(1) Leko,P (2722) - Vallejo Pons,F (2663) [B90]
XXI SuperGM Linares ESP (13), 04.03.2004

B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nb3 Be7 8.f3 Be6 9.Qd2 0-0 10.0-0-0 a5 11.Bb5 Na6 12.Qe2 Qb8N
[ 12...Qc8 13.Na4 Nb4 14.Kb1 Qc7 15.a3 Nc6 16.Nb6 Rad8 17.Nd5 Bxd5 18.exd5 Nb8 19.Qc4 Qxc4 20.Bxc4 Rc8 21.Bb5 Bd8 22.g4 Nfd7 23.Nd2 Bb6 24.Bg5 Bd8 25.Bxd8 Rfxd8 26.Nc4 Rc7 27.Nxd6 Sax,G-Quinteros,M/Moscow 1982/IZT/1-0 (40); 12...Nc7 13.Nc5 ( 13.Bb6 Qc8 14.Nxa5 Nxb5 15.Qxb5 Qd7 16.Nb3 Qxb5 17.Nxb5 Rxa2 18.Nc3 Ra6 19.Be3 Bxb3 20.cxb3 Rc8 21.Kb1 Rca8 22.Rc1 Rc6 23.Rhd1 Rac8 24.Rd3 Kf8 25.Rcd1 Ra8 26.b4 Rca6 27.Kc2 Ne8 Szelag,M-Tomczak,R/Poznan 1999/EXT 2003/1/2-1/2 (45)) 13...Nxb5 14.Qxb5 Qc8 15.Nxe6 fxe6 16.Rd3 Ra6 17.a4 ( 17.Rhd1 Ne8 18.Qb3 Kf7 19.g3 Qc6 20.a4 Nf6 21.Nb5 Qd7 22.Bc5 d5 23.Bxe7 Qxe7 24.exd5 Nxd5 25.c4 Qc5 26.Kb1 Nb4 27.Nd6+ Kg8 28.Ne4 Qc8 29.Rd7 Rc6 30.c5 b6 31.Re7 Nd5 Wedberg,T-Vokac,M/Leon 2001/CBM 86/1-0 (39)) 17...Rf7 18.Rhd1 Bf8 19.Qb3 Qe8 20.Kb1 Rc6 21.g4 Rc8 22.Bb6 Nd7 23.Bg1 Nf6 24.R3d2 Rc6 25.Nb5 Rd7 26.h4 Qf7 27.Bh2 Lastin,A-Dvoirys,S/Moscow 1999/CBM 75/1-0 (45)]

13.Kb1 Nc7 14.Bg5 Rc8 15.Bxf6
[ 15.Ba4!?= ]

15...Bxf6 16.Ba4 Na6 17.Nd5
[ 17.Nxa5?? Nc5 18.Bb3 Nxb3 19.cxb3 Rxa5-+ ]

17...Bxd5 18.exd5
[ 18.Rxd5 Nc7-/+ ]

18...Qc7 19.c3 1/2-1/2