I appreciate your thoughtful reply, Dan. “[I]t’s possible that somewhere on the Internet there exist sad losers who would waste their time doing jigsaws slightly-faster than by hand in order to put their name on a scoreboard.” That made me laugh, because, yes, more of those exist than you would think! And there are some who have found ways to do this without knowing how to write code, for instance by painstakingly stacking pieces by shape and then trying to fit one piece from stack A into any piece in stack B, over and over again. Talk about boring!

I wish all hackers were ethical, but there’s that pesky problem of human nature . . .

Best to you,
“Perdita”