[Event "GRENKE Chess Open 2017"] [Site "Karlsruhe GER"] [Date "2017.04.16"] [Round "7.40"] [White "Jahncke,G"] [Black "Potkin,V"] [Result "0-1"] [WhiteElo "2350"] [BlackElo "2594"] [ECO "D85"] [Opening "Gruenfeld: Exchange, 5.e4"] 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.Be3 Qa5 9.Qd2 O-O 10.Rc1 Nd7 11.d5 Nf6 12.c4 Qxd2+ 13.Nxd2 b6 14.h3 Ne8 15.g4 f5 16.gxf5 gxf5 17.Bg5 Rf7 18.Be2 fxe4 19.Nxe4 Nd6 20.Ng3 Bd4 21.Rh2 Bf5 22.Bh5 Bg6 23.Bg4 Kf8 24.Ke2 Bb2 25.Re1 Bf6 26.f4 Bxg5 27.fxg5 Nxc4 28.Be6 Rf4 29.h4 Bf7 30.Rf2 Rxf2+ 31.Kxf2 Rd8 32.Bf5 Bg8 33.h5 Rxd5 34.g6 hxg6 35.Bxg6 Ne5 36.Be4 Nd3+ 37.Bxd3 Rxd3 38.Nf5 Rd5 39.Nxe7 Rxh5 {#R} 0-1