The members of the R Ladies DC user group put together an R-themed crossword for a recent networking event. It's a fun way to test out your R knowledge. (Click to enlarge, or download a printable version here.)
If you get stuck, you can find the answers here or at the link below. And if you'd like to join your local R-Ladies chapter, you can find a list of meetups here.
Github (rladies): meetup-presentations_dc / NetworkingCrosswordPuzzle-2017