hear ye, oyez, oyez, my last is number one (hehehe) with a stick! Hear ye, oyez! My whole ...
3 votes
1 answer
106 views

First 9 members from a prestigious list

Upon completion, these are the first 9 members from a prestigious list to form the name of their field. Carl Bosch Hermann Emil Fischer Eduard Buchner Marie Sklodowska Curie Irving Langmuir Svante ...
7 votes
14 answers
3k views

The computer can't do anything I couldn't do with pen and paper

If you want to know how much $3^{100}$ is, you can just type it into a computer and it will spit out a really big number. But that is no fun. The task is to estimate $3^{100}$ with some computation ...
  • 629
1 vote
0 answers
144 views

An irrational puzzle

What's the answer to this puzzle?
  • 17.3k
0 votes
1 answer
162 views

General Fake Coin: k fake coins out of n coins

Considering a general fake coin problem. There are $n$ coins in total and $k$ of them are fake. Fake coins are lighter than the normal ones. You only have a balance to compare two groups of coins (no ...
20 votes
1 answer
2k views

Grandpa's peculiar TV

I found this peculiar TV in my grandfather's workshop:
  • 11.5k
2 votes
1 answer
138 views

Four superheroes involved in an operation

A superhero X from DC universe and a superhero Y from Marvel universe decided to join hands and stop a cybercriminal. They named this operation as 'Uncaged' as a codeword for 'Coding'. "I will ...
0 votes
0 answers
103 views

Guess a natural object

Thousands of lines, thousands of lines, can't be seen when dropped in the water, all things grow with me, all of them laugh in their hearts. (guess a natural object)
  • 101
8 votes
2 answers
859 views

Standing upright? It's time to slice fish!

Standing upright? It's time to slice fish! Why is the answer BRISTLING?
  • 81
5 votes
1 answer
347 views

Spell My Username in the Following Code No. 2

I have developed a code, this time purely a conversion from letters to numbers. I have put a table below with 3 words or phrases and their corresponding codes. Your job is to write my username in the ...
1 vote
0 answers
107 views

Digerati IQ test

This question contains spoilers. After making the Digerati IQ test (http://play.google.com/store/apps/details?id=cz.digerati.iqtest) there are three questions where I still don't know how they come to ...
3 votes
1 answer
175 views

Wooden disentanglement puzzle

I recently came across this disentanglement puzzle and after spending weeks trying to understand and solve this seemingly simple puzzle, I am completely stumped. I do not know what the end goal of ...
  • 33
2 votes
1 answer
105 views

Find the name and the city

Find the name and the city of my European friend using the following clues: Name Non-prime number. Trussville, Alabama. City Prime number. Clinton, Tennessee. Procedure to find the name and the ...
4 votes
1 answer
113 views

Can you Avoid the Spear-Wielding Gladiator?

You are trapped in a circular coliseum, and a gladiator with a spear is chasing you. You can't defend yourself, but you can run faster than the gladiator. You run at 11 feet per second, and the ...
5 votes
1 answer
246 views

Vowels and consecutive consonants

Replace X, Y and Z with three different words to form a meaningful sentence: In 15th century Europe, the people of the city X experienced the flow of Y whenever a Z performed. The three words should ...
13 votes
1 answer
396 views

T9 Crossword Puzzle

This puzzle is part of the Monthly Topic Challenge #4: Cross-*non*-words Anybody remember T9? Before fancy on-screen keyboards became commonplace, T9 was the state-of-the-art input method if you were ...
  • 4,552
6 votes
1 answer
138 views

Twenty-one in total

I'm looking for a single word. in the M on the TL and BR on the TL, in the M and BR on the TL, TR, BL and BR on the TL, TR, in the M, BL and BR on the TL, TR, ML, MR, BL and BR What Am I?
  • 17.3k
11 votes
1 answer
785 views

There are 10 types 0f pe0ple 1n the w0rld

Th1s puzzle 1s part 0f the Monthly Topic Challenge #4: Cross-*non*-words C0mplete the cr0ssw0rd and f1nd the h1dden themat1c e1ght-character s0lut10n w0rd. Acr0ss: 7. Pref1x mean1ng 'just a few' 0r '...
  • 106k
4 votes
6 answers
500 views

Use 12 unit length matchsticks to enclose a region whose area is 4 square units [closed]

I do not know the original source of this problem; I have seen it a few places. The solution that I have seen is not pretty in the sense that it lacks symmetry. Can you find an elegant solution? Of ...
3 votes
1 answer
131 views

Who is the king?

High king on high throne lost his favorite son, watched him fading for days 'til he was finally gone. Crestfallen and desperate, a million tears he cried as he lamented his passing, and wore black ...
  • 33
10 votes
2 answers
257 views

A game of some consequence

This puzzle is part of the Monthly Topic Challenge #3: Pencil and Paper Games Last night, I played a game of Consequences with seven friends. In our particular version of the rules*, a game consists ...
  • 106k
7 votes
1 answer
293 views

Find the Two Sentences

Introduction This puzzle has 2 Parts. The goal of each Part is to fill in the blanks for that Part's sentence. Once that is completed, you have finished the Part. Once you have completed both Parts, ...
  • 17.6k
5 votes
1 answer
328 views

Peculiar arrangement by a Geography teacher

A teacher from Africa was teaching Geography to her six students. She sensed that the students were getting restless and decided to take them to a circular playground for an outdoor activity. At the ...
2 votes
0 answers
161 views

Changing either an actor or an actress

About After the completion of this table, each row will have an actor and an actress who acted together in a movie directed by the director in that row. Rule While moving from the first row to the ...
0 votes
0 answers
75 views

Image Pattern Test [closed]

I'm looking for solution & explanantion
  • 1
-3 votes
1 answer
125 views

logical deduction - Persian Rugs - A Zebra Puzzle (Einstein's Riddle) Variation

You can play this Zebra Puzzle here: https://www.brainzilla.com/logic/zebra/persian-rugs/ Client #1 Client #2 Client #3 Client #4 Client #5 color name type symbols price place Five men, who ...
14 votes
0 answers
306 views

Strange Glyphs From Another Time

The following glyphs were recently uncovered at a dig site, which have stumped cryptographers and linguists alike. These symbols are guessed to be some sort of ancient language, but nothing is yet ...
-1 votes
2 answers
174 views

Italian Exhibition - A Zebra Puzzle (Einstein's Riddle) Variation

You can play this Zebra Puzzle here: https://www.brainzilla.com/logic/zebra/italian-exhibition/ Woman #1 Woman #2 Woman #3 Woman #4 Woman #5 shirt name surname painter time age Five women are ...
13 votes
1 answer
968 views

A robot that doesn't repeat move triplets

A robot is placed on an empty infinite grid. Each turn it can move in one of four directions: left (L), up (U), right (R) or down (D). It cannot move to a cell that it already visited. Also, it cannot ...
9 votes
2 answers
3k views

How do I solve this sudoku without guessing

I am fairly new to Sudoku and couldn't find how to progress with this one without guessing.
  • 93
10 votes
1 answer
769 views

It comprises that which composes it

Text version: ...
  • 11.5k
14 votes
2 answers
337 views

Sergeant Sequence leads the way

Sergeant Sequence entered the Chief Investigator's office to find his boss in some agitation. "Patrick Terne is on the move again, Sequence," sighed the Chief, "and once more I find ...
  • 106k
9 votes
1 answer
537 views

A Crossweb Puzzle for Herb

I brought my buddy Herb my new Crossweb puzzle to try, and he wrinkled his nose. "No way. Far too difficult. Besides, there's only one type of Crossword puzzle I like and this is NOT it." ...
  • 14.6k
2 votes
1 answer
112 views

Progressive matrix puzzle with straight and curved hatches

What's the solution to this raven's advanced progressive matrix, and why? The matrix was found on this paper: https://www.hrpub.org/download/20190830/UJER21-19513535.pdf
5 votes
2 answers
200 views

A Two Part Puzzle

Part of me is injured, but there is no drop of blood. The other part is mushy, but there is no sign of mud This is my new address, because I belong here. Place I came from, now no one lives there You ...
  • 1,537
12 votes
1 answer
246 views

What is the shortest chess game with 30 distinct captures (PxP, PxN, PxR, etc...)?

Progress So Far So far, the shortest known solution takes 87 turns (9 turns from optimal), and was found by Retudin. Progress over time: Date Moves Found by 2022-09-29 87 Retudin (initial) 97 ...
  • 226
6 votes
1 answer
612 views

Solving a 5x5 pentomino with only certain shapes

I have a physical Pentomino puzzle lying around, which contains 2 F pieces, one Y piece, one T piece and one W piece. The area into which the squares are supposed to fit in is just a little under 6 ...
5 votes
1 answer
352 views

Once you see the ---, what can you get?

I'm looking for an eleven-letter word. The triangle you see is an equilateral triangle. Note: There are four type of red lines - horizontal, vertical, left-right diagonal and right-left diagonal. ...
  • 17.3k
4 votes
1 answer
151 views

Which Goes Where? Hint: Old Kid?

Usual folks! Each ellipse corresponds to an as-yet-unknown category - two tiles are placed for you - and each remaining tile belongs to at least one category - so the question remains - which goes ...
13 votes
1 answer
676 views

Construct a meaningful phrase

If (4, 3, 15) means "I am Liam", then 14 is a feminine name. If (15, 3, 7) means "This is his", then 6 is a way of greeting someone. Construct a meaningful phrase for (8, 7, 9) ...
4 votes
1 answer
234 views

A puzzle of romance

What does the heart at the bottom depict (specifically)?
  • 17.3k
6 votes
2 answers
271 views

A group of six reactions

There exists a group of six reactions to six intended valid actions. Only one of those reactions can act as a valid action as well. When that reaction acts as an intended valid action, there is a ...
16 votes
1 answer
1k views

What famous meme am I referencing with a polynomial?

What legendary meme am I referencing (twice!) with this large and strange polynomial? $5507x^4-302885x^3+1420806x^2-2224828x+1101400=0$ Buckleyour seatbelts, it’s kind of crazy- I sincerely hope you ...

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