Questions tagged [open-ended]

NOTE: This tag is currently being debated on Meta. Questions asked under this tag may not fall under the scope of the site. Please be mindful of that when asking a question. Used when the tagged puzzle is open ended to all solvers and could be "bested" at any point, if a given solver has a better solution that fulfills the askers requirements.

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3
votes
3answers
641 views

Make a sentence with the most different uses of the same word [closed]

Background I recently stumbled across the following grammatically correct sentence: Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo. This sentence relies on the fact that the ...
2
votes
2answers
269 views

Longest autological loop?

A word is said to be autological if it describes itself. This can be a property of both nouns and adjectives; for example, "noun" is a noun and "pentasyllabic" is pentasyllabic. We can also construct ...
3
votes
3answers
353 views

Make me a room-filling pattern!

So I need a new knitting pattern, but I figured this might be a nice puzzle. I'm looking for a pixelated 2D-shape that can be used in a room-filling pattern (rotation and flipping allowed). The ...
5
votes
2answers
480 views

Improve my 3D puzzle

3D View of one solutions http://autode.sk/2Dg4FWx I designed a 4x4x4 soma cube in AutoCad and then built it with wood cubes. There are twelve pentacubes and one tetracubes. Each piece is unique and ...
6
votes
3answers
524 views

Place three Knights, three Bishops and three Rooks on this board snippet

Place three Knights, three Bishops and three Rooks on this board snippet. The only rule: each piece has to be attacked exactly once. Notes: Ignore color, so every piece attacks every other piece ...
-2
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4answers
426 views

What's my number? [duplicate]

I am thinking of an integer $1,2$ or $3$. You can ask me only a single question to which I can reply "Yes", "No" or "I don't know". I will be completely honest. What will you ask me to figure out what ...
-10
votes
6answers
1k views

Find English words with Sound of V or W?

Search and find some English words which when written starts with o and when speaking they pronounce with sound of v or w lets see who ll find maximum words?
4
votes
7answers
4k views

Find the longest string of words such that the (4 letter) end of one word is the start of the next

Here is an open-ended challenge. Find the longest series of English words such that the final four letters of word $n$ are the same as the first four letters of word $n+1$. Example (3 words) ...
6
votes
1answer
431 views

Picture a graph without words

You may have played/sung/heard a song without words in concert, in choir, and in a Sushi restaurant. Who hasn’t?! Well here is a picture without words, only axes: And here it is without JPG-...
5
votes
6answers
1k views

Challenge: Longest x-height word/sentence

A common puzzle is to see how to make sentences from the same letters, or the longest word in alphabetical order, etc. see here for a list. Now 'the x-height or corpus size refers to the distance ...
26
votes
18answers
16k views

Don't settle for a billion [duplicate]

While Artur is willing to settle for a billion, I'd like a much bigger return on my two matchstick investment. Moving only two matchsticks, what is the largest number that can be created from the ...
5
votes
3answers
688 views

English word with most valid substrings

What English word has the most valid word substrings, no repeats? Examples (I may have missed some words): AIRSPACES: a, i, air, spa, space, spaces, pace, paces, ace, aces DEMONETIZED: demo, demon, ...
10
votes
11answers
12k views

Infinitely long loaf of Bread [closed]

You are visiting your old friend Mike at Infinitely's Baking Shop. Just as you arrived, he was taking out a fresh, infinitely long loaf of bread. Both of its ends extend infinitely long in a ...
6
votes
4answers
442 views

Constructing 0.35 Unit Length

The Problem The medieval equivalent of Bob the Builder has a new job offer: He is to build a box with the measures of $0.35$ units by $0.35$ units by $0.35$ units for a king. There is a little ...
4
votes
3answers
425 views

Find the most MissSpellable word, but in a good way?

Most MissSpellable Word - English? I'm not a native English speaker but I tend to keep an eye on my spelling and grammar. I recently misspelled "throw" as "throe", which, to my surprise, was a real ...
5
votes
4answers
769 views

Challenge : Create a star shaped crosswords (Smaller numbers of distinct letters wins !)

Rules: Create a star-shaped crossword using 6 letters English words. Clues for the crossword is not needed. Use common English words. Direction for diagonals is TOP to DOWN. Direction for Horizontal ...
22
votes
13answers
7k views

Playing “Guess a Number” with myself

I want to play a game where one person thinks of a number and the other tries to guess it, but I want to play this game by myself. The puzzle is to come up with a way to play this game. Rules (have ...
4
votes
1answer
479 views

Infinitely simple polygon solipsism

           Solipsism — The self is all that can be known to exist. Above is a simple polygonal region divided into infinitely many different-...
14
votes
3answers
394 views

Pool of Pawns (Chess Sliding Puzzle)

The King has tired of watching the Queen swim in the Pool of Pawns. Help him return to his palace on h8 using as few moves as possible. Only legal chess moves are allowed. Pawns are not promoted on ...
34
votes
21answers
12k views

3:3! It's a football score! [closed]

Given to me, by a friend: How would you make 20, using two threes? You may use any basic operation. And others, such as square roots (the symbol), factorials, etc. Any operation is allowed. Just ...
-6
votes
1answer
258 views

Any twelve year-old can answer this question

Come up with a question between five and ten words long with an answer that contains more than three times as many unique words as the question, does not contain any of the question words, and does ...
9
votes
3answers
380 views

Unreflected infinitely simple polygon reflexivity

(This was retrofitted to more tightly match a surprise solution and to allow for another puzzle with the original intent.)                   &...
17
votes
5answers
1k views

‘‘Loopy’’ C loop

What is the smallest number of non-space characters that can be added in order to change the following code into a complete C program that prints  ...
7
votes
2answers
563 views

MathJax: ones and zeros

Do or do not, there is no try.     — Yoda Here is another MathJax puzzle. The Starring MathJax puzzle involved handling numbers in MathJax, even though there are no count registers or ...
10
votes
4answers
751 views

Prime Circuit Optimisation

It's logic gates time! You are only allowed to use NOT, OR, AND, XOR gates, accepting 1,2,2,2 inputs respectively. PART ONE You must build a circuit with $n$ inputs, and 1 output. The output must be ...
6
votes
1answer
258 views

She Lia Squared: Our daughter asked, “How many words can it make?”

For puzzle experts out there I'm certain this will seem trivial. Our daughter recently conned my wife and I into purchasing interlocking foam squares for her bedroom floor. On each square is a ...
7
votes
1answer
435 views

Character Navigation

Consider the following grid of streets with roadblocks: If you are facing in the direction of the arrow and want to get to the dot, the highlighted path is the shortest: This traces out an L. Let'...
12
votes
2answers
542 views

KenKen Zen: A journey begins

Let us shy away from the materialistic opulence of 361- cell KenKen layouts (−9 to +9, squared).  Let us contemplate a modest KenKen journey, unburdened by gratuitously ...
4
votes
1answer
240 views

The Autonumerigram Challenge [duplicate]

Some phrases both refer to a number, n, and are comprised of n alphabetic characters. I call any such phrase an autonumerigram. For example, four has 4 letters seven plus seven has 14 letters ...
5
votes
7answers
1k views

What is the smallest positive number on an 8-segment array? (no repeats) [closed]

You are provided with the 8-segment array in the picture together with all the necessary electronics to make any combination of lit segments you want. Fillable version for graphics. http://i.stack....
0
votes
5answers
262 views

What is the largest possible positive number on an 8-segment array? (repeated symbols allowed) [closed]

This is a follow-up to the question, What is the smallest possible positive number on an 8-segment array? However, this time repeats are allowed! You are provided with the 8-segment array in the ...
7
votes
3answers
621 views

Building the ideal Scrabble dice set

This is a genuine question and I don't know the "correct" answer to this. I'm also of two minds if it is really on-topic on the site. Finding the answer is surely "a puzzle" (if ...
6
votes
1answer
301 views

A Stranger (Chess Sliding Puzzle)

A suspicious stranger lurks in the village. Deal with him before escorting the King to the luxurious safety of h8. White is first to move. Only legal chess moves are allowed. Pawns are not promoted ...
30
votes
3answers
973 views

Rook River (Chess Sliding Puzzle)

The absent-minded king has gotten himself lost. Help him return to his palace on h8 using as few moves as possible. Only legal chess moves are allowed. Pawns are not promoted on the final rank. You ...
5
votes
1answer
276 views

Can You Find a Tower of Hanoi Word?

Consider a simple Tower of Hanoi set consisting of three rods and three disks. This tower has an optimal solution of seven moves; these seven moves are the only ones allowed in what follows. For the ...
24
votes
9answers
3k views

Longest “De Bruijn phrase” in English

Let's call De Bruijn n-phrase a sequence $S$ of n words $W_1 W_2 W_3... W_n$ such that any "left-rotation" of its words constitutes a correct and meaningful phrase. The left-rotations of $S$ are: $...
8
votes
12answers
3k views

One syllable words with many vowel sounds

I'm not entirely sure how to word this, but what is the largest set of one syllable words you can find in which every phonetic sound is the same except the vowel? For example, 'arc', 'orc', and 'irk' ...
7
votes
10answers
3k views

Word with the largest number of different phonetic vowel sounds

Which English word has the largest number of different unique phonetic vowel sounds in it? I will only count one vowel sound per syllable. To make it more like a competition, if two people get the ...
7
votes
3answers
704 views

What is the Sparsest Word?

Side note: If you know a better way to describe an anagram that doesn't use all the letters except for "words within the word" or some other lengthy phrase, please let me know. I considered asking ...
4
votes
1answer
511 views

Connecting 3 circular power timers to lights so that they turn for one day on Christmas

My friend gave a question to me. I am not sure if it is an original puzzle, but he has 2 lines of Christmas lights and 3 circular timers with 96 switches apiece. Each switch turns on power for 15 ...
-1
votes
2answers
329 views

Can a single sentence be made using words to, too, and two consecutively (one after the other) in the same sentence properly? [closed]

Without any restriction, can a single sentence be written or spoken using the words "to", "too", and "two" in the same sentence consecutively used (one after the other) and be proper? Please ...
7
votes
3answers
820 views

Starring MathJax

Twinkle, Twinkle, little star... Having enjoyed @Humn's recent MathJax puzzles (MathJax exposed and MathJax re-flex), I decided to contribute some of my own. This one is a classic $\rm\TeX$ exercise,...
7
votes
1answer
550 views

Lights in the Dungeon: Five by Five

This is the third in a series Lights in the Dungeon puzzles. previous (2nd) <-- | --> next (4th) You are practically skipping as you leave the four by four dungeon. This has been pretty easy so ...
10
votes
1answer
697 views

Dragons: Myth or MathJax?

Ever use MathJax to display mathematical expressions?   Expressions related to fractals? Ever used it to display fractals themselves?!   The time has come. These fractals are based on the ...
6
votes
2answers
513 views

MathJax re flex

MathJax mirror on the wall, what is the fairest code of all? Let’s find the minimal replacement for (replace this line) in the following MathJax code ...
5
votes
1answer
454 views

Optimize cloth usage

A factory that manufactures clothing cuts multiple garments at once. Sometimes a number of markers are used for a job. Each marker may have a single size or multiple sizes depending on what is needed....
4
votes
3answers
329 views

Number wheel Challenge!

Much like the Word-tank-wheel challenge, but numbers! Find a number that can 'rotate' in a way that the origin number and its rotations must be divisible (i.e. whole number) by the number of times it ...
21
votes
9answers
2k views

Word Tank-chain-wheel Challenge

My niece gave me this word wheels challenges the other day and I comes up with an alternative. Here's how this challenge works: Find a word that can form another word by moving its first letter ...
14
votes
9answers
905 views

Interaction of the three kinds

There're three kinds of it. Any two of the same kind will give you that same kind. Any two of the different kinds will give you the remaining kind. What is it? I don't know the answer. I'm trying ...
6
votes
1answer
286 views

A Blokus Flow problem

When I'm fed up with the usual rules of the boardgame Blokus, I'm making variations of it. Here is one I recently come up with. Provided on a blokus board, each player has at his disposal every ...