After a difficult start to the contest in Philadelphia, Kasparov seemed suddenly to crack the problem of finding a style of chess guaranteed to bamboozle this awesome machine. In the first game of the match, Deep Blue had shown that it was capable of out- calculating the strongest human player.
Perhaps it just took him by surprise. But then Kasparov displayed a tactical flair far beyond anything mere microchips can muster, eventually levelling the match to two-all and then taking the fifth, after Deep Blue's determined programmers rejected a draw.
The final game was an even more striking display of human intelligence. An ill-advised excursion by Deep Blue in the opening resulted in a loss of precious time.
Unable to break out of a passive position, it simply moved its pieces sideways and backwards while Kasparov's forces edged inexorably forwards. And forwards.
After the stunning opening win - the first time a computer had beaten a world champion in serious play - Deep Blue's programmers must now go back to the drawing board.
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