Murray Campbell is a Canadian computer scientist and longtime IBM researcher who was a core member of the Deep Blue team. He worked on Deep Blue’s chess-playing software - its search algorithms and the evaluation function that scored positions - complementing Feng-hsiung Hsu’s custom hardware and the contributions of A. Joseph Hoane Jr.
In May 1997 Deep Blue defeated world chess champion Garry Kasparov in a six-game match in New York, winning the deciding game. Campbell, Hsu, and Hoane wrote up the full system in the paper “Deep Blue,” published in the journal Artificial Intelligence in 2002, which remains the authoritative technical account of how the machine worked.
Campbell stayed at IBM Research for decades after the match, working on artificial intelligence well beyond chess. Deep Blue’s victory is often paired with IBM’s later Watson Jeopardy win as the two public moments when the company put a game-playing machine against the best humans and won.