[Event "Calgary int."]
[Site "Calgary CAN"]
[Date "2013.05.16"]
[Round "4"]
[White "Kostadinov, Georgi"]
[Black "Langer, Mikhail"]
[Result "0-1"]
[WhiteElo "2082"]
[BlackElo "2237"]
[PlyCount "77"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4 a6 8.a4 Bg4 9.Be2 Bg7 10.h3 Bxf3 11.Bxf3 O-O 12.O-O Nbd7 13.Bg5 Re8 14.Qc2 c4 15.Be2 Qc7 16.Be3 Nc5 17.f3 Rac8 18.Ra3 Re7 19.Bf2 h6 20.g4 b6 21.Kg2 Qb8 22.Bxc4 b5 23.axb5 axb5 24.Bxb5 Rb7 25.Qe2 Nfxe4 26.fxe4 Bxc3 27.Rxc3 Rxb5 28.Rc2 Rb3 29.Bd4 Nd3 30.Bc3 Nxb2 31.Qf3 Qc7 32.Rxb2 Rxc3 33.Qf6 Rc2+ 34.Rf2 Rxb2 35.Qxb2 Qc4 36.Qe2 Qd4 37.Qf3 Rc7 38.Ra2 Rc3 39.Ra4 0-1