[Event "It \"] [Site "masterchessopen.com Moscow (Russia)"] [Round "13"] [White "Portisch Lajos (HUN)"] [Black "Spassky Boris V (FRA)"] [Result "1-0"] [WhiteElo "2523"] [BlackElo "2548"] [ECO "E40"] [Opening "Nimzo-Indian: Rubinstein"] 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Ba6 6.Ng3 O-O 7.e4 Nc6 8.Bd3 d5 ( 8...e5 9.d5 Bxc3+ 10.bxc3 Na5 11.f4 { ?! } ) 9.cxd5 Bxd3 10.Qxd3 exd5 11.e5 Ne4 12.a3 { ! } ( 12.f3 { ? } 12...Nc5 { ! } 13.dxc5 d4 { ?? } ) 12...Bxc3+ 13.bxc3 f5 14.Ne2 Na5 15.h4 Nb3 16.Rb1 Nxc1 17.Rxc1 f4 18.Qf3 Qe7 ( 18...c6 19.c4 ( 19.Nxf4 Qc8 20.g3 Qa6 21.Qe2 Qxa3 22.O-O Qe7 23.Qe3 b5 24.Kg2 Rf7 ) 19...b5 ) 19.c4 c6 20.cxd5 ( 20.Nxf4 Nc5 21.g3 Ne6 22.cxd5 Nxd4 23.Qe3 Qxe5 24.Qxe5 Nf3+ 25.Ke2 Nxe5 26.dxc6 { ?± } ) 20...cxd5 21.Nxf4 Qd7 ( 21...Qb7 22.g3 Qa6 23.Qe2 Qxa3 24.O-O ) 22.g3 Qb5 23.Qe2 Qa5+ 24.Kf1 Qxa3 25.Kg2 Rf7 26.Rc2 Raf8 27.Rhc1 h6 28.Qg4 Qa4 29.e6 Rxf4 30.gxf4 Qxd4 31.Rd1 Qf6 32.Rc7 Nc5 { ? } ( 32...h5 { ! } 33.Qxh5 Qxf4 34.Rf7 Rxf7 35.Qxf7+ Qxf7 36.exf7+ Kxf7 37.Rxd5 Ke6 ) 33.f5 Qe5 34.Rxa7 h5 35.Qg6 d4 36.Re1 Qf6 37.Qxf6 gxf6 38.Kf3 d3 39.Rg1+ Kh8 40.Rgg7 {#r} 1-0