Last year I wrote here on the blog about my return to regular puzzle book solving, a habit that’s been part of my life since I was in middle school, as the end result of determining what to do on my commute. One of the things I mentioned in passing is that I was slowly working my way through the challenging Nikoli series of logic puzzle books. This week, a bit of a milestone: I completed the last of the 14 books that they have released. Continue reading →