[Event "Ch World (match)"] [Site "masterchessopen.com – Buenos Aires (Argentina)"] [Round "21"] [White "Capablanca Jose Raul (CUB)"] [Black "Alekhine Alexander A (RUS)"] [Result "0-1"] [ECO "D51"] [Opening "QGD: 4.Bg5 Nbd7 5.e3"] 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 Be7 6.Nf3 O-O 7.Rc1 a6 8.a3 h6 9.Bh4 dxc4 10.Bxc4 b5 { ! } 11.Be2 ( 11.Ba2 { !? ? 12. ?e2, 13. ?b1 } ) 11...Bb7 12.O-O ( 12.b4 { ?! } 12...a5 { ? } ) 12...c5 13.dxc5 Nxc5 14.Nd4 ( 14.Qxd8 { !? } ) ( 14.Bxf6 Bxf6 15.Nxb5 Qxd1 16.Rfxd1 Nb3 17.Rc7 Bxf3 18.Bxf3 axb5 19.Bxa8 Rxa8 { ? } ) 14...Rc8 15.b4 Ncd7 { ! } 16.Bg3 Nb6 17.Qb3 Nfd5 18.Bf3 Rc4 { ! } 19.Ne4 Qc8 20.Rxc4 { ? } ( 20.Qb1 { !? } ) 20...Nxc4 21.Rc1 Qa8 { ! } 22.Nc3 ( 22.Nc5 { ? } 22...Bxc5 23.bxc5 Rc8 24.Be2 Rxc5 25.Bxc4 Qc8 { ? } ) 22...Rc8 23.Nxd5 Bxd5 24.Bxd5 Qxd5 25.a4 Bf6 26.Nf3 Bb2 { ! } 27.Re1 ( 27.Rd1 bxa4 { ! } 28.Qxa4 Nb6 29.Rxd5 Nxa4 30.Rd1 Nc3 31.Re1 Rc4 32.Bd6 Ne4 33.Be7 f6 34.Rb1 Kf7 35.Kf1 Bc3 { ??+ } ) ( 27.Rb1 Na3 { ! } 28.Qxb2 Nxb1 29.Qxb1 Qb3 30.Qf1 bxa4 31.h3 a3 { ??+ } ) 27...Rd8 28.axb5 axb5 29.h3 e5 30.Rb1 ( { ? } 30.e4 ) 30...e4 31.Nd4 ( 31.Ne1 Qd2 32.Qc2 ( 32.Kf1 Ra8 { ?! } ( 32...Qc3 { ! } ) 33.Rd1 Ra3 34.Qxc4 { ! } 34...Qxd1 ( 34...Qxe1+ 35.Kxe1 bxc4 36.Rd8+ Kh7 37.Rc8 ) 35.Qc8+ Kh7 36.Qf5+ g6 37.Qxf7+ Bg7 38.Be5 { +?? } ) 32...Qxc2 33.Nxc2 Rd2 34.Ne1 Na3 { ??+ } ) ( 31.Nh2 Qd3 { ! } 32.Rxb2 Qxb3 33.Rxb3 Rd1+ 34.Nf1 Nd2 35.Ra3 Nxf1 { ??+ (A,E) Alekhin } ) 31...Bxd4 32.Rd1 Nxe3 { ! } {#R} 0-1