Unanswered Questions

Here on puzzling SE there is the category "calculation puzzle", but it's very broad. I'd like to know if somebody gave a specific name for such puzzles.

The image below contains 8 triangles each having side length 6. Inside each triangles are three numbers indicating lengths of 3 lines that are wrapped around the triangle without gaps. Numbers range ...

Inspired by this recent question here is a variation. Three identical aeroplanes are based on an island with one airport. Each plane can take fuel to get less than halfway around the world. Fuel can ...

I came across an interesting toggling puzzle while looking through a code repository on GitHub. I want to find out more about it and see if there is any info on how to solve it, how to ensure ...

Does anyone happen to know a name for this traditional(?) number square puzzle/game? The puzzle has a board of 10x10 squares that are initially empty. The player starts the game by entering the number ...

Person A formed 10 small balls of paper (plain white paper, all 10 looked the same). Then person A picked up all 10 paper balls and threw them on a table at the same time. Then you should be able to ...

Here's a sequence of numbers: 133, 173, 30, 133, 176, 160, 171, 63, 137, 176, 160, 60, 177 I'm sure they are an important part of a puzzle I'm trying to solve which I found hidden in an image - ...

A computer uses an unknown formula to create a 4 digit Output using specific Input. Here are 3 examples: Input = 20066 : 020470 : 47 : 1 : 322267 Output = 0927 Input = 20066 : 020470 : 46 : 3 : 198684 ...

There is a puzzle on this site Socket_Supply_Co a00fba3af1ffc09, Rabbit hole's enigma calls, Puzzle unfolds deep. I tried to decode the first line which is ...