US Junior championship

(1) Young,Gregory (2327) - Harper,Warren (2310) [B87]
US Junior Championship Saint Louis USA (8), 24.06.2011

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.Bb3 b5 8.0-0 Be7 9.Qf3 Qc7 10.Qg3 0-0 11.Bh6 Ne8 12.Rad1 Bd7 13.f4 Nc6 14.Nxc6 Bxc6 15.f5 Kh8 16.fxe6 16.f6 has been the norm here. Now everything depends on how successful he is with the piece sac. [16.f6 gxh6 17.fxe7 Qxe7 18.Qf2 Ng7 19.Qd4 Rac8 20.a3 Qg5 21.Qxd6 Nf5 22.Qe5+ f6 23.Qxe6 Ne3 24.Qh3 f5 25.Be6 Rce8 26.Bxf5 Rg8 27.Kh1 Nxf1 28.Rxf1 Qd2 29.g3 Rg7 30.Qg2 Rd8 31.Rf2 Qe1+ 32.Rf1 Qe3 33.Nd5 Qd4 34.c3 Qe5 35.Ne3 Re7 36.Rf4 Rde8 37.h4 Qd6 38.Kh2 Qd3 39.Ng4 Bxe4 40.Bxe4 Rxe4 41.Nf2 1-0 (41) Rublevsky,S (2688)-Bu Xiangzhi (2676)/Ningbo 2010/CBM 137 Extra] 16...gxh6 17.Rxf7 Rxf7 18.exf7 Ng7 19.Rf1 Qa7+ [19...Rf8 20.Qd3 Bg5 21.Nd5 Bxd5 22.Bxd5 Qe7 23.Qg3 Qe5 24.Qxe5 dxe5 25.g3 Nh5 26.Rf5 Nf6 27.Be6 Nxe4 28.Rxe5 Nd6 29.h4 Bc1 30.b3 Nxf7 0-1 (30) Kelleher,W (2445)-De Firmian,N (2563)/USA 1994/EXT 2004] 20.Kh1 Rf8 21.Nd5 Bxd5 22.Bxd5 Qd4 23.c3 Qd2 The plans are pretty straightforward: Black wants to exchange as many pieces as possible, to neutralize any threats White might have planned. The idea is 24...Qg5. 24.Qg4 h5 25.Qd7 Qg5 26.g3 h4 27.Rg1 Qe5 28.gxh4 Bxh4 29.Qg4 Bf6 30.Rg3 30...h5?? 31.Qg6 Qf4 32.e5! Bxe5 33.Be4 Qxe4+ 34.Qxe4 Rxf7 35.Rf3 Re7 36.Rf8# 1-0

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