Crossword Genius

It has thousands of openings (5)

Ross

I believe the answer is:

chess

(Other definitions for chess that I've seen before include "Board game of 13, 16 and 21" , "Game with kings and queens" , "form of battle" , "In which two bishops will participate" , "that has over thirty men on board" .)

I've seen this clue in The New York Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.