[Event "Ch World (match)"] [Site "masterchessopen.com Moscow (Russia)"] [Round "20"] [White "Petrosian Tigran V (ARM)"] [Black "Spassky Boris V (FRA)"] [Result "1-0"] [WhiteElo "2580"] [BlackElo "2548"] [ECO "E47"] [Opening "Nimzo-Indian: 4.e3 O-O 5.Bd3"] 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O Nc6 8.a3 Bxc3 9.bxc3 dxc4 10.Bxc4 Qc7 11.Bd3 e5 12.Qc2 Bg4 ( 12...Re8 13.Nxe5 Nxe5 14.dxe5 Qxe5 15.f3 Bd7 16.a4 Bc6 17.e4 Rad8 18.Bc4 b6 19.Bd2 Rd7 { Gligoric - Filip (Portoroz, 1958) } ) 13.Nxe5 Nxe5 14.dxe5 Qxe5 15.f3 Bd7 16.a4 ( 16.Re1 Ba4 { ! } 17.Qb2 Rad8 18.Bf1 b6 19.c4 Rfe8 20.Qxe5 Rxe5 21.e4 Nd7 22.Bb2 Re6 23.e5 Nb8 24.Be2 Nc6 { Geller - Spassky (Amsterdam, 1956) } ) 16...Rfe8 ( 16...c4 { ! } 17.Bxc4 Rac8 { ! } ) 17.e4 c4 18.Be2 Be6 ( { ? } 18...Qc5+ ) 19.Be3 Qc7 20.Rab1 Nd7 21.Rb5 b6 22.Rfb1 Qc6 23.Bd4 f6 24.Qa2 Kh8 25.Bf1 h6 26.h3 Rab8 27.a5 Rb7 ( 27...a6 28.Rxb6 Nxb6 29.axb6 Qb7 30.Qa5 { ± } ) 28.axb6 axb6 29.Qf2 { ? } ( 29.Qb2 Ra8 30.Qb4 Rba7 31.Bxb6 Ra3 32.Bd4 Rb3 33.Rxb3 cxb3 34.c4 { ! } ) 29...Ra8 30.Qb2 Rba7 { ! } 31.Bxb6 Ra2 ( 31...Ra3 32.Bf2 Rb3 33.Rxb3 cxb3 34.c4 Rb8 ) 32.Qb4 Rc2 { ? } ( 32...R8a3 { !? } ) ( 32...R2a4 33.Qe7 Rb8 34.R5b2 Raa8 35.Bd4 Re8 36.Qb4 Reb8 37.Qxb8+ Rxb8 38.Rxb8+ Nxb8 39.Rxb8+ Kh7 40.Rb6 { ? } ) 33.Bf2 Qc7 34.Qe7 Bxh3 35.gxh3 Rxf2 36.Kxf2 Qh2+ 37.Bg2 Ne5 38.Rb8+ Rxb8 39.Rxb8+ Kh7 40.Rd8 Ng6 41.Qe6 {#r} 1-0