The ninth 6. Bc4 against the Najdorf of the match.
Before looking at some games I'd like to recommend Domenic Lawson's The Inner Game, written from inside the Short camp at the '93 match. It captures the tension, the stress of competing against Kasparov, the candid and sometimes brutal Nigel Short and is very well written.
So here we go. Bc4 against the Najdorf, it can be explosive, positional (read: boring), tactical... or all of the above. Round 6: Short - Kasparov 1993
Courageous stuff from Short and he had chances to win the game. What a game!