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3D infected cubes puzzle with threshold $4$:
On an $n\times n\times n$ cube, some cells are infected; if a cell shares a face with $4$ infected squares, it becomes infected. What's the minimum number of initially infected...
You can consider this a "warmup" to my other question about infected squares.
On a $7\times7$ square, some cells are infected; if a cell shares an edge with $3$ infected squares, it becomes infected. Show that we can infect the whole square with only $21$ initially infected cells.
This horrible person tricked me into marrying them after a couple months. (My dumbass fault)
With the intent to steal everything from my daughter and I. She abused both of us mentally and physically.
All while having a criminal relationship with my daughter's mother and failed to tell me. Also ha...
@msh210 CHI RHO, which are the Greek letters chi and rho superimposed on each other, which represents the initial letters of the Greek Christos ("Christ"), and also a homophone of CAIRO, a heavily Muslim city?
This puzzle is part of the Puzzling Stack Exchange Advent Calendar 2022. The accepted answer to this question will be awarded a bounty worth 50 reputation.< Previous Door
'Twas the night before Christmas 1802, and Thomas Young was conducting his now famous double-slit experiment.
It was the first...
"in his series of etches, [otto dix] made a powerful anti-war plea..."
^ question for native speakers: is the above usage natural? can a plea be anti-something? all the examples i've seen are pleading for something, not against