The first game of the <a href="https://en.wikipedia.org/wiki/World_Chess_Championship_1972" id="mwAUM" rel="mw:WikiLink" title="World Chess Championship 1972">World Chess Championship 1972</a> between challenger <a href="https://en.wikipedia.org/wiki/Bobby_Fischer" id="mwAUQ" rel="mw:WikiLink" title="Bobby Fischer">Bobby Fischer</a> and defending champion <a href="https://en.wikipedia.org/wiki/Boris_Spassky" id="mwAUU" rel="mw:WikiLink" title="Boris Spassky">Boris Spassky</a> starts.