Questions tagged [open-ended]

OPEN-ENDED PUZZLES ARE NO LONGER IN SCOPE. Used when no answer can be guaranteed to be the last, best one. If a puzzle instead has a provably optimal solution, tag with [optimization].

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18
votes
26answers
12k views

Building a 2 mile runway on a 1x1 mile island [closed]

You have a 1-mile long x 1-mile wide island. When taking off from a flat runway, a plane requires a runway of minimum length 2 ...
16
votes
18answers
28k views

Find words with the highest proportion of a single letter [closed]

Thanks to JoeZ, pacoverflow, isaacg, Sp3000, Novarg, Ram, h34, and all those who contributed answers that have since been beaten. I've accepted JoeZ's answer since he has the most mentions on the list ...
11
votes
1answer
555 views

Bouncing Robots: Graphical Puzzle [closed]

Robots are indicated by the arrowhead shapes and the labels "r", "y", "b", "g". The label obviously corresponds to their color. The aim of the puzzle is to pick up the shapes and put them down in the ...
28
votes
7answers
14k views

The most words that can be made by successively adding one letter to the original word?

What is the largest number of words that can be made by just adding one letter to the original word, where each iteration is a meaningful word? E.g. ...
-4
votes
3answers
2k views

I before E, except in the following sentences: [closed]

"I before E" is a common mnemonic that is taught for spelling certain English words, but this mnemonic is often wrong, as pointed out in this Language Log post. The aim of this question is ...
-2
votes
4answers
430 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 ...
-1
votes
2answers
2k views

Longest alphabetical sentence [closed]

What is the longest alphabetized (by first letter) sentence you can construct? For example, consider these "words": be, a, fish, elephant, crashed, dead If this were a sentence, it would be valid:...
5
votes
2answers
2k views

English words with the most consonants, all voiced or all unvoiced [closed]

What English words containing only voiced or only unvoiced consonants contain the most? Count each consonant as many times as it appears. Note that this is a question about the sounds (phonemes) ...
2
votes
1answer
309 views

Memory Enhancement Through Numeric Imagery - What is the longest or best coherent sentence/paragraph/story you can make? [closed]

The guy who recited 20k numbers of pi by memory alone used a system where he converted numbers into consonants and then grouped words or sentences together to remember a huge amount of numbers. Here'...
11
votes
11answers
5k views

Longest sentence with each letter repeated n times [closed]

Inspiration: This question was inspired by Word sets with no repeating letters Rules: Sentences can be of any length. Every letter used in this sentence, must be used n times. n can be any number. ...
4
votes
5answers
3k views

Pairs of anagrams where the two words sound and look very different

This is a question about pairs of anagrams capable of flavoring puzzles as memorable and surprising because the two words are so different. One of my favorite such pairs is chesty and scythe. These ...
1
vote
3answers
368 views

Object Representation [closed]

Background It isn't a common art style, but it is still done: using letters for form in pictures. Sometimes, people create art using only letters. Now, let us choose a word, i.e. Cool. 'Cool' can be ...
61
votes
19answers
10k views

Growing anagrams - What is the longest possible list forming a sentence?

This is a challenge for word-puzzle lovers. It might be a bit more of a game than a puzzle, but I think it is not limitless in it's answers, so a final answer could be found (eventually). What is the ...
3
votes
5answers
6k views

Longest Calculator Word? [closed]

Current Best; Babingtonites = 5371207621898; 13 letters We all know from fooling around with a calculator at some point in our lives, the when we turn a calculator upside down we can make words. For ...
-7
votes
3answers
564 views

Shortest sentence with 2 sets of synonyms? [closed]

Current Best: 13 characters This time I'm asking you guys to determine the shortest possible grammatically correct english sentence that includes 2 pairs of synonyms (different words that mean the ...
1
vote
4answers
685 views

Find the longest arithmetic expression with value equal to number of letters in its english representation

The expression twenty minus five has 15 letters (we ignore spaces) and also has the arithmetic value of 15. You can use standard math constants, operators and ...
13
votes
14answers
4k views

Shortest sentence with two auto-antonyms [closed]

You have to use two words that are each their own opposite (auto-antonyms, contronyms, contranyms or whatever you want to call it) in the same sentence. This means that each of the two words in used ...
-4
votes
2answers
4k views

Maze Generation Algorithm [closed]

You must design an algorithm for a 16x17 rectangle grid. Each "cell" is either a wall or an opening. This algorithm must achieve a maze without long hallways in 1 general direction, and must have dead ...
23
votes
2answers
3k views

Open-ended challenge: Find the longest morsagram word pair [closed]

The idea for this challenge stems from this posting on ComputerScience (beta). It is established (see above link), that Morse-code requires the 'space' between individual character to be uniquely ...
13
votes
6answers
3k views

Can you solve those laser puzzles? (puzzles created by the community) [closed]

So, I was bored and I made a small game for this site! In this game the user who solves the previous puzzle gets to create the next one and they will always be more complex. Website link and string ...
7
votes
4answers
632 views

The Longest Word Made from Specific Chemical Symbols [closed]

So, my first question on this topic was answered fairly quickly with quite a long word, so I thought I might post a different version of the puzzle The idea this time is similar to last time: you ...
44
votes
9answers
23k views

The Longest Word Made from Chemical Symbols [closed]

So, as you probably know, each and every element in the Periodic Table has its own unique chemical symbol, which is either one, two, or three letters long. For instance, Oxygen is represented as O and ...

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