ttsiod writes: "When I was a kid, I used to play the Knight's Tour puzzle with pen and paper: you simply had to pass once from every square of a chess board, moving like a Knight. Nowadays, I no longer play chess; but somehow I remembered this nice little puzzle and coded a 60-line Python solver that can tackle even 100x100 boards in less than a second.
Try beating this, fellow coders!"
The F-15 Eagle:
If it's up, we'll shoot it down. If it's down, we'll blow it up.
-- A McDonnel-Douglas ad from a few years ago