"March comes in like a Lion" shows numerous shogi matches between master-level players. I am wondering whether the matches shown in the series are representative for master-level play or whether it's just background material made up by the screenwriters. From what I read about shogi, it sounds like a serious art in Japan, so I was wondering whether the producers put in the effort to e.g. engage some expert players as consultants or reproduce excerpts of actual historic matches.
I understand the question as Are arrangements of shogi pieces in the games drawn in the manga modelled on or reproducing game records of actual games between real professional(-level) players?.
First, the manga has a professional player as an advisor (He writes columns in interchapter pages). So the arrangements are definitely not random.
According to a blog post, some arrangements are actually based on real records, though not exactly reproducing them in most cases. So finally, the answer to your question is yes, at least partially.