Chess board and pieces used in the 1996 Kasparov vs. Deep Blue match,
Shown here is a game board from the 1996 match between Deep Blue and Garry Kasparov in Philadelphia. When playing Deep Blue, Kasparov frequently played a defensive style of chess that seemed to include an "anti-computer" strategy. As Grandmaster Vishwanathan Anand observed of Kasparov’s play in the 1997 rematch: "By trying so hard to avoid any position where Deep Blue might be able to calculate its way through, he effectively self-destructed."