According to this post in the Chronicle of Higher Education, every night at 10 p.m. there is a Binghamton University professor who “waits for the online release of the next day’s New York Times crossword puzzle, downloads it, and typically solves it in three to 10 minutes. (On Saturday and Sunday nights, the puzzle is released at 6 p.m.)
These are “speeds dizzying even to seasoned solvers. Then he publishes the filled-in grid online and writes a blog post. He details words he liked, clues he hated, and judges the snappiness of the theme. He’s unflinchingly honest.
And, … he’s kept this up every day for 12 years!”