It's been 15 years since IBM's Deep Blue recorded its famous May 11th 1997 victory over world champion chess player Garry Kasparov -- a landmark in artificial intelligence. Designed by Big Blue as a way of understanding high-power parallel processing, the "brute force" system could examine 200 million chess positions every second, beating the grandmaster 3.5-2.5 after losing 4-2 the previous year. It went on to help develop drug treatments, analyze risk and aid data miners before being replaced with Blue Gene and, more recently, Watson -- which recorded a famous series of victories on Jeopardy! in 2011. If you'd like to know more, we've got a video with one of the computer's fathers: Dr. Murray Campbell and a comparison on how the three supercomputers stack up after the break.

As for Garry Kasparov? The loss didn't ruin his career, he went on to win every single Chess trophy conceived, retired, wrote some books and went into politics. As you do.