I was wondering if there is any correlation between the way alcohol burns and a common view of a spirit?
Alcohol burns with a wavering blue flame that looks almost ethereal.
Spirits are often pictured as blue and wavering (think of the will-o'-the-wisps in brave).
Coincidence? To be clear:...
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You head through the door. Immediately, you are blinded by a sudden burst of light. You stand in the doorway, blinking, as the door closes and pushes you into the room. As your eyes adjust, you see that there are four bright lights in front of you, shaped like...
Q42's game 0hh1 and Simon Tatham's game Unruly are two almost identical logical deduction games. In each one, we're given a square grid which is to be filled by tiles of two colours, and a certain initial setup of given tiles. We need to fill in the rest of the tiles, subject to the following res...
Just keep sweeping the remaining line into the dustpan. It'll shrink more and more each time you sweep it, until in the end there's nothing left of it.
It also helps to change the angle of sweeping each time; that way, what was a long line becomes a shorter line relative to the new angle of dire...
As most of you know, there is no Sudoku problem that has less than 17 number of starting clues with one unique solution.
Imagine there is a sudoku problem that has $n$ number of starting clues with one unique solution, where removing any clue in the sudoku will make the puzzle non-unique (more t...
