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(875546) Ivanov,A (2600) - Zamora,J (2390) [B63]
US Championship (Gp 1) Chandler (6), 30.08.1997
[Rohde]
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.0-0-0 Nxd4 9.Qxd4 a6 This move, after the exchange of knights, is a bit slow. More usual is 9 ... O-O 10 f4 Qa5. 10.f4 White does not achieve anything after 10 Bxf6 Bxf6 11 Qxd6 Qxd6 12 Rxd6 Bxc3. However, an interesting possibility was 10 e5! dxe5 11 Qxe5 Qb6 12 Be3 Qc6 13 Be2. 10...b5 11.Be2 11 e5 was still food for thought. 11...Bb7 12.Bf3 Rc8 13.Bxf6 gxf6 Dangerous for Black was 13 ... Bxf6?! 14 e5! Bxf3 15 exf6 Bxd1 16 fxg7 Rg8 17 Rxd1 and Nc3-e4 is threatened. 14.Kb1 0-0 15.f5 White has a typical advantage, but Black has his full complement of Sicilian counterplay. 15...Rc4 16.Qd3 Qc7 17.fxe6 fxe6 18.Ne2 Rc5 19.Nd4 Re5 20.Rhe1 Also not bad was the immediate 20 Bg4 Bxe4 21 Bxe6+. 20...Re8 21.Bg4 Bf8 22.Nf3 Rc5 23.Qb3 Qf7 24.Nd4 Re5 25.Qd3 Qg6 26.Qh3 Enterprising. If 26 Bf3 it would be very hard for White to make progress. 26...Bxe4 27.Re2 d5 Also unclear was the defensive try 27 ... Qf7 (not 27 ... f5? 28 Bh5). 28.Bxe6+ Kh8 29.Bg4 Bc5 30.a3 Time out for luft, but Black has some sneaky threats. 30 Nb3 was passive but probably necessary. 30...h5 31.Nf3 Since 31 Bf3 Bxf3 wins after 32 Qxf3 Bxd4 or 32 Rxe5 Bxd1, 31 Bd7 had to be played, but White is in trouble. 31...Qxg4 32.Qxg4 hxg4 33.Nxe5 Rxe5 0-1
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