(1) Mangion,Ian (1971) - Chieu,Ken (2194) [B40]
4th Irving Ellner Memorial Kenilworth, NJ (2), 22.04.2011

B40 Sicilian Defense O'Kelly Variation

1.e4 c5 2.Nf3 a6 3.c4 e6 4.Nc3 Qc7 5.Be2 Nf6 6.0-0 b6
[>=6...Nc6 7.d4 cxd4 8.Nxd4 B41 Kan Sicilian]

7.e5
[7.d4 cxd4 8.Nxd4 B41]

7...Ng4 8.d4 cxd4?N
[Predecessor: 8...Nc6 9.Bf4 cxd4 10.Nxd4 Ngxe5 11.Nxc6 dxc6 12.Qd4 f6 13.Bxe5 fxe5 14.Qg4 Bc5 15.Rad1 0-0 16.g3 Bd4 17.Bf3 Bb7 18.Qxe6+ Qf7 19.Qxf7+ Rxf7 20.Bg2 Raf8 21.Rd2 a5 22.Ne4 Ba6 23.b3 h6 24.Bh3 Re7 25.Rfd1 Kh7 26.Kg2 c5 27.f3 Bb7 28.Re2 g6 29.Rf1 Kg7 30.g4 Ref7 31.Kg3 g5 32.Bg2 Bxe4 33.Rxe4 a4 34.h4 axb3 35.axb3 Ra8 36.hxg5 hxg5 37.Re2 Ra3 38.Rb1 Loeffler,H (2034)-Marth,J (2069)/Frankfurt 2000/EXT 2001/1/2-1/2 (81)]

9.Qxd4 h5 10.Ne4?!
[>=10.Na4+/- ]

10...Nc6 11.Nd6+ Bxd6 12.Qxd6 Ra7 13.Bf4 Qxd6 14.exd6 e5 15.Bd2 e4 16.Ng5 f5 17.h3 Nf6 18.Bc3 0-0 19.h4 Bb7 20.Nh3 g6 21.Nf4 Kh7 22.b4 Ba8 23.Rfd1 a5 24.a3 Rb7 25.b5 Na7 26.Bd4 Nc8 27.c5 bxc5 28.Bxc5 Nb6 29.a4 Rbb8 30.Be3 Ne8 31.Bd2 Nc8 32.Bxa5 Ncxd6 33.Bc7 Nxc7 34.Rxd6 Rf7 35.Rxg6??
[35.Rad1+- ]

35...Nd5 36.Nxd5 Kxg6 37.Nc7 d5 38.Nxa8 Rxa8 39.b6?? Rb7-+ 40.a5 Rxb6 41.Kh2 Rb2 42.Bf1 d4 43.Kg3 d3 44.Kf4 Rxf2+ 45.Ke3 Rb2 46.a6 Ra7 47.Kd4 Rb6 0-1