[Event "Calgary int."]
[Site "Calgary CAN"]
[Date "2018.08.19"]
[Round "9.2"]
[White "Zierk, Steven"]
[Black "Chiku-Ratte, Olivier-Kenta"]
[Result "1-0"]
[WhiteElo "2491"]
[BlackElo "2311"]
[PlyCount "85"]

1.d4 Nf6 2.Bf4 g6 3.Nf3 Bg7 4.e3 O-O 5.Be2 d6 6.O-O c5 7.h3 b6 8.c4 Bb7 9.Nc3 Ne4 10.Nxe4 Bxe4 11.Qd2 Qc7 12.d5 Bxf3 13.Bxf3 Qb7 14.Be2 Na6 15.Rab1 Nc7 16.a4 Na6 17.e4 Nb4 18.Qd1 Qc7 19.Bd2 e6 20.f4 exd5 21.cxd5 Rae8 22.Bf3 Qb7 23.Bc3 f5 24.exf5 Rxf5 25.Bg4 Rxd5 26.Qb3 Qf7 27.Bxb4 Bd4+ 28.Kh1 cxb4 29.Rbe1 Rxe1 30.Rxe1 Rf5 31.Qd3 Bf2 32.Re2 Bc5 33.Bxf5 Qxf5 34.Qxf5 gxf5 35.Re7 b3 36.Rxa7 Bd4 37.Rb7 Kf8 38.g4 Ke8 39.gxf5 Kd8 40.f6 Bxf6 41.Rxb6 Bxb2 42.Rxb3 Bc1 43.a5 1-0