Are there ken ken tournaments?

Only if you have the copyrights to the kenken, or you copy-paste a link to the ken ken found online to the question. You can copy-paste an image of the ken ken on the discussion of your question, but...

Brad Rutter decisively won the three-game final, claiming the tournament title and the $2,000,000 See related link

Kenneth Starr (born 1946), the American jurist

kenneth gwyn Rees is my husband his father was kenneth george Rees hie grandfather was Benjamin Rees

It's only hard unless you haven't learned strategies to solve them, and haven't practiced them. Unfortunately, there aren't many ways to learn it beyond the simplest level, so I've put some free...