Promotion: Knight's Challenge
You have 46- hours to play with it if you align with official deadline. It probably spends you 2~5 hours in this weekend. Beware! Doing the bonus part may spend you a block of extra 2 hours or more.
I wish more people will participate and show different approaches to the task. (And, may the participant give me some feedback as a puzzle creator?)
One may have advantage if s/he has played chess.
As the puzzle creator, of course I had a sketch of a solution in my mind.
My blog is moved to GitHub, mainly because I think soon or later I will blog on other programming languages or issues. At this moment, it has a few posts. :o)