The text boxes below have been placed in a random order. Reorder the paragraphs.
A. Researchers in the field of artificial intelligence have long been intrigued by games, and not just as a way of avoiding work.
B. Ever since the stunning victory of Deep Blue, a program running on an IBM supercomputer, over Gary Kasparov, then world chess champion, in 1997, it has been clear that computers would dominate that particular game.
C. Games provide an ideal setting to explore important elements of the design of cleverer machines, such as pattern recognition, learning and planning.
D. Today, though, they are pressing the attack on every front.