<a href="https://en.wikipedia.org/wiki/Bobby_Fischer" id="mw4A" rel="mw:WikiLink" title="Bobby Fischer">Bobby Fischer</a> <a href="https://en.wikipedia.org/wiki/World_Chess_Championship_1975" id="mw4Q" rel="mw:WikiLink" title="World Chess Championship 1975">refuses to play</a> in a <a href="https://en.wikipedia.org/wiki/Chess" id="mw4g" rel="mw:WikiLink" title="Chess">chess</a> match against <a href="https://en.wikipedia.org/wiki/Anatoly_Karpov" id="mw4w" rel="mw:WikiLink" title="Anatoly Karpov">Anatoly Karpov</a>, giving Karpov the title of World Champion by default.