2023 Ontario Open Chess Championship May 20, 21, 22

[Halldor P. Palsson]

[ePGN "0.1;DGT LiveChess/2.2.5"]
[Event "2023 Ontario Open"]
[Site "RA Centre, Canada"]
[Date "????.??.??"]
[Round "5.1"]
[White "Perez Rodriguez, Luis Manuel"]
[Black "Sambuev, Bator"]
[Result "1-0"]
[TimeControl "90+30"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2411"]
[BlackElo "2503"]

1. e4 {[%clk 01:29:14]} {[%emt 00:01:45]} e5 {[%clk 01:29:10]} {[%emt
00:01:50]} 2. Nf3 {[%clk 01:28:54]} {[%emt 00:00:50]} Nc6 {[%clk 01:29:33]}
{[%emt 00:00:07]} 3. Bb5 {[%clk 01:28:46]} {[%emt 00:00:39]} a6 {[%clk
01:29:58]} {[%emt 00:00:05]} 4. Ba4 {[%clk 01:29:11]} {[%emt 00:00:04]} d6
{[%clk 01:30:23]} {[%emt 00:00:04]} 5. O-O {[%clk 01:26:58]} {[%emt 00:02:43]}
Bd7 {[%clk 01:30:42]} {[%emt 00:00:12]} 6. d4 {[%clk 01:22:53]} {[%emt
00:04:35]} Nxd4 {[%clk 01:28:41]} {[%emt 00:02:31]} 7. Bxd7+ {[%clk 01:20:55]}
{[%emt 00:02:28]} Qxd7 {[%clk 01:29:03]} {[%emt 00:00:07]} 8. Nxd4 {[%clk
01:21:12]} {[%emt 00:00:13]} exd4 {[%clk 01:29:28]} {[%emt 00:00:05]} 9. Qxd4
{[%clk 01:19:39]} {[%emt 00:02:03]} Nf6 {[%clk 01:29:48]} {[%emt 00:00:10]} 10.
b3 {[%clk 01:13:28]} {[%emt 00:06:42]} Be7 {[%clk 01:30:01]} {[%emt 00:00:16]}
11. Bb2 {[%clk 01:13:52]} {[%emt 00:00:07]} O-O {[%clk 01:30:13]} {[%emt
00:00:18]} 12. Nc3 {[%clk 01:12:55]} {[%emt 00:01:27]} c6 {[%clk 01:29:51]}
{[%emt 00:00:47]} 13. Rad1 {[%clk 01:10:13]} {[%emt 00:03:16]} Rad8 {[%clk
01:26:34]} {[%emt 00:03:47]} 14. Rfe1 {[%clk 01:04:00]} {[%emt 00:06:44]} Rfe8
{[%clk 01:26:20]} {[%emt 00:00:43]} 15. h3 {[%clk 00:50:32]} {[%emt 00:13:59]}
Bf8 {[%clk 01:20:35]} {[%emt 00:06:14]} 16. Re3 {[%clk 00:47:17]} {[%emt
00:03:46]} Re6 {[%clk 01:17:47]} {[%emt 00:03:17]} 17. Ne2 {[%clk 00:41:38]}
{[%emt 00:42:47]} Qe8 {[%clk 01:07:26]} 18. Ng3 {[%clk 00:35:27]} d5 {[%clk
01:06:23]} 19. e5 {[%clk 00:30:32]} Nd7 {[%clk 01:05:11]} 20. Qf4 {[%clk
00:28:34]} Bc5 {[%clk 00:58:37]} 21. Re2 {[%clk 00:24:41]} {[%emt 00:03:30]} f6
{[%clk 00:55:27]} {[%emt 00:03:40]} 22. exf6 {[%clk 00:22:47]} {[%emt
00:12:19]} Rxe2 {[%clk 00:55:25]} 23. f7+ {[%clk 00:21:36]} Qxf7 {[%clk
00:55:45]} 24. Qxf7+ {[%clk 00:21:59]} Kxf7 {[%clk 00:56:11]} 25. Nxe2 {[%clk
00:22:25]} Nf6 {[%clk 00:50:33]} 26. Nf4 {[%clk 00:21:23]} {[%emt 00:00:23]}
Ne4 {[%clk 00:49:27]} {[%emt 00:01:35]} 27. Nd3 {[%clk 00:21:42]} {[%emt
00:00:12]} Bb6 {[%clk 00:49:18]} {[%emt 00:00:33]} 28. g4 {[%clk 00:21:56]}
{[%emt 00:00:21]} Re8 {[%clk 00:42:41]} {[%emt 00:08:49]} 29. Kg2 {[%clk
00:21:51]} d4 {[%clk 00:41:48]} {[%emt 00:00:16]} 30. Re1 {[%clk 00:19:24]}
{[%emt 00:02:56]} Re6 {[%clk 00:31:55]} {[%emt 00:10:23]} 31. f3 {[%clk
00:17:13]} {[%emt 00:02:42]} Nf6 {[%clk 00:28:52]} {[%emt 00:03:32]} 32. Ne5+
{[%clk 00:15:25]} {[%emt 00:02:18]} Ke8 {[%clk 00:27:20]} {[%emt 00:02:01]} 33.
f4 {[%clk 00:15:33]} {[%emt 00:00:23]} Nd5 {[%clk 00:26:40]} {[%emt 00:01:10]}
34. Kf3 {[%clk 00:06:27]} {[%emt 00:09:37]} c5 {[%clk 00:17:30]} {[%emt
00:09:40]} 35. f5 {[%clk 00:03:18]} {[%emt 00:03:39]} Re7 {[%clk 00:17:49]}
{[%emt 00:00:11]} 36. Nd3 {[%clk 00:03:31]} {[%emt 00:00:17]} Rxe1 {[%clk
00:15:39]} {[%emt 00:05:34]} 37. Nxe1 {[%clk 00:04:00]} Kd7 {[%clk 00:15:47]}
38. Ke4 {[%clk 00:03:54]} Kd6 {[%clk 00:15:28]} 39. Nd3 {[%clk 00:02:44]}
{[%emt 00:00:34]} Bd8 {[%clk 00:14:48]} {[%emt 00:01:10]} 40. Nxc5 {[%clk
00:02:18]} {[%emt 00:00:57]} Kxc5 {[%clk 00:14:45]} {[%emt 00:00:33]} 41. Bxd4+
{[%clk 00:02:45]} {[%emt 00:00:02]} Kd6 {[%clk 00:13:49]} {[%emt 00:01:25]} 42.
Be5+ {[%clk 00:03:14]} {[%emt 00:00:02]} Kc6 {[%clk 00:13:21]} {[%emt
00:00:56]} 43. Bxg7 {[%clk 00:03:42]} {[%emt 00:00:04]} Ba5 {[%clk 00:05:56]}
{[%emt 00:07:55]} 44. a3 {[%clk 00:03:31]} {[%emt 00:00:41]} Bd2 {[%clk
00:05:34]} {[%emt 00:00:51]} 45. c4 {[%clk 00:03:10]} {[%emt 00:00:53]} Nb6
{[%clk 00:05:17]} {[%emt 00:00:45]} 46. h4 {[%clk 00:03:02]} {[%emt 00:00:40]}
Nc8 {[%clk 00:04:27]} {[%emt 00:01:20]} 47. Be5 {[%clk 00:01:48]} {[%emt
00:01:44]} Be1 {[%clk 00:04:32]} {[%emt 00:00:25]} 48. h5 {[%clk 00:01:41]}
{[%emt 00:00:38]} Nd6+ {[%clk 00:02:53]} {[%emt 00:02:09]} 49. Bxd6 {[%clk
00:01:33]} {[%emt 00:00:38]} Kxd6 {[%clk 00:03:17]} {[%emt 00:00:06]} 50. g5
{[%clk 00:01:16]} {[%emt 00:00:47]} Bd2 {[%clk 00:02:44]} {[%emt 00:01:03]} 51.
g6 {[%clk 00:00:46]} {[%emt 00:01:00]} hxg6 {[%clk 00:02:17]} {[%emt 00:00:56]}
52. fxg6 {[%clk 00:00:50]} {[%emt 00:00:26]} Ke6 {[%clk 00:02:40]} {[%emt
00:00:07]} 53. b4 {[%clk 00:00:49]} {[%emt 00:00:32]} Bc1 {[%clk 00:02:53]}
{[%emt 00:00:16]} 54. a4 {[%clk 00:01:03]} {[%emt 00:00:16]} Bd2 {[%clk
00:02:48]} {[%emt 00:00:35]} 55. b5 {[%clk 00:00:59]} {[%emt 00:00:35]} axb5
{[%clk 00:03:12]} {[%emt 00:00:06]} 56. axb5 {[%clk 00:01:09]} {[%emt
00:00:19]} Bb4 {[%clk 00:03:00]} {[%emt 00:00:42]} 57. h6 {[%clk 00:01:20]}
{[%emt 00:00:20]} Kf6 {[%clk 00:03:25]} {[%emt 00:00:04]} 58. h7 {[%clk
00:01:13]} {[%emt 00:00:38]} Kg7 {[%clk 00:03:52]} {[%emt 00:00:02]} 59. Kd5
{[%clk 00:01:38]} {[%emt 00:00:06]} b6 {[%clk 00:04:11]} {[%emt 00:00:11]} 60.
Ke6 {[%clk 00:01:34]} {[%emt 00:00:35]} Bc5 {[%clk 00:01:17]} {[%emt 00:03:23]}
61. h8=Q+ {[%clk 00:01:49]} {[%emt 00:00:15]} *



[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "5"]
[White "Dukic Zachary"]
[Black "Fritzsche Helmut (GER)"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2401"]
[BlackElo "2022"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nc4 Nxe4 5.Qe2 Qe7 6.Ne3 c6 7.b3
Nf6 8.Bb2 g6 9.Bxf6 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "5"]
[White "Vera Reynaldo (CUB)"]
[Black "Zhu Matthew"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "2443"]
[BlackElo "2029"]
[Annotator ""]
[Source ""]
[Remark ""]

1.c4 g6 2.Nc3 c5 3.Nf3 Bg7 4.d4 cxd4 5.Nxd4 Nc6 6.Nc2 Bxc3+ 7.bxc3
Qa5 8.e4 Nf6 9.f3 d6 10.Rb1 a6 11.Nb4 Ne5 12.Be2 Be6 13.Nd5 Rc8
14.Nxf6+ exf6 15.Qxd6 Nxc4 16.Bxc4 Qxc3+ 17.Bd2 Qxc4 18.Rxb7
Qc5 19.Re7+ 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "5"]
[White "Xu, Daniel"]
[Black "Reprintsev Alexander (UKR)"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2339"]
[BlackElo "2353"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.d4 Nf6 5.Nf3 c6 6.Bc4 Bg4 7.Be3
Nbd7 8.h3 Bh5 9.Be2 e6 10.Qd2 Qc7 11.Bf4 Bd6 12.Bxd6 Qxd6 13.O-O
O-O 14.Qe3 Nd5 15.Nxd5 cxd5 16.Bd3 Bg6 17.Bxg6 hxg6 18.c3 b5
19.Ne5 Nb6 20.Nd3 Na4 21.g3 $10 a5 22.a3 Rfc8 23.Kg2 Qb6 24.Rab1
Qb8 25.h4 Nb6 26.h5 gxh5 27.Qg5 Nd7 28.Qxh5 Nf6 29.Qh4 Kf8 30.Ne5
Rc7 31.Qh8+ Ng8 32.Rh1 Qe8 33.Rbe1 $10 f6 34.Nd3 g5 35.Nc5 e5
36.dxe5 Rxc5 37.Rh7 Qg6 38.e6 Rac8 39.e7+ Ke8 40.Rg7 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "5"]
[White "Gao Raymond (CAN)"]
[Black "Gao, Lucy"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2111"]
[BlackElo "0"]
[Annotator ""]
[Source ""]
[Remark ""]

1.c4 e5 2.a3 Nf6 3.d3 d5 4.cxd5 Nxd5 5.Nf3 Nc6 6.e4 Nf6 7.Qc2
h6 8.Be2 a5 9.Be3 Be6 10.Nc3 Ng4 11.Bd2 Bc5 12.O-O O-O 13.Na4
Bd6 14.Nc5 Bc8 15.b4 axb4 16.axb4 Rxa1 17.Rxa1 b6 18.Na6 Qd7
19.b5 Nd8 20.h3 Nf6 21.d4 exd4 22.e5 Re8 23.Nb8 Qe7 24.exd6 Qxe2
25.d7 Bxd7 26.Nxd7 Ne4 27.Rf1 Qxb5 28.Qxc7 Ne6 29.Qb7 Nd6 30.Qa7
Nc8 31.Qb7 Nd6 1/2-1/2

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "5"]
[White "Yang, Ryan"]
[Black "Azar Sebastien"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "0"]
[BlackElo "2077"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 c5 2.Nc3 Nc6 3.Bb5 Nd4 4.Bc4 e6 5.Nf3 a6 6.a4 Qc7 7.d3 Ne7
8.Nxd4 cxd4 9.Ne2 Nc6 10.O-O g6 11.f4 Bg7 12.Qe1 Na5 13.b3 Rb8
14.e5 b5 15.axb5 Nxc4 16.bxc4 axb5 17.Ba3 Bf8 18.Bxf8 Kxf8 19.Qb4+
Kg7 20.c5 Bb7 21.Nxd4 Rhc8 22.c6 dxc6 23.Qc5 Qd7 24.c3 b4 25.cxb4
Rd8 26.Nf3 Qxd3 27.Rad1 Qxd1 28.Rxd1 Rxd1+ 29.Kf2 Rd7 30.Ng5
Ra8 31.Kg3 Ra2 32.h3 h6 33.Ne4 Rd3+ 34.Kh2 Ba8 35.Nf6 1/2-1/2

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "5"]
[White "Han Johnathan (CAN)"]
[Black "Jaferian Koosha (IRI)"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "2274"]
[BlackElo "2163"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3
e6 8.h5 Bh7 9.Bd3 Bxd3 10.Qxd3 Nf6 11.Bd2 c5 12.O-O-O Nc6 13.Bc3
Qd5 14.dxc5 Qxd3 15.Rxd3 Bxc5 16.Kb1 Rc8 17.a3 Ke7 18.Nd4 Nxd4
19.Bxd4 Bxd4 20.Rxd4 Rhd8 21.Rhd1 Rxd4 22.Rxd4 Rc5 23.b4 Rg5
24.Rc4 Kd6 25.Kb2 Rd5 26.Kb3 Nxh5 27.Ne4+ Ke7 28.Rc8 b6 29.Ra8
Rd7 30.Nc3 Nf4 31.Nb5 Nxg2 32.Nxa7 Kd6 33.c4 h5 34.a4 h4 35.a5
bxa5 36.c5+ Kd5 37.c6 Rc7 38.Rd8+ Ke4 39.b5 Rxa7 40.b6 Ra6 41.b7
Rb6+ 42.Ka4 h3 43.b8Q Rxb8 44.Rxb8 g5 45.c7 h2 46.Rb1 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.22"]
[Round "5"]
[White "Gordon David (CAN)"]
[Black "Ramesh, Sanjay"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2237"]
[BlackElo "0"]
[Annotator ""]
[Source ""]
[Remark ""]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6 5.a4 e6 6.Bg5 Nbd7 7.e3 Bd6
8.c5 Bc7 9.b4 e5 10.Be2 h6 11.Bh4 e4 12.Nd2 g5 13.Bg3 Nf8 14.Bxc7
Qxc7 15.O-O g4 16.f3 gxf3 17.gxf3 Rg8+ 18.Kh1 exf3 19.Bxf3 Be6
20.e4 Qf4 21.exd5 cxd5 22.b5 Qxd4 23.Nde4 Qe5 24.Nxf6+ Qxf6 25.Nxd5
Qd8 26.c6 bxc6 27.Nf6+ Qxf6 28.Bxc6+ Ke7 29.Rxf6 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.22"]
[Round "5"]
[White "Umayan, Vincent"]
[Black "Zhong Ryan Yunhui"]
[Result "1-0"]
[ECO "?"]
[WhiteElo "2100"]
[BlackElo "1955"]
[Annotator ""]
[Source ""]
[Remark ""]

1.d4 d5 2.c4 dxc4 3.e3 Nf6 4.Bxc4 e6 5.Nf3 a6 6.a3 b5 7.Ba2 Bb7
8.Nc3 Nbd7 9.b4 Ne4 10.Nxe4 Bxe4 11.O-O Nb6 12.Ne5 Bd6 13.Qg4
Bg6 14.f4 Bxe5 15.dxe5 O-O 16.Bb2 Qe7 17.Bd4 Rfd8 18.Rac1 Rd7
19.Qf3 Rb8 20.Bxb6 cxb6 21.e4 Rd2 22.Bb1 Qh4 23.Qe3 Rbd8 24.h3
h6 25.Rf2 R2d4 26.Rcf1 Bh7 27.f5 Qh5 28.fxe6 fxe6 29.Qxd4 Re8
30.Qd6 Bg6 31.Rf8+ Rxf8 32.Rxf8+ Kh7 33.Qxe6 Qd1+ 34.Kh2 h5 35.Qc8
Kh6 36.Rh8+ Kg5 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.22"]
[Round "5"]
[White "Plotkin Victor (CAN)"]
[Black "Mao, Fengxi"]
[Result "1-0"]
[ECO "?"]
[WhiteElo "2267"]
[BlackElo "0"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 Na6 2.d4 c6 3.Nf3 Nc7 4.c4 d5 5.exd5 cxd5 6.Nc3 Nf6 7.Ne5
g6 8.cxd5 Bg7 9.Bc4 O-O 10.Qf3 e6 11.O-O Nfxd5 12.Rd1 Bd7 13.Bb3
Be8 14.Bd2 f6 15.Nd3 Bc6 16.Qh3 Re8 17.Rac1 Qe7 18.Re1 Qf7 19.Nxd5
Bxd5 20.Bf4 Nb5 21.Ba4 Bc6 22.Nb4 Nxd4 23.Nxc6 Nxc6 24.Be3 f5
25.b4 Rec8 26.Qh4 a5 27.b5 Nb4 28.Bb3 Nd5 29.Bd2 b6 30.Rc6 Rxc6
31.bxc6 Rc8 32.Qc4 Nc7 33.Rxe6 Kf8 34.Re8+ Qxe8 35.Qg8+ Ke7 36.Qxg7+
Kd6 37.Qf6+ Ne6 38.Bf4+ Kxc6 39.Bxe6 Kb5 40.Qe5+ Ka6 41.Bxc8+
Qxc8 42.h4 Qc4 43.a3 Qd3 44.Qe3 Qd1+ 45.Kh2 Qa4 46.g3 Qc2 47.Qd4
Kb5 48.Be3 Qc6 49.a4+ Ka6 50.Qd8 h6 51.Bxh6 Qxa4 52.Qa8+ Kb5
53.Qe8+ Kb4 54.Qxg6 Qb5 55.Be3 1-0

[Halldor P. Palsson]

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Liang Jason (USA)"]
[Black "Yang, Ryan"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2613"]
[BlackElo "0"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Bc4 Nb6 6.Bb3 Bg7 7.Ng5
e6 8.Qf3 Qe7 9.Ne4 d5 10.Nf6+ Bxf6 11.exf6 Qf8 12.c3 Bd7 13.Bf4
Na6 14.Qg3 O-O-O 15.Nd2 h6 16.Bc2 g5 17.Be5 Nc4 18.Nxc4 dxc4
19.Be4 Bc6 20.Bxc6 bxc6 21.O-O c5 22.b3 cxd4 23.cxd4 Qa3 24.Rfc1
Rd5 25.Rxc4 c5 26.Ra4 Qb2 27.Rf1 Qe2 28.Qc3 Kb7 29.Qc4 Qxc4 30.bxc4
Rd7 31.Rb1+ Nb4 32.a3 Ka8 33.axb4 cxd4 34.c5 Rd5 35.Bd6 Rd8 36.b5
d3 37.b6 Rd7 38.b7+ Rxb7 39.Rxa7+ Kxa7 40.Ra1# 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Reprintsev Alexander (UKR)"]
[Black "Shi Mihael"]
[Result "1-0"]
[ECO "C51"]
[WhiteElo "2353"]
[BlackElo "2024"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.a4 a6 6.Nc3 Nf6 7.Nd5
Nxd5 8.exd5 Nd4 9.Nxd4 Bxd4 10.Ra3 Bxf2+ 11.Kxf2 Qh4+ 12.Rg3
Qxc4 13.Rxg7 Qd4+ 14.Ke1 Qe4+ 15.Qe2 Qxe2+ 16.Kxe2 Kf8 17.Rg3
Rg8 18.Rc3 Ke7 19.Kf2 c6 20.Re1 d6 21.dxc6 bxc6 22.Rxc6 Bd7 23.Rb6
Rgb8 24.a5 Rxb6 25.axb6 Bc6 26.d4 e4 27.c4 d5 28.Bg5+ Kd7 29.c5
Bb5 30.Re3 Rg8 31.Bf4 Bc6 32.Rh3 Rg7 33.Rh6 Rg6 34.Rxh7 Rf6 35.Ke3
Ke6 36.Rh8 Kd7 37.h4 Re6 38.h5 Re8 39.Rh7 Rg8 40.Rxf7+ Ke6 41.Rc7
Bb5 42.g3 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Moses Neil"]
[Black "Fritzsche Helmut (GER)"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "1912"]
[BlackElo "2022"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 e5 2.Nf3 Nf6 3.Nc3 Bb4 4.Nxe5 Qe7 5.Nf3 Nxe4 6.Nxe4 Qxe4+
7.Qe2 Qxe2+ 8.Bxe2 O-O 9.c3 Ba5 10.d4 d5 11.Bf4 Re8 12.a4 c6
13.Kd2 Bf5 14.Nh4 Be6 15.Bd3 g6 16.h3 Bd8 17.Nf3 Bf6 18.g4 Nd7
19.Ne5 Bg7 20.Bg3 Nxe5 21.dxe5 f6 22.exf6 Bxf6 23.f4 Bf7 24.h4
d4 25.Bf2 dxc3+ 26.bxc3 Rad8 27.Kc2 a6 28.f5 Bd5 29.fxg6 hxg6
30.Rhe1 Bf7 31.Rad1 Rxe1 32.Rxe1 Bb3+ 33.Kxb3 Rxd3 34.Re8+ Kf7
35.Re3 Rxe3 36.Bxe3 Bxh4 37.Kc4 Ke6 38.Kc5 Bd8 39.Bf4 Kd7 40.c4
Bc7 41.Bd2 Ke6 42.Kd4 Bb6+ 43.Ke4 Bc5 44.Bc3 b5 45.cxb5 cxb5
46.axb5 axb5 47.Kf4 Be7 48.g5 b4 49.Bb2 b3 50.Kg4 Bd6 51.Bc3
Be5 0-1

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Sambuev Bator (CAN)"]
[Black "Vera Reynaldo (CUB)"]
[Result "1-0"]
[ECO "D86"]
[WhiteElo "2483"]
[BlackElo "2443"]
[Annotator ""]
[Source ""]
[Remark ""]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4
O-O 8.Ne2 b6 9.h4 Bb7 10.f3 c5 11.h5 b5 12.Bb3 c4 13.Bc2 b4 14.hxg6
hxg6 15.Rb1 a5 16.Kf2 Nc6 17.Bh6 e5 18.d5 Bxh6 19.Rxh6 Qb6+ 20.Kg3
Qe3 21.Qh1 Qg5+ 22.Kf2 Ne7 23.cxb4 axb4 24.Rxb4 Bxd5 25.exd5
Nxd5 26.Rb7 Nf6 27.Qc1 Qxc1 28.Nxc1 Ra3 29.Rh1 Rd8 30.Rd1 Rxd1
31.Bxd1 Nd5 32.Be2 Rc3 33.Rb1 Rc2 34.a4 c3 35.a5 Rb2 36.Ra1 c2
37.Ra2 Rxa2 38.Nxa2 Nb4 39.Nc1 Kf8 40.a6 Nc6 41.Bd3 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Zhu Matthew"]
[Black "Dukic Zachary"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2029"]
[BlackElo "2401"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5
a6 8.Na3 b5 9.Bxf6 gxf6 10.Nd5 f5 11.g3 fxe4 12.Bg2 Be6 13.Bxe4
Rc8 14.c3 Bg7 15.Qh5 Ne7 16.Rd1 Rc5 17.Nxe7 Qxe7 18.Nc2 d5 19.Bf5
d4 20.Bxe6 Qxe6 21.O-O dxc3 22.bxc3 O-O 23.Ne3 f5 24.Rd2 Rxc3
25.Rfd1 Qh6 26.Qe2 Rc6 27.Rd7 Rcf6 28.Qc2 Qh5 29.Qc7 Rg6 30.Rd8
f4 31.Ng2 Rgf6 32.R1d7 Bh6 33.Qc2 Qg6 34.Qb3+ Kh8 35.Qb2 Qe4
36.f3 Qxf3 37.Qxe5 fxg3 38.hxg3 Qf2+ 39.Kh2 Bg7 40.Rxf8+ Bxf8
41.Rf7 Be7 42.Qb8+ 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Han Johnathan (CAN)"]
[Black "Plotkin Victor (CAN)"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2274"]
[BlackElo "2267"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7
7.Be3 Nc6 8.Qd2 Be6 9.O-O-O Qd7 10.Kb1 a6 11.h3 O-O-O 12.Nd4
Bf6 13.Nxe6 fxe6 14.g4 g6 15.Bg2 Rhf8 16.Rhf1 Rf7 17.c4 Bg7 18.Qd3
Ne5 19.Qb3 Nf3 20.Bd4 Qc6 21.Bxg7 Nd2+ 22.Rxd2 Qxg2 23.Rfd1 Rxg7
24.c5 Re7 25.cxd6 Rxd6 26.Qc3 Kd7 27.Qe5 Qc6 28.b3 b6 29.f4 Rxd2
30.Rxd2+ Kc8 31.f5 gxf5 32.gxf5 Re8 33.Re2 Qh1+ 34.Kb2 Qxh3 35.fxe6
Qf3 36.Re4 Re7 37.Qd5 Qf6+ 38.Re5 Kb8 39.a4 a5 40.Ka2 Ka7 41.Qe4
Qf2 42.Rf5 Rxe6 1/2-1/2

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Jaferian, Koosha"]
[Black "Wang Derek"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2383"]
[BlackElo "2013"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 c5 2.Nc3 Nc6 3.Bb5 e6 4.Bxc6 bxc6 5.d3 d5 6.f4 Ne7 7.Nf3
g6 8.O-O Bg7 9.e5 Rb8 10.b3 Ba6 11.Na4 c4 12.dxc4 dxc4 13.Nc5
Qc8 14.Ba3 Nd5 15.Ne4 Bf8 16.Bxf8 Kxf8 17.Nd6 Qd8 18.Rf2 h6 19.bxc4
Ne3 20.Qd4 Qb6 21.Re1 Nxc4 22.Nxc4 Qxd4 23.Nxd4 Bxc4 24.Nxc6
Rc8 25.Nd4 Bxa2 26.Ra1 Bd5 27.Rxa7 Rc5 28.Rd2 Kg7 29.Kf2 Rb8
30.g3 Rb1 31.Ke3 Rc3+ 32.Rd3 Rc4 33.Rd2 Rc3+ 34.Rd3 Rc4 35.Raa3
Re1+ 36.Kd2 Rh1 37.h4 Rh2+ 38.Kc1 Be4 39.Nxe6+ Kh7 40.Nd4 Bxd3
41.Rxd3 Rb4 42.e6 fxe6 43.Nxe6 Rb7 44.Rc3 Rg2 45.Nd4 Rg1+ 46.Kd2
Rg2+ 47.Ne2 Re7 48.Re3 Rd7+ 49.Ke1 Rh2 50.Re5 Rh1+ 51.Kf2 Rc7
52.c3 Rh2+ 53.Kf3 Rxe2 54.Rxe2 Rxc3+ 55.Re3 Rc7 56.Kg4 Kg7 57.h5
gxh5+ 58.Kxh5 Rc5+ 59.Re5 Rc3 60.Kg4 Kf6 61.Ra5 Kg6 62.Ra6+ Kg7
63.f5 Rc5 64.Rg6+ Kh7 65.Re6 Kg7 66.Kf4 Ra5 67.g4 Rb5 68.Re7+
Kf6 69.Rh7 Rb4+ 70.Kg3 Rb6 71.Rxh6+ Kg5 72.Rh5+ Kf6 73.Kh4 Rb7
74.Rh6+ Kf7 75.Kg5 Rb4 76.Rh7+ Kg8 77.Ra7 Rc4 78.f6 Rb4 79.Kf5
Rc4 80.g5 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Perez, Luis Manuel"]
[Black "Gao Raymond (CAN)"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2411"]
[BlackElo "2111"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4
h6 8.Bh4 Qb6 9.a3 Be7 10.Bf2 Qc7 11.Qf3 Nbd7 12.O-O-O b5 13.g4
Bb7 14.Kb1 Nc5 15.Bd3 d5 16.e5 Nfe4 17.Be1 O-O-O 18.Qe3 Kb8 19.Bxe4
Nxe4 20.Nxe4 dxe4 21.Bb4 Rc8 22.c3 Bd5 23.Bxe7 Qxe7 24.Nf5 Qc7
25.Nd6 Rcd8 26.Rhf1 Rxd6 27.exd6 Qxd6 28.f5 Re8 29.Rf2 Qc6 30.fxe6
Bxe6 31.Rfd2 Kb7 32.Rd6 Qc7 33.Qxe4+ Kb8 34.Qd4 Bc8 35.Qxg7 f5
36.Qxc7+ Kxc7 37.Rxh6 fxg4 38.Kc1 Re2 39.Rf1 Be6 40.Rff6 Bc8
41.Rf7+ Kb8 42.Rh8 Re6 43.Rff8 Rc6 44.Kd2 Kb7 45.Rxc8 Rxc8 46.Rxc8
Kxc8 47.Ke3 Kc7 48.Kf4 Kc6 49.Kxg4 Kc5 50.h4 Kc4 51.h5 Kb3 52.h6
Kxb2 53.h7 Kxc3 54.h8Q+ Kb3 55.Qa8 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "4"]
[White "Mao, Fengxi"]
[Black "Xu, Daniel"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "0"]
[BlackElo "2339"]
[Annotator ""]
[Source ""]
[Remark ""]

1.a4 e5 2.e4 Nf6 3.Nc3 Bb4 4.Nd5 Bc5 5.Nxf6+ Qxf6 6.Qf3 Nc6 7.Qxf6
gxf6 8.c3 a5 9.Nf3 f5 10.exf5 e4 11.d4 Be7 12.Nd2 d5 13.f3 Bxf5
14.fxe4 dxe4 15.Nc4 O-O-O 16.Ne3 Bg6 17.Bc4 Bd6 18.O-O Rd7 19.Bb5
Rdd8 20.Nc4 Rhg8 21.Bg5 Be7 22.Bxe7 Nxe7 23.Nxa5 Bh5 24.Rae1
Bf3 25.Rf2 c6 26.Bc4 Rg5 27.Nb3 Rdg8 28.g3 Nf5 29.Bxf7 Nxg3 30.hxg3
Rxg3+ 31.Kh2 Rg2+ 32.Rxg2 Rxg2+ 33.Kh3 Rxb2 34.Nc5 Rc2 35.Re3
b6 36.Ne6 Rc1 37.Ng5 Ra1 38.Be6+ Kc7 39.Nxf3 exf3 40.Rxf3 Rxa4
41.Rf7+ Kd6 42.Bg4 Kd5 43.Rf6 c5 44.Bf3+ Kc4 45.d5 Kxc3 46.Rxb6
Rd4 47.d6 c4 48.Bg4 Kd2 49.Rb1 Rd3+ 50.Kh4 Kc2 51.Bf5 Kxb1 52.d7
Kc1 53.Bxd3 cxd3 54.d8Q d2 55.Qc7+ Kb1 56.Qxh7+ Kc1 57.Qc7+ Kb1
58.Qb6+ Kc1 59.Qe3 Kc2 60.Qe2 Kc1 61.Qc4+ Kb1 62.Qd3+ Kc1 63.Qc3+ 1-0

[Halldor P. Palsson]

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "3"]
[White "Dukic Zachary"]
[Black "Labib Daniel"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "2401"]
[BlackElo "2113"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3
d6 8.a3 O-O 9.Nc3 Na5 10.Ba2 Be6 11.b4 Bxa2 12.Rxa2 Nc6 13.Bg5
Ng4 14.Bd2 Nf6 15.Nd5 Nxd5 16.exd5 Na7 17.a4 c6 18.axb5 Nxb5
19.c4 Na7 20.Rxa6 cxd5 21.Qa4 e4 22.dxe4 dxe4 23.Nd4 Bf6 24.Be3
Qc7 25.b5 Rfc8 26.b6 Qxc4 27.b7 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "3"]
[White "Yang, Ryan"]
[Black "Perez, Luis Manuel"]
[Result "1/2-1/2"]
[ECO "C29"]
[WhiteElo "0"]
[BlackElo "0"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3 Nc6 6.Bb5 Bc5 7.Nge2
Qh4+ 8.g3 Qg4 9.Qxg4 Bxg4 10.d4 Nxc3 11.bxc3 Bb6 12.Rf1 Ba5 13.Bd2
O-O 14.Rf4 Bd7 15.c4 Bxd2+ 1/2-1/2

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "3"]
[White "Ramesh, Sanjay"]
[Black "Liang Jason (USA)"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "0"]
[BlackElo "2613"]
[Annotator ""]
[Source ""]
[Remark ""]

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e4 b5 7.Bd2 a5
8.axb5 Bxc3 9.Bxc3 cxb5 10.b3 Nf6 11.Nd2 Bb7 12.bxc4 b4 13.Bb2
Nxe4 14.Bd3 Nf6 15.O-O O-O 16.Re1 Nbd7 17.Re3 Qc7 18.Rh3 Rfe8
19.d5 h6 20.Ne4 Nxe4 21.Bxe4 exd5 22.Bxg7 Kxg7 23.Qh5 Qf4 24.Rg3+
Kf8 25.Bf3 Nf6 26.Qh3 Bc8 27.Qxh6+ Qxh6 0-1

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "3"]
[White "Plotkin Victor (CAN)"]
[Black "Moses Neil"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2267"]
[BlackElo "1912"]
[Annotator ""]
[Source ""]
[Remark ""]

1.Nf3 Nf6 2.d4 d5 3.c4 c6 4.e3 Bf5 5.Nc3 e6 6.Bd3 Bxd3 7.Qxd3
Bd6 8.O-O O-O 9.e4 dxe4 10.Nxe4 Nxe4 11.Qxe4 Nd7 12.Rd1 Qc7 13.b3
Nf6 14.Qc2 c5 15.h3 cxd4 16.Nxd4 a6 17.Be3 Rad8 18.Rac1 Bf4 19.Qe2
Rd7 20.Nf3 Rfd8 21.Rxd7 Rxd7 22.Bxf4 Qxf4 23.Rd1 h6 24.Rxd7 Nxd7
25.Qd2 Qxd2 26.Nxd2 Kf8 27.Kf1 Ke7 28.Ke2 e5 29.b4 f5 30.Kd3
Kd6 31.Nb3 b6 32.a4 a5 33.c5+ bxc5 34.bxa5 Kd5 35.Kc3 e4 36.Nd2
f4 37.Nc4 Kc6 38.a6 Nb6 39.a7 Na8 40.Ne5+ Kb7 41.Kc4 Nb6+ 42.Kxc5
Nxa4+ 43.Kd4 e3 44.fxe3 fxe3 45.Kxe3 Kxa7 46.Kf4 Nc3 47.Kf5 Nd5
48.g3 Kb7 49.Kg6 Ne7+ 50.Kf7 Nf5 51.g4 Ne3 52.Kxg7 Nd1 53.Kxh6
Nf2 54.h4 Kc7 55.g5 Kd6 56.Nf7+ Ke7 57.Kg7 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "3"]
[White "Wang Derek"]
[Black "Umayan, Vincent"]
[Result "1-0"]
[ECO "D58"]
[WhiteElo "2013"]
[BlackElo "2100"]
[Annotator ""]
[Source ""]
[Remark ""]

1.Nf3 Nf6 2.d4 e6 3.c4 d5 4.Nc3 Be7 5.Bg5 h6 6.Bh4 O-O 7.e3 b6
8.Bd3 Bb7 9.O-O Nbd7 10.Qe2 Ne4 11.Bxe7 Qxe7 12.cxd5 exd5 13.Ba6
Bxa6 14.Qxa6 Nxc3 15.bxc3 c5 16.a4 Rfc8 17.a5 Rc7 18.Rfb1 Rac8
19.axb6 Nxb6 20.Ne5 cxd4 21.cxd4 Rc2 22.Nd3 R8c7 23.Ra2 Qe4 24.Rxc2
Rxc2 25.Rf1 Nc4 26.Qc8+ Kh7 27.Nc5 Nxe3 28.Nxe4 Rxc8 29.fxe3
dxe4 30.Rxf7 Ra8 31.d5 a5 32.d6 Rd8 33.Ra7 Rxd6 34.Rxa5 Rd1+
35.Kf2 Rd2+ 36.Kf1 Kg6 37.Re5 Kf6 38.Rxe4 g5 39.Rd4 Rxd4 40.exd4
Kf5 41.Kf2 Ke4 42.Ke2 h5 43.h4 gxh4 44.d5 Kxd5 1-0

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "3"]
[White "Vera Reynaldo (CUB)"]
[Black "Han Johnathan (CAN)"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2443"]
[BlackElo "2274"]
[Annotator ""]
[Source ""]
[Remark ""]

1.Nf3 Nf6 2.c4 e6 3.d4 d5 4.e3 b6 5.Nc3 Bb7 6.cxd5 exd5 7.Ne5
a6 8.Bd3 Bd6 9.f4 c5 10.Qf3 Nc6 11.O-O cxd4 12.exd4 Nxd4 13.Qh3
O-O 14.Nd7 Re8 15.Nxf6+ Qxf6 16.Qxh7+ Kf8 17.Bd2 Ke7 18.Rae1+
Kd7 19.Qh3+ Ne6 20.Qf3 Nc5 21.Qh3+ Ne6 22.Qf3 Nc5 23.Qh3+ Ne6 1/2-1/2

[Event "Ontario Open"]
[Site "Ottawa (Canada)"]
[Date "2023.05.21"]
[Round "3"]
[White "Azar Sebastien"]
[Black "Reprintsev Alexander (UKR)"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2077"]
[BlackElo "2353"]
[Annotator ""]
[Source ""]
[Remark ""]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nc3 Bb4 6.Ndb5 Kd8 7.Qd5
Qe7 8.Bf4 d6 9.O-O-O Nf6 10.Qc4 a6 11.Nxc7 Qxc7 12.Nd5 Qa5 13.Nxf6
gxf6 14.Qxf7 Bg4 15.Qxf6+ Kc7 16.Qg7+ Bd7 17.Bc4 Rhe8 18.Rd5
b5 19.e5 Rad8 20.Rhd1 Kc8 21.exd6 Qb6 22.Bb3 Qxf2 23.Bd2 Bxd2+
24.R5xd2 Qe3 25.Bd5 Ne5 26.Kb1 h6 27.b3 Qg5 28.Qh7 Ng6 29.Bf7
Re1 30.Rd5 Qxd5 31.Rxe1 Qd2 32.Rc1 Ne5 33.Qe4 Qxd6 34.Qa8+ Qb8
35.Qxa6+ Qb7 36.Qxb7+ Kxb7 37.Bd5+ Bc6 38.Bxc6+ Nxc6 39.c3 Rd2
40.Rc2 Rd3 41.Kb2 Re3 42.Rf2 Ne5 43.Kc2 Re1 44.h3 Ra1 45.Rf5
Rxa2+ 46.Kd1 Ng6 47.Rxb5+ Kc6 48.Rh5 Rxg2 49.Rxh6 Kd5 50.Rh7
Ke4 51.Rg7 Kd3 52.Ke1 Ke3 53.Kd1 Rd2+ 54.Kc1 Rd6 55.Kb2 Nf4 56.b4
Kd2 57.Kb3 Rd3 58.Kc4 Rxc3+ 59.Kb5 Rxh3 60.Rg1 Kc3 61.Kc5 Nd3+
62.Kd5 Rh5+ 63.Ke6 Nf4+ 64.Kf6 Rb5 65.Re1 Nd3 66.Re8 Kd4 67.Re7
Ne5 68.Re6 Ke4 69.Rd6 Rxb4 70.Ra6 Nd7+ 71.Kg6 Rb5 72.Ra4+ Ke5
73.Kg5 Nc5 74.Ra8 Rb4 75.Ra5 Rc4 76.Rb5 Rc3 77.Kg4 Rc1 78.Ra5
Ke4 79.Kg5 Rg1+ 80.Kf6 Rf1+ 81.Kg6 Nb7 82.Ra7 Rb1 83.Kg5 Rb6
84.Ra4+ Ke5 85.Ra7 Rb2 86.Kg4 Rb3 87.Ra1 Nd6 88.Ra5+ Nb5 89.Ra1
Rb4+ 90.Kg5 Nd6 91.Ra5+ Ke6 92.Ra6 Rc4 93.Rb6 Ke5 94.Ra6 Ne4+
95.Kg6 Nc5 96.Ra5 Rc1 97.Rb5 Rg1+ 98.Kf7 Kd5 99.Ra5 Kd6 100.Ra2
Rf1+ 101.Kg6 Rf3 102.Ra1 Rf4 103.Ra2 Ke6 104.Kg5 Rc4 105.Re2+
Ne4+ 106.Kg6 Ke5 107.Re1 Rc7 108.Ra1 Rc6+ 109.Kg7 Ng3 110.Ra5+
Kf4 111.Kf7 Nf5 112.Ra1 1/2-1/2