In you position, I would try the Kaufmann defense. Calculate the
number of available moves you have and then assign each potential
move a number. Through a combination of coin flips and dice tosses
(you'll have to figure out these details for yourself) you then randomly
select one move. Ideally, the selected move will seem to your
opponent to have 'come from nowhere" and will throw him into an
introspective crisis. He will ask himself, e.g., "Why did masterwolf60
just sacrifice his rook? He must see some potential advantage, but I
don't see it. He must be thinking at least six or eight moves in
advance of me. How, then, can I determine the benefits or costs of
any of MY moves." At this point your opponent will self-destruct or
become paralyzed, either way the win is yours.