Answer: deepblue

AnswerCrossword Clue
DEEPBLUE

IBM's chess machine, by way of MIT

DEEPBLUE

Chess-playing computer

DEEPBLUE

Cobalt

DEEPBLUE
Groundbreaking chess-playing computer
DEEPBLUE
IBM's old chess-playing computer
DEEPBLUEComputer that bested Garry Kasparov in 1997