My delight in playing turned to a lust for playing, my lust for playing into a compulsion to play, a mania, a frenetic fury that filled not only my waking hours but also came to invade my sleep. I could think of nothing but chess, I thought only in chess moves and chess problems... As a chess obsessive, what if you have a once-in-a-lifetime opportunity to play the world champion, but it might send you to the edge of madness... and tip you over?