Deep Blue
... that Garry Kasparov thought that a move by chess computer Deep Blue demonstrated its "superior intelligence", but the move was in fact caused by a software bug?
... that <a href="./Garry_Kasparov" id="mw1Q" rel="mw:WikiLink" title="Garry Kasparov">Garry Kasparov</a> thought that a move by <a href="./Computer_chess" id="mw1g" rel="mw:WikiLink" title="Computer chess">chess computer</a> <b id="mw1w"><a href="./Deep_Blue_(chess_computer)" id="mw2A" rel="mw:WikiLink" title="Deep Blue (chess computer)">Deep Blue</a></b> demonstrated its "superior intelligence", but the move was in fact caused by a <a href="./Software_bug" id="mw2Q" rel="mw:WikiLink" title="Software bug">software bug</a>?