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'''Kasparov versus X3D Fritz 2003''',<br/>

The four games match, telecasted by [https://en.wikipedia.org/wiki/ESPN ESPN], ended in a 2-2 tie. Garry Kasparov won game 3, Fritz won game 2 due to a one move blunder 32... Rg7 by Kasparov <ref>Quote from [[David Levy]] ('''2003'''). ''Kasparov vs X3D Fritz''. [[ICGA Journal#26_4|ICGA Journal, Vol. 26, No. 4]], The 3D environment: "With the [https://en.wikipedia.org/wiki/Virtual_reality virtual reality] environment Kasparov was calling out his moves and did not have the luxury of changing his mind when he saw the piece in the air (or on a new square). After the match his second, Yuri Dokhian, asked him simply to remove the rook from the board in game two (instead of playing it to g7), and immediately Kasparov realised that ...Rg7 would be fatal."</ref>, and two remaining games 1 and 4 were draws. X3D Fritz ran on four [[Intel]] [https://en.wikipedia.org/wiki/Pentium_4 Pentium 4] [https://en.wikipedia.org/wiki/Xeon Xeon] CPUs at 2.8 GHz <ref>[https://en.wikipedia.org/wiki/X3D_Fritz X3D Fritz from Wikipedia]</ref> . Kasparov, wearing special X3D [https://en.wikipedia.org/wiki/3D_glasses glasses] <ref>[http://www.mtbs3d.com/phpBB/viewtopic.php?f=104&t=10352 Meant to be Seen - View topic - IZ3D + X3D glasses, a couple of problems], May 21, 2010</ref> , saw a X3D three-dimensional projection of the [[3D Graphics Board|board]] floating in the air in front of him. He spoke his moves out loud, thus conveying them to the computer which had a [https://en.wikipedia.org/wiki/Speech_recognition speech recognition] system.