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Knights and Knaves : Liar , Liar - How many are you?
There are 2014 persons in a row
Each of them is either a Knave (who always lies) or a Knight (who always tells the truth).
Each person says 'There are more knaves to my left than knights to my right'.
How many knaves are there in the…
ir7
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My Prefix is Polish
My prefix is Polish
My postfix, just the opposite
My infix is easier to read
I can be anything you choose, but never, ever will I be a Tion.
What am I?
Bass
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Peaceful Encampments
This math puzzle is due to Donald Knuth (as far as I know; maybe he got it from someone else) circa 2014.
Consider a plain represented by the unit square. On this plain we want to “peacefully encamp” two armies of point-sized soldiers — one army…
Quuxplusone
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A Difficult Job
My plumber gave me a perilous job--his figurines had been stolen (3). I had to endure Ian's sobbing before he would tell me the problem under his feet (2). It turns out the girl he dated had taken his possessions, leaving only cheese in the fridge…
1848
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Infinitely many dwarves wearing hats of 2 colours
I have heard of the puzzle with 100 or 10 dwarves wearing a hat of a color, either red or blue, and standing in a straight line, and having to guess the color of their own hat - it's quite easy.
The solution to save all dwarves or all dwarves minus…
Imago
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What does this pic rebus mean?
This is a simple rebus. What is this pic rebus saying?
Amruth A
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Can you Solve for $x$?
$x=a+b+c^{1}+d^{2}+ \large e ^{\normalsize67}+ \large f \large^{\normalsize62}+ \large g^{\normalsize27}+ \large h^{\normalsize14}+\small i \normalsize^5+\small j \normalsize^1+\small k \normalsize^2+\small l \normalsize^1+\small m \normalsize^1$
Chowzen
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Was it a cat I saw?
One night whilst walking beside the road
I glimpsed something move, and so I slowed
It must be a cat, to be so spry
but it looked much redder to my eye
It disappeared behind a tree
What kind of creature did I just see?
Perhaps no animal, a…
Astralbee
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Digital Clock Brightness
My alarm clock has a typical 7-segment digital display showing hours and minutes.
Every lit segment is equally bright, and every unlit segment is equally dark. The separator (:) is always lit.
Assuming the clock uses 12-hour time without a leading…
zennehoy
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A Warped Chess Maze
A chess maze is a kind of chess puzzle where:
Only one side moves (and that side usually only has one piece).
That side must capture a piece with every move.
The goal is to capture all of the opposing pieces.
This chess maze is special,…
Excited Raichu
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Criminals and their strange slang
Quick, get in the boxpark! The guards are hot on our trail. The classfigure is getting intense. We need to get off this railblock as soon as possible. If they stop us and open the trunk we're brainbeat.
The inside mistechnology we had allowed us…
Jafe
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24
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N logicians wearing hats of N colors
N logicians are wearing hats which can be of N different colors (each hat has one color; there can be multiple hats with the same color). Each logician can see the colors of all hats except his own. The logicians must simultaneously call out a…
Gilles 'SO- stop being evil'
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Angels & Demons (Open question)
This puzzle was given to me by a friend of mine, who in turn heard it from someone else who neglected to provide the answer. The text of the puzzle as it was given to my friend is below:
Angels and Demons is a game I’ve made up. It’s played on an…
Nellington
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A Pentad of Paper Puzzles
I feel that paper is an underrepresented mechanic in puzzles, so this puzzle explores the many facets of this subject. It's (almost) all lovingly handmade, so please excuse any…
noneuclideanisms
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