This post is a bit late. I never really got around to posting these puzzles. There's some nice puzzle in the set, so I figured I'd still share all of them.
I focussed my writing mostly on Rounds 7 and 20. They contained the most types I hadn't seen before. I also played around a bit with round 13. I think I got the most out of writing puzzles for round 7 as I could actually keep up pretty well with Ken Endo, finishing in second place only slightly behind.
Puzzles can be found below.