[Event "North American-ch U20"]
[Site "Calgary CAN"]
[Date "2024.08.15"]
[Round "4.1"]
[White "Liang, Jason"]
[Black "Johnson, Donald"]
[Result "0-1"]
[WhiteElo "2398"]
[BlackElo "2209"]
[PlyCount "174"]

1.d4 Nf6 2.Nf3 d5 3.Bf4 c5 4.e3 Nc6 5.Nbd2 Qb6 6.dxc5 Qxb2 7.Rb1 Qc3 8.Bb5 e6 9.O-O Be7 10.e4 O-O 11.e5 Nd7 12.Nb3 Qb4 13.Nfd4 Nxd4 14.Nxd4 Qxc5 15.Re1 a6 16.Bd3 b5 17.Re3 g6 18.c3 Qc7 19.g3 Nc5 20.h4 Ne4 21.Bxe4 dxe4 22.Qg4 f5 23.Qe2 Bc5 24.Rd1 Qf7 25.Nb3 Bxe3 26.Qxe3 Bb7 27.Rd6 Bd5 28.Nc5 Rad8 29.Bg5 Rxd6 30.exd6 Bc6 31.Qd4 e3 32.Bxe3 e5 33.Qxe5 Re8 34.d7 Rxe5 35.d8=Q+ Re8 36.Qd6 Qd5 37.Qxd5+ Bxd5 38.Nxa6 Bxa2 39.Nb4 Bc4 40.Nc6 Ra8 41.Nb4 Kf7 42.Kg2 Be2 43.f3 Ke6 44.Kf2 Bc4 45.Bd4 Ra1 46.Ke3 Re1+ 47.Kf4 Rf1 48.Ke3 Bd5 49.Ke2 Bc4+ 50.Ke3 Bd5 51.Ke2 Rb1 52.Ke3 Bb7 53.Nd3 Kd5 54.g4 fxg4 55.fxg4 Rh1 56.Nf4+ Kc4 57.Bf6 Rf1 58.Be5 Bc8 59.Ke2 Rh1 60.Ng2 Bxg4+ 61.Kf2 Be6 62.Bf6 Rb1 63.Nf4 Bf7 64.Ke3 Re1+ 65.Kd2 Re8 66.Nd3 Kd5 67.Bg5 Ke4 68.Nc5+ Kf3 69.Kd3 Kg4 70.Ne4 Bc4+ 71.Kd4 Rh8 72.Ke5 h6 73.Be7 Ra8 74.Nd6 Ra1 75.Kf6 Bd3 76.Nf7 Kxh4 77.Ne5 Be4 78.Nxg6+ Bxg6 79.Kxg6+ Kg4 80.Kxh6 Kf5 81.Bb4 Rg1 82.Bc5 Rg2 83.Bb4 Ke4 84.Kh5 Kd3 85.Kh4 Rc2 86.Kg4 Rxc3 87.Bxc3 Kxc3 0-1