Robert James Fischer vs Boris Spassky #7 Ruy Lopez Spanish, $5 million match 1992
Here is what I believe to be one of the greatest endings ever in chess. I'll set the stage, Fischer is going into the endgame as white with two knights and six pawns against Spassky's two Bishops and four pawns. Spassky intentionally played to get this position, confident that his two bishops would rage all over Fischer's slow knights. Little did he know, Fischer prepared for this endgame in the exact ending prior to slamming the door closed in Spassky's face with the Ruy Lopez. We'll start on move 31, white to move.