[Event "Paul Keres mem. (42nd)"]
[Site "Richmond CAN"]
[Date "2017.05.22"]
[Round "6.4"]
[White "Patterson, Roger"]
[Black "Nyamdorj, Davaa-Ochir"]
[Result "1/2-1/2"]
[WhiteElo "2149"]
[BlackElo "2204"]
[PlyCount "72"]

1.c4 e6 2.Nf3 d5 3.b3 Nf6 4.g3 Bd6 5.Bb2 O-O 6.Bg2 Nbd7 7.d4 c6 8.Nbd2 b6 9.O-O Bb7 10.Qc2 Rc8 11.e4 Nxe4 12.Nxe4 dxe4 13.Qxe4 Nf6 14.Qe2 c5 15.dxc5 Bxc5 16.Rad1 Qe7 17.Ne5 Bxg2 18.Kxg2 Qb7+ 19.f3 a6 20.Rd3 b5 21.Rfd1 bxc4 22.Nxc4 Qb5 23.Qe5 Be7 24.Nd6 Rc2+ 25.R3d2 Qd3 26.Ne4 Rd8 27.g4 Bf8 28.Nxf6+ gxf6 29.Qxf6 Rxd2+ 30.Kh3 Rxb2 31.Rxd3 Rxd3 32.Qxb2 Rxf3+ 33.Kg2 Rd3 34.Qe2 Rd6 35.b4 Rd4 36.a3 Rd6 1/2-1/2