“Kasparov’s Immortal” features a rook sacrifice with a sacrificial combination lasting over 15 moves. One of the most commented chess games ever, with extensive press coverage.[Wikipedia]
You are about to witness one of the most extraordinary king-hunts in the history of chess. The opening and early middlegame are relatively quiet: Kasparov adopts an aggressive stance, but Topalov plays flexibly and obtains a fully acceptable position. Indeed, Kasparov is fighting not to be worse from move 14 to move 24, but as so often when a great champion’s back is against the wall, he gives his opponent plenty of chances to go horribly wrong. In a moment of inspiration, an amazing idea pops into Kasparov’s mind, and he embarks upon a sacrificial sequence. Topalov bravely decides to play down the main line when he had a perfectly safe alternative, but it turns out that Kasparov had been right: his pieces and pawns work in perfect harmony to hunt down the errant black king. [Burgess, Nunn, Emms]
Kasparov is playing the white pieces, and Topalov is playing the black pieces. After the final move, Topalov resigns the game. It does not actually end in checkmate.