[Event "34th Chicago Open 2025"]
[Site "Chicago USA"]
[Date "2025.05.23"]
[Round "3.15"]
[White "Lehmann, Spencer"]
[Black "Kostolansky, Sebastian Lukas"]
[Result "0-1"]
[WhiteElo "2191"]
[BlackElo "2402"]
[ECO "E24"]
[PlyCount "80"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 Nc6 6.f3 b6 7.e4 Na5 8.Bd3 Ba6 9.Qe2 d6 10.f4 c5 11.e5 dxe5 12.fxe5 Nd7 13.Nf3 cxd4 14.cxd4 Rc8 15.Bg5 Qc7 16.Nd2 Nxc4 17.Rc1 b5 18.O-O Qb6 19.Qf2 O-O 20.Qh4 g6 21.Bxc4 bxc4 22.Rc3 h5 23.Be7 Nxe5 24.Rb1 Qa5 25.Ne4 Nd3 26.d5 Rb8 27.Rf1 Qb6+ 28.Kh1 Qb1 29.Nd2 Qb2 30.Ne4 Qe2 31.Ng3 Qe5 32.Ne4 exd5 33.Nf6+ Kg7 34.Ne8+ Kh7 35.Nf6+ Kh8 36.Ng4 Qf4 37.Kg1 Qxg4 38.Qf6+ Kg8 39.Bxf8 Rxf8 40.Rxd3 cxd3 0-1