DWINS: In the Classical Fianchetto Variation of the King's Indian Defense, developed after World War II by the Soviet grandmasters Isaac Boleslavsky and David Bronstein, Black gives up his pawn toehold in the center with 10...exd4 to obtain mobility for his pieces. Normally White would have played 10.e4 in place of 10.b3 and Black's strategy would have been to keep him defending his e4 pawn as a way of blunting any aggressive intentions. Instead, Timman tried to avoid pressure by limiting himself to the careful 13.e3, which Robert Byrne refers to as a negative strategy which results in a comfortable position for Kasparov as can be seen after 15...Nce4.
This game is celebrated for Kasparov's imaginative knight sacrifice, 19...Nxf2, but according to Stockfish 7, it's only good enough to draw and was actually stronger had it been played at move 17. Stockfish 7 64 POPCNT -0.57 (depth 24) 17...Nxf2 18.Qxf2 Ng4 19.Qd2 Qxe3+ 20.Qxe3 Nxe3 21.Bf3 d5 22.cxd5 cxb5 23.d6 Nxd1 24.Rxd1 b4 25.Nd5 Ra6 26.axb4 Rxd6 27.bxa5 Bg4 28.Bxg4 hxg4 29.Nb5 Rxd5 30.Rxd5 Bxb2 31.Rd7 Ra8
After 17.Rac1 h4 18.a4 hxg3 19.hxg3 Nxf2 20.Qxf2 Ng4 21.Qf3 Nxe3, Timman could have equalized according to Stockfish 7 with 22.Qf4 Nxd1 23.Rxd1 Qe3+ 24.Qxe3 Rxe3 (-0.10)
There was no way that Kasparov was going to fall for 23...cxd5?? 24.Bxd4 which wins for White.
Timman should have attempted to get out of the black bind by 29.Qd2 Ra1 30.Kg2 Rxa4 31.Be2, although he probably can't hold the the resulting endgame. Instead, he relied on the passed b-pawn that he acquired after 29.Qxb7, but its advance soon proved to be too slow to stop Kasparov's attack.
Kasparov's 33...Rb4 was perfectly fine, but in severe time pressure he missed 33...Nxf2! 34.Kxf2 R4c2+ with mate in 19 according to Stockfish 7.
After 33...Rb4, there was no time for Timman to keep on with 34.b7 in view of Rbb1 35.b8=Q (35.Qa6 Bc4) 35...Rxf1+ 36.Kg2 Rxf2+ 37.Kh3 Rh2#
After 35...Rc2, there was no defense for the white king. Timman gave up with both players having a minute left to avoid a time forfeit.