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1500 questions
31
votes
5 answers
Can you see out of the forest?
You are standing at the centre of a circular forest of radius 500 metres. The trees of this very regularly planted forest stand in a precise rectangular lattice on the plane, each 10 metres from the next: the points $(m,n)$ within the disc-shaped…
Rand al'Thor
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1 answer
What is a Bumpy 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 has a certain property, I call it a Bumpy Word™.
You can use the examples below to find the…
GentlePurpleRain
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31
votes
1 answer
What Road and What Story?
Professor O'Brien is missing from his laboratory. So is the elaborate contraption he has been working
on for months. Paranoid about security, Professor O'Brien has not confided the nature of his experiments
to anyone. It is known that he has been…
Hugh Meyers
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31
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1 answer
The Writings of Impostradamus
The controversial 18th century figure, Impostradamus, is perhaps best known for his extensive research in the fields of astrology, palm reading, magic potions and management accountancy. However, less well known is the fact that, in his later life,…
hexomino
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31
votes
1 answer
Did you ask her yet?
Last time I talked to my buddy, Garrick B. Raad, He kept going on about this girl he liked. As we parted ways he mentioned that he was going to ask her out.
A few days went by before I texted him, asking whether he had asked her out yet.
He…
Areeb
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31
votes
6 answers
Who's been stealing Jenny's milk?
Jenny works in an office with four other colleagues and someone has been using her milk. She finds this very annoying as she likes her mid-afternoon tea and she simply can't enjoy the second half of her day if she has to drink black tea…
Liath
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31
votes
1 answer
Conway's Game of Knights
You have 1 chess piece: The Knight
The board: Conway's Game of Life
Your goal: Survive
Basically, you control a standard chess Knight. You are only allowed to move to cells considered "live" (depicted as grey in the images). After you move, the…
David Starkey
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31
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3 answers
I have hands all over me. What am I?
I have hands all over me
First I used balls, now I can see
Tied or not, I have no free will
Moving, moving, that's the key.
What am I?
Hope you enjoy this riddle.
lois6b
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31
votes
1 answer
For a puzzler such as you, you shall solve with ease
Your pet cricket has disappeared, due to its undying loyalty and steadfastness you assume foul play must be afoot! After looking around for any signs of confrontation, you find none, but thankfully your years of training it in typing appear to have…
Going hamateur
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31
votes
3 answers
Knights on a Torus
An 8×8 chessboard is in the shape of a torus. (This means that the board "wraps around" - you can go left from a2 and come out on h2, for instance. It also works vertically - you can go up from f8 and come out on f1.) What is the minimum number of…
geeky me
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31
votes
9 answers
Splitting a Plate into 4 Equal Pieces
You are stuck on an island and have been tasked by the natives with dividing a plate of chocolate into 4 equal pieces, one for each of the island's gods. Each god must have an equal share, or you go into the volcano.
The plate is a perfect square.…
JonTheMon
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31
votes
2 answers
Can you explain the Summation?
This is my first riddle, so I hope it is not to easy.
Can you explain what I am calculating here?
Without N I am following the same creature like Alice
+
Add my short name to my long name and I become a King
+
With ITE I am the weakness of the…
kl78
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31
votes
9 answers
How many consecutive positive integers can you make using exactly four instances of the digit '4'?
Starting at 1 (which is 4 - $\sqrt4$ - 4/4), how many consecutive integers can you make using exactly four instances of the digit '4'?
Basic rules:
Any operator symbol is "free".
Any printed '4' counts toward your four '4's.
Other digits are NOT…
JamesFaix
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31
votes
5 answers
Switch The Knights
On a small $ 4 \times 3$ chessboard, the top row is filled with black knights and the bottom row with white knights. On each move, you may move one knight (as it moves in chess) to an unoccupied square.
How many moves does it take to switch the…
Mike Earnest
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31
votes
3 answers
A lonely pawn on the chessboard
Alice and Bob and the referee Conny play the following game with a pawn on a standard $8\times8$ chessboard:
In the beginning, Conny places the pawn into the center of a randomly chosen square. All $64$ squares are chosen with equal probabilities.…
Gamow
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