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Unanswered Questions

382 questions with no upvoted or accepted answers
32 votes
0 answers
3k views

Noita Eye Glyphs

A puzzle found hidden between the background layers of the computer game Noita. The puzzle has not been solved since it was added to the game in October of 2020. It is made of thousands of eye images, ...
27 votes
0 answers
2k views

Is there a move-efficient way to rotate the center pieces on the Octo-Star?

I'm looking for a more efficient algorithm to rotate the center column of the Octo-Star puzzle 45 degrees. The situation below occurs when four properly-oriented edges are next to each other, ...
25 votes
0 answers
2k views

Decrypting the Key: "Phage is Spreading.."

I've been trying to solve this puzzle called "Phage is Spreading.." ...
22 votes
0 answers
3k views

What does this mathematical operator do?

The solution to this puzzle is one I came up with when working on this puzzle: What is the answer of this math puzzle? For two natural numbers a,b, can you figure ...
22 votes
0 answers
2k views

REALLY important days in history

@Z. Dailey asks a mathematical puzzle Important days in history... and to come! with a series of dates in years 1973, 1978, 1983, 1992, 2005. My puzzle asks the question: What is the previous date in ...
19 votes
0 answers
963 views

Alternate, complex potions puzzle from HP fanfic

A long narrow room. The entrance is blocked by purple flame, the path onward blocked by black flame. On a table, the only thing in the room, are two dozen potions in opaque bottles. Half green glass, ...
18 votes
0 answers
698 views

Determining the meaning of a challenge coin

I saw this rather cool looking challenge coin the other day, and I was wondering what the associated binary on the back of it means, as it isn't standard ASCII. In plaintext: ...
17 votes
0 answers
850 views
+500

Mind your P's & Q's

Here is a numbered sequence of words/phrases. Where should SESQUIPEDALIAN (or the title) fit in this list? ZIPPER PEPPER MONEY SNIPPY PRIMED PIPPED SNAPPED POUND PUPPY PARADROPPED QUASI-POPULAR ...
14 votes
0 answers
650 views

Qubes: Oh, For the Love Of

TL;DR: This is a mixture between a tribute/spin-off puzzle and an attempt at a new puzzle type, greatly inspired by the notorious arcade game, Q*bert, published originally by Gottlieb Amusement Games. ...
14 votes
0 answers
2k views

Crack the pigeon code

Can you crack this message? It was discovered in a chimney in 2012 attached to a carrier pigeon and was most likely sent during the D-day invasions. The GCHQ was not able to crack it, even after ...
14 votes
0 answers
809 views

Grandma's keynote

Found this note which is addressed To my grandma, in her chest Since she's passed now, here's my quest.. What tickled her interest? And who invited her as guest?
14 votes
0 answers
1k views

How would this binary-ish code be translated?

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12 votes
0 answers
344 views

Can we find four identically colored numbers?

Take the positive integers {1, 2, 3, ...} and color them red, green or blue. Is it true that no matter what coloring is chosen, we can always find three distinct numbers x, y and z so that x, y, z ...
12 votes
0 answers
241 views

The Snake and the Hunter

The Snake and the Hunter is a game for two players who play in two rounds interchanging the roles of snake and hunter. The game is played in a rectangular grid of points, say 6×6. In both rounds the ...
12 votes
0 answers
881 views

Dissecting a figure into 2, 3, 4, and 5 parts but not 6

This figure is divided in 2, 3 and 4 equal parts of same size and shape, but it is not possible to do it in 5 equal parts of same size and shape. Is it possible to find a figure that can be divided ...

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