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Banikas, Hristos - Pruess, David

Round 4
Chess
Beijing

2008.10.10

1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 c5 5.O-O Nc6 6.cxd5 Nxd5 7.Nc3 Be7 8.d4 O-O 9.Nxd5 Qxd5?! ( I do not really like that. Black sould choose to enter a 'Tarrasch Defence' with the natural 9... exd5 .)

10.Be3! ( Best. Less 'effective' is 10.Ne5?! Qxd4 11.Nxc6 bxc6 12.Qc2 (12.Bxc6 Rb8 13.Qc2 Rd8 equal chances, quiet position Marosi,G-Szabo,I/Zamardi 1978) 12... Ba6 unclear position Todorovic,V-Benderac,A/Herceg Novi 2000.)

10... Qh5 ( None of the alternatives helps: a) 10... c4 11.Qc2! Nb4 12.Qc1 Qb5 13.a4 Qa6 14.Ne5 White has a moderate advantage Hausner,I-Gostisa,L/Debrecen 1992.) ( b) 10... cxd4 11.Nxd4 Qc4 12.b3 Qa6 13.Nxc6 bxc6 14.Qc2 White has a moderate advantage Berezjuk,S-Novak,M/Tatranske Zruby 2002.) ( c) 10... Qc4 11.dxc5 Rd8 (11... Bf6 12.Nd2 White has a moderate advantage Bogdanov,E-Poulton,J/France 2001) 12.b3 Rxd1 13.bxc4 Rxa1 14.Rxa1 White has a moderate advantage Pinter,J-Hernandez,R/Tbilisi 1986.) ( d) 10... Qf5 11.dxc5 Rd8 12.Qb1 Bf6 13.a3 Na5 14.Nd2 White has a moderate advantage Fossum,O-Mehdi,A/Catalan Bay 2004.) ( e) 10... Rd8 11.Ne5 Qd6 12.Nxc6 bxc6 13.dxc5 Qe5 14.Qc2 Bd7 15.Rac1 Rab8 16.Bf4 Qxb2 17.Bxb8 Rxb8 18.Qxb2 Rxb2 19.Rfd1 Be8 20.Rb1 Rc2 21.Rb8 1-0 Garcia Paolicchi,R-Nogue Fajula,J/La Pobla de Lillet 2000.)

11.dxc5 e5 (11... Bxc5? 12.g4 White has a decisive advantage Gasch,F-Reh,R/Sebnitz 2005.)

12.a3?! ( I think that better is 12.Qa4 f5 13.Qc4+ Kh8 14.Rad1 White has a moderate advantage .)

12... Bg4 13.Re1 Kh8?! (13... Rfd8 14.Qa4 Rd7 looks like a more fighting follow-up.)

14.b4 (14.Qb3 Rab8 15.Rad1 White has a moderate advantage .)

14... Rad8 15.Qc2 a6?! ( Black should make use of the 13...Kh8 'plan' and continue with 15... f5 although after 16.Rad1 f4 17.Rxd8 Bxd8 18.gxf4 exf4 19.Bd2 White still keeps a heavy plus.)

16.Rad1 Rxd1 17.Rxd1 f5 18.Rd5! White has a decisive advantage Bf6 (18... e4 19.Nd4 Nxd4 20.Bxd4 Bxe2 21.Bxe4 White has a decisive advantage .)

19.Qd2! e4 20.Nd4 Bxd4 21.Bxd4 Bxe2 (21... Nxd4 22.Qxd4 Bxe2 23.Bxe4 White has a decisive advantage .)

22.Bxe4 fxe4?! Black is lost anyway but by giving-up his queen cannot help either.

23.Rxh5 Bxh5 24.Qh6! Accurate play by the Greek GM.

24... Nxd4 25.Qxh5 Nf3+ 26.Kg2 Ne1+ 27.Kf1 Nd3 28.Qd5 Nxf2 29.Qd6! Kg8 Black resigned as after 30.Qxf8+ Kxf8 31.Kxf2 the pawn ending is easily won for White. 1-0