The Final Blow

Just as Dag said, this is a very good training. And indeed it is. Master it and go with confidence to the exams. Good luck to us all! Feel free to get tips from my solutions. I decided to work on it quickly as a way of revising for the exams. By so doing, I can figure out where to focus on. So please do the same if you find that relevant! -kisimi

SemOpp3.zip — ZIP archive, 4Kb