This question involves not only those provided by the link, but also those "chess-themed" mathematics and computer science problems which are not included in the link. Who has published the most peer-reviewed articles on this topic amongst mathematicians and scientists?
I know, for example, Euler at least looked at the Knight's tour problem, and I believe Gauss even published a paper in the field! Granted, those problems weren't that important at the time, I'm certain, but for me, it's fun to look at. I count 11 from that list from Dr Christine Mynhardt, and she's currently Emeritus from the University of South Africa!
However, that certainly doesn't count them all, because not all "chess-themed" problems are related to the n-queen's problem. If that is what this site intended, I know not only mine aren't there, but also one of Dr Doug Chatham's. It also seems others were missing.