[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.09"]
[Round "10"]
[White "Cortez, Carlos"]
[Black "Rivera, Omar"]
[Result "1-0"]
[ECO "C87"]
[WhiteElo "1515"]
[BlackElo "1471"]
[PlyCount "39"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Nf6 5. Re1 Be7 6. h3 0-0 7. c3 a6 8. Ba4 b5 9. Bc2 d5 10. d4 dxe4 11. dxe5 Qxd1 12. Bxd1 exf3 13. exf6 Bxf6 14. Bxf3 Bb7 15. Bf4 Rac8 16. Nd2 Ba8 17. Ne4 Bd8 18. Nc5 Bf6 19. Bg4 Rcd8 20. Bxc7 1-0

[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.08"]
[Round "9"]
[White "Rivera, Omar"]
[Black "Rosales, Carlos Arturo"]
[Result "1/2-1/2"]
[ECO "B73"]
[WhiteElo "1471"]
[BlackElo "1449"]
[PlyCount "48"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. 0-0 0-0 8. Rb1 Nc6 9. Be3 d5 10. exd5 Nxd5 11. Nxd5 Nxd4 12. Bxd4 Qxd5 13. Bxg7 Qxd1 14. Rfxd1 Kxg7 15. Rd2 Be6 16. Rbd1 h5 17. Bf3 a5 18. a3 Rab8 19. Bd5 Bxd5 20. Rxd5 Rfc8 21. c3 b6 22. Rd7 Kf8 23. f3 Ke8 24. Kf2 Rd8 1/2-1/2

[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.06"]
[Round "7"]
[White "Mayorga Araya, Sofia"]
[Black "Rivera, Omar"]
[Result "1-0"]
[ECO "C64"]
[WhiteElo "1696"]
[BlackElo "1471"]
[PlyCount "57"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Nge7 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 a6 8. Bc4 Bxc3+ 9. bxc3 0-0 10. Ng5 b5 11. Bb3 Na5 12. Qh5 h6 13. Nxf7 Rxf7 14. Bxf7+ Kf8 15. Qf3 Rb8 16. Bd5+ Nf5 17. Qxf5+ Qf6 18. Qxf6+ gxf6 19. Bxh6+ Ke7 20. e5 d6 21. f4 Bf5 22. Kf2 c6 23. Bf3 Rc8 24. g4 Bg6 25. Rae1 Nc4 26. exf6+ Kxf6 27. g5+ Kf7 28. Bg4 Rc7 29. Be6+ 1-0

[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.06"]
[Round "6"]
[White "Rugamas, Camila"]
[Black "Rivera, Omar"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1117"]
[BlackElo "1471"]
[PlyCount "70"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Nc6 4. d3 e5 5. Nbd2 Bd6 6. 0-0 0-0 7. e4 dxe4 8. dxe4 Bg4 9. Re1 Qd7 10. Nc4 Qe6 11. Qd3 Bc5 12. Bg5 Rad8 13. Qc3 Bb4 14. Qb3 Bxe1 15. Rxe1 Bxf3 16. Bxf3 Nd4 17. Qc3 Nxf3+ 18. Qxf3 Qxc4 19. Bxf6 gxf6 20. Qxf6 Qe6 21. Qg5+ Kh8 22. Re3 Rg8 23. Qh5 Rde8 24. Rf3 Qg6 25. Qh3 Rd8 26. Rf5 Qg4 27. Qh6 Rd1+ 28. Kg2 Qxe4+ 29. Rf3 Rg1+ 30. Kxg1 Qxf3 31. Qh4 f6 32. Qh6 Rd8 33. Qc1 Rd1+ 34. Qxd1 Qxd1+ 35. Kg2 Qxc2 0-1

[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.05"]
[Round "5"]
[White "Rivera, Omar"]
[Black "Martinez, Marlon"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "1471"]
[BlackElo "1711"]
[PlyCount "64"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 g6 5. h3 Bg7 6. Bd3 0-0 7. 0-0 Qc7 8. Bf4 Nh5 9. Be3 e5 10. Be2 Nd7 11. Qd2 Nhf6 12. Rad1 Re8 13. dxe5 dxe5 14. Bh6 Nc5 15. Bxg7 Kxg7 16. Qe3 Qb6 17. Bd3 Nfd7 18. Rb1 f6 19. Bc4 Ne6 20. Qd2 Ndf8 21. g3 Rd8 22. Bd3 Nc5 23. Qe3 Bxh3 24. Rfd1 Bg4 25. Kg2 Nfe6 26. Rh1 h5 27. b4 Nxd3 28. Qxb6 Nef4+ 29. gxf4 Nxf4+ 30. Kg3 axb6 31. Rbd1 Rxd1 32. Rxd1 Ra3 0-1

[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.04"]
[Round "4"]
[White "Zavala Galindo, Alejandra Beatriz"]
[Black "Rivera, Omar"]
[Result "1-0"]
[ECO "C64"]
[WhiteElo "1757"]
[BlackElo "1471"]
[PlyCount "37"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Qe7 5. 0-0 a6 6. Ba4 Ba7 7. d4 b5 8. Bc2 exd4 9. cxd4 Bb7 10. Nc3 0-0-0 11. Nd5 Qe8 12. Bf4 d6 13. Re1 h6 14. e5 dxe5 15. Bf5+ Kb8 16. Nxe5 Nxe5 17. Rxe5 Qf8 18. Nxc7 Bb6 19. Re8 1-0

[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.03"]
[Round "2"]
[White "Herrera, Marjorie"]
[Black "Rivera, Omar"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1774"]
[BlackElo "1471"]
[PlyCount "81"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 h6 4. Nf3 Nc6 5. 0-0 Bc5 6. c3 d6 7. b4 Bb6 8. a4 a6 9. Bb3 0-0 10. Nbd2 Bg4 11. Nc4 Ba7 12. Ne3 Bxe3 13. fxe3 d5 14. exd5 Nxd5 15. Qe1 Nf6 16. Bc2 Bxf3 17. Rxf3 Ne7 18. Qg3 Ng6 19. d4 e4 20. Rxf6 Qxf6 21. Bxe4 c6 22. Bd2 Qh4 23. Qf3 Rad8 24. Bf5 Qe7 25. Qg3 Qd6 26. Qg4 Ne7 27. Bc2 Qe6 28. Qf3 Ng6 29. e4 Ne7 30. Rf1 Qa2 31. Qd3 Qe6 32. Rf3 Rd7 33. h4 h5 34. Rg3 Ng6 35. e5 b5 36. a5 Qc4 37. Qf5 Qe6 38. Qxe6 fxe6 39. Bxg6 Rc8 40. Be3 Rf8 41. Bxh5 1-0

[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.03"]
[Round "3"]
[White "Rivera, Omar"]
[Black "Montoya, Katherine"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1471"]
[PlyCount "83"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bd3 0-0 8. 0-0 b6 9. Qd2 Bb7 10. Nxc6 Bxc6 11. Bh6 Qc7 12. Bxg7 Kxg7 13. f4 Rac8 14. Rae1 b5 15. e5 Ng4 16. h3 Qb6+ 17. Kh1 b4 18. Ne4 Bxe4 19. Bxe4 f5 20. exf6+ Nxf6 21. Bd3 Nh5 22. Kh2 Qd4 23. Rxe7+ Kh8 24. Re4 Qf6 25. Rxb4 Qh4 26. Qe3 Nf6 27. Qf3 Rc5 28. Rb5 Rh5 29. Rxh5 Nxh5 30. Qe3 Rb8 31. Qe5+ Nf6 32. Qxb8+ Kg7 33. Qe5 Kh6 34. Qg5+ Qxg5 35. fxg5+ Kxg5 36. Rxf6 Kxf6 37. Kg3 h5 38. Kf3 d5 39. b4 Ke5 40. Bxg6 h4 41. Kg4 d4 42. Kxh4 1-0

[Event "American Continental 16th"]
[Site "San Salvador"]
[Date "2022.05.02"]
[Round "1"]
[White "Rivera, Omar"]
[Black "Leon Calderon, Jonathan Francisco"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1471"]
[BlackElo "2126"]
[PlyCount "82"]
[EventDate "2022.05.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ESA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 b6 4. Nf3 c5 5. Be2 Ba6 6. 0-0 Bxe2 7. Qxe2 Nc6 8. c3 Nh6 9. Bg5 Qd7 10. Nbd2 cxd4 11. cxd4 Nf5 12. Nb3 h6 13. Be3 a5 14. a4 Be7 15. Rac1 Nb4 16. Ra1 0-0 17. g4 Nxe3 18. fxe3 Rac8 19. Rfc1 Rxc1+ 20. Rxc1 Qxa4 21. Nbd2 Qd7 22. h4 Qd8 23. Qh2 a4 24. Qg3 Nd3 25. Rc2 Nb4 26. Rc1 f6 27. exf6 Bd6 28. Qg2 Qxf6 29. g5 Qg6 30. Qg4 h5 31. Qg2 Qd3 32. Rc3 Qf5 33. Rc1 Nc2 34. Qf2 Qg4+ 35. Qg2 Qf5 36. Qe2 Qg4+ 37. Qg2 Qxg2+ 38. Kxg2 Nxe3+ 39. Kh3 Nc4 40. Rc2 Nxd2 41. Nxd2 Rf2 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2005.03.19"]
[Round "1"]
[White "Rivera, Omar"]
[Black "Gershenov, Ben"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2239"]
[PlyCount "101"]
[EventDate "2005.03.19"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 105 Extra"]
[Source "ChessBase"]
[SourceDate "2005.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.05.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 c6 7. Qc2 Na6 8. Nbd2 Nb4 9. Qb1 dxc4 10. a3 Na6 11. Nxc4 Qd5 12. Ne3 Qh5 13. b4 Nc7 14. Bd2 Ncd5 15. Nc4 b5 16. Nce5 Bd6 17. h3 Bxe5 18. g4 Qg6 19. Qxg6 hxg6 20. Nxe5 Bb7 21. Rfc1 Rac8 22. a4 a6 23. a5 Rfd8 24. Nd3 Nd7 25. Ra2 Nb8 26. Rac2 Kf8 27. Bg5 Ne7 28. Nc5 Ba8 29. e3 Ke8 30. Bf4 Nd5 31. Bxd5 exd5 32. Bxb8 Rxb8 33. Nxa6 Rbc8 34. Nc5 Kf8 35. Kg2 Rd6 36. Kg3 g5 37. Rh1 Ke7 38. f4 f6 39. Rf2 gxf4+ 40. exf4 Kf7 41. Re2 Kg6 42. Re7 Rcd8 43. Ne6 Rg8 44. h4 Kh7 45. Re1 Kh8 46. f5 Kh7 47. g5 Kh8 48. Nf4 Kh7 49. Ng6 Rb8 50. gxf6 Kh6 51. f7 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2004.02.16"]
[Round "6"]
[White "Rivera, Omar"]
[Black "Nicholson, Rob"]
[Result "1-0"]
[ECO "D09"]
[PlyCount "62"]
[EventDate "2004.02.14"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Be6 6. b3 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 Nge7 9. Bg2 Ng6 10. 0-0 Rb8 11. Ne4 Ngxe5 12. Qd2 Nxf3+ 13. Bxf3 Bh3 14. Rfd1 0-0 15. Qf4 h6 16. Nc3 g5 17. Qc1 Ne5 18. Be4 c5 19. Nd5 f5 20. Bg2 Bxg2 21. Kxg2 f4 22. gxf4 gxf4 23. Rg1 Qh4 24. f3 Kh8 25. Kh1 Rf5 26. Qd2 Re8 27. Rg2 d3 28. Rag1 Ng4 29. Qc3+ Ne5 30. Rg4 Qf2 31. Nxf4 dxe2 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2004.02.15"]
[Round "3"]
[White "Liebowitz, Russell"]
[Black "Rivera, Omar"]
[Result "0-1"]
[ECO "C21"]
[PlyCount "56"]
[EventDate "2004.02.14"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. c3 Nc6 4. cxd4 d5 5. e5 Nge7 6. Nf3 Bg4 7. Bb5 a6 8. Bxc6+ Nxc6 9. Nbd2 Be7 10. h3 Bh5 11. Qb3 0-0 12. 0-0 Kh8 13. a3 f6 14. Qe3 fxe5 15. Nxe5 Nxe5 16. Qxe5 Bg6 17. Nf3 Bd6 18. Bg5 Qd7 19. Qe3 Rae8 20. Qd2 Rxf3 21. gxf3 Qxh3 22. f4 Qg4+ 23. Kh2 Qxg5 24. Kh1 Qh4+ 25. Kg1 Qg4+ 26. Kh1 Qf3+ 27. Kg1 Be4 28. Kh2 Qg2# 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2004.02.15"]
[Round "4"]
[White "Rivera, Omar"]
[Black "Kushner, Howard"]
[Result "1-0"]
[ECO "E01"]
[PlyCount "67"]
[EventDate "2004.02.14"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 e6 5. g3 Bd6 6. Bg2 0-0 7. 0-0 Nbd7 8. Nbd2 b6 9. e4 dxe4 10. Ng5 Bb7 11. Ngxe4 Be7 12. b3 Nxe4 13. Nxe4 Nf6 14. Bb2 Qc7 15. Rfe1 Rad8 16. Rad1 Rd7 17. Ng5 h6 18. Nf3 Rdd8 19. Qe2 Rfe8 20. Ne5 c5 21. dxc5 Rxd1 22. Rxd1 Bxc5 23. Ng4 Nxg4 24. Qxg4 Bf8 25. Bxb7 Qxb7 26. Qd4 a5 27. Rd3 f6 28. Qg4 Kf7 29. Qh5+ g6 30. Qd1 Re7 31. Rd8 Bg7 32. Ba3 Rc7 33. Qd6 Qc6 34. Rf8+ 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2004.02.14"]
[Round "1"]
[White "Fernandez, John C"]
[Black "Rivera, Omar"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "2153"]
[PlyCount "68"]
[EventDate "2004.02.14"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 Be7 10. b3 Be6 11. Bb2 a5 12. a4 g5 13. Ne2 c5 14. c4 Ke8 15. Rad1 Rd8 16. Rxd8+ Kxd8 17. Nd2 Kc8 18. Bc3 b6 19. f3 Rd8 20. Nc1 Ne3 21. Re1 Nc2 22. Rd1 g4 23. f4 g3 24. h3 h5 25. Rf1 Bf5 26. Rf3 h4 27. Kf1 Bf8 28. Ke2 Bh6 29. Rf1 Bg6 30. Nf3 Bh5 31. Nd3 Bg6 32. Rd1 Bh5 33. Rf1 Kb7 34. Kd2 Bg6 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2004.02.14"]
[Round "2"]
[White "Rivera, Omar"]
[Black "Cohen, Bryan"]
[Result "1-0"]
[ECO "D97"]
[PlyCount "49"]
[EventDate "2004.02.14"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 0-0 7. e4 Nbd7 8. Bg5 Nb6 9. Qd3 c6 10. Be2 Be6 11. 0-0 Bc4 12. Qc2 Bxe2 13. Qxe2 Qc7 14. Rac1 a6 15. d5 c5 16. Rfd1 Ng4 17. h3 Ne5 18. Nxe5 Bxe5 19. Be3 Rac8 20. b4 Bf4 21. d6 Bxd6 22. bxc5 Bh2+ 23. Kh1 Na8 24. Nd5 Qe5 25. Bd4 1-0

[Event "Philadelphia National op 34th"]
[Site "Philadelphia"]
[Date "2003.11.30"]
[Round "5"]
[White "Milisits, Ryan Ro"]
[Black "Rivera, Omar"]
[Result "1/2-1/2"]
[ECO "C17"]
[WhiteElo "2190"]
[PlyCount "104"]
[EventDate "2003.11.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Bd2 c5 6. Nb5 Bxd2+ 7. Qxd2 0-0 8. f4 cxd4 9. Nf3 Nbc6 10. Nbxd4 Bd7 11. c3 Rc8 12. Bd3 Nxd4 13. Nxd4 Nc6 14. Bc2 Nxd4 15. Qxd4 Qa5 16. 0-0 Qc5 17. Rad1 f6 18. exf6 Qxd4+ 19. Rxd4 Rxf6 20. Re1 g6 21. Bb3 b5 22. g3 Rcf8 23. Re5 h6 24. h4 Kg7 25. Kf2 Rf5 26. Rxf5 gxf5 27. Ke3 Kf6 28. Rd3 Ke7 29. Kd4 Kd6 30. Bd1 Rc8 31. b3 a5 32. Rd2 a4 33. Rg2 axb3 34. Bxb3 h5 35. Re2 Rg8 36. Re3 Rg7 37. Bd1 Be8 38. Bb3 Ra7 39. Re2 Bc6 40. Re3 Ra8 41. Re2 Rb8 42. Re3 Bd7 43. Bd1 Be8 44. Bb3 Bf7 45. Re2 b4 46. c4 dxc4 47. Bxc4 Rg8 48. Re3 Ra8 49. Re5 Rg8 50. Re2 Ra8 51. Bb3 Rc8 52. Bc4 Ra8 1/2-1/2

[Event "Philadelphia National op 34th"]
[Site "Philadelphia"]
[Date "2003.11.29"]
[Round "4"]
[White "Rivera, Omar"]
[Black "Rouleau, John S"]
[Result "1/2-1/2"]
[ECO "A53"]
[BlackElo "2269"]
[PlyCount "109"]
[EventDate "2003.11.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. d4 d6 2. c4 Nf6 3. Nc3 Bf5 4. g3 c6 5. Bg2 h6 6. e4 Bh7 7. Nge2 Nbd7 8. 0-0 e5 9. d5 cxd5 10. cxd5 Be7 11. f3 0-0 12. Be3 Ne8 13. g4 Bg5 14. Bf2 a6 15. a4 g6 16. Ng3 Bf4 17. Nce2 Ng7 18. Nxf4 exf4 19. Ne2 f5 20. gxf5 gxf5 21. Bd4 Qg5 22. Bxg7 Qxg7 23. Nd4 Rf7 24. exf5 Bxf5 25. Kh1 Ne5 26. Nxf5 Rxf5 27. Bh3 Rg5 28. Qd4 Rf8 29. Rac1 Kh7 30. Qe4+ Kh8 31. Be6 Qg6 32. Qxg6 Rxg6 33. Rc3 Re8 34. b4 Re7 35. Rg1 Kg7 36. Rxg6+ Nxg6 37. b5 axb5 38. axb5 Nf8 39. Bc8 Kf6 40. Rc4 Ng6 41. Be6 b6 42. Rc6 Ke5 43. Rxb6 Nh4 44. Rc6 Nxf3 45. b6 Rg7 46. Rc1 Rb7 47. Rb1 Nd2 48. Rb4 f3 49. Kg1 Rg7+ 50. Rg4 Rb7 51. Rb4 Ne4 52. Kf1 f2 53. Bc8 Rb8 54. Bh3 Nc5 55. Bg2 1/2-1/2

[Event "Philadelphia National op 34th"]
[Site "Philadelphia"]
[Date "2003.11.28"]
[Round "1"]
[White "Ivanov, Alexander"]
[Black "Rivera, Omar"]
[Result "0-1"]
[ECO "C92"]
[WhiteElo "2538"]
[PlyCount "60"]
[EventDate "2003.11.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. h3 d6 9. c3 Re8 10. d4 Bf8 11. a4 Bb7 12. d5 Na5 13. Ba2 c6 14. Na3 cxd5 15. exd5 Qd7 16. Bg5 Be7 17. b4 Nc4 18. Nxc4 bxc4 19. Bxc4 e4 20. Nd2 Rac8 21. Qb3 Qf5 22. Bxf6 Bxf6 23. Re2 e3 24. fxe3 Qe5 25. Rc1 Rc7 26. e4 Rec8 27. Rc2 Qf4 28. b5 a5 29. Rf2 Qe3 30. Nf1 Qb6 0-1

[Event "Philadelphia National op 34th"]
[Site "Philadelphia"]
[Date "2003.11.28"]
[Round "2"]
[White "Rivera, Omar"]
[Black "Dougherty, Michael J"]
[Result "1/2-1/2"]
[ECO "D30"]
[BlackElo "2244"]
[PlyCount "132"]
[EventDate "2003.11.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. c4 e6 4. Qc2 Nf6 5. g3 dxc4 6. Qxc4 b5 7. Qc2 Bb7 8. Bg2 Nbd7 9. a4 Rc8 10. 0-0 Be7 11. Qb3 b4 12. Nfd2 Ba6 13. Bf3 c5 14. dxc5 Nxc5 15. Qd1 Qd4 16. Ra2 0-0 17. b3 Rfd8 18. Rc2 Nfe4 19. Bb2 Qd7 20. h4 f5 21. Qc1 Qd5 22. Qd1 Qd6 23. Kg2 Bf6 24. Bxf6 gxf6 25. Qc1 Qd4 26. Qb2 Nc3 27. Nxc3 bxc3 28. Qxc3 Qxc3 29. Rxc3 Rxd2 30. Rfc1 Rb2 31. Rxc5 Rxc5 32. Rxc5 Rxb3 33. Ra5 Rb6 34. Rc5 Rb4 35. Ra5 Rb6 36. Rc5 Rb4 37. Rc7 Rxa4 38. Rxa7 Bb5 39. Rb7 Bc4 40. Rc7 Bb3 41. Rb7 Bc4 42. Rc7 Bb3 43. h5 f4 44. h6 fxg3 45. Bh5 Kf8 46. Rf7+ Kg8 47. Rg7+ Kf8 48. Kxg3 Ra5 49. Bf3 Bc2 50. e4 f5 51. Kf4 fxe4 52. Bg4 e3 53. fxe3 Bg6 54. Rc7 Rb5 55. Rc6 Bf5 56. Be2 Ra5 57. e4 Ra4 58. Bc4 Bh3 59. Bxe6 Bxe6 60. Rxe6 Kf7 61. Rb6 Ra5 62. e5 Ra1 63. Rb7+ Kg6 64. Rb6+ Kf7 65. Rb7+ Kg6 66. Rb6+ Kf7 1/2-1/2

[Event "World op 31st"]
[Site "Philadelphia"]
[Date "2003.07.06"]
[Round "9"]
[White "Kelleher, Jeff"]
[Black "Rivera, Omar"]
[Result "0-1"]
[ECO "C08"]
[WhiteElo "2111"]
[PlyCount "78"]
[EventDate "2003.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. Bb5 Nf6 6. exd5 exd5 7. 0-0 Be7 8. dxc5 0-0 9. Nb3 Bg4 10. Bxc6 bxc6 11. Be3 Ne4 12. c3 Qc7 13. Bd4 a5 14. Re1 a4 15. Nbd2 Nxc5 16. Qc2 Ne6 17. Be5 Qb6 18. Nd4 Bc5 19. N2f3 Rfe8 20. Bg3 f6 21. h3 Bxf3 22. Nxf3 Bf8 23. Kh1 Nc5 24. Rxe8 Rxe8 25. Re1 Ra8 26. Bf4 Ne4 27. Be3 Bc5 28. Bxc5 Qxc5 29. Nd4 a3 30. f3 Ng3+ 31. Kh2 Nh5 32. b3 Qd6+ 33. Kg1 Qg3 34. Qf2 Qg5 35. Kh1 Rc8 36. Ne6 Qg6 37. Nd4 Nf4 38. Qd2 Qg3 39. b4 Nxg2 0-1

[Event "World op 31st"]
[Site "Philadelphia"]
[Date "2003.07.01"]
[Round "2"]
[White "Rivera, Omar"]
[Black "Bisguier, Arthur Bernard"]
[Result "1-0"]
[ECO "E01"]
[BlackElo "2297"]
[PlyCount "57"]
[EventDate "2003.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 Nbd7 5. Bg2 c6 6. Qc2 b6 7. 0-0 Bb7 8. b3 Rc8 9. Bb2 c5 10. dxc5 Bxc5 11. Nbd2 dxc4 12. bxc4 0-0 13. Rac1 Qe7 14. Qb1 Rfd8 15. Qa1 Ba3 16. Nb3 Bxb2 17. Qxb2 e5 18. Rfd1 Rc7 19. Nxe5 Bxg2 20. Kxg2 Nxe5 21. Rxd8+ Qxd8 22. Qxe5 Re7 23. Qb2 Qa8+ 24. Kg1 Ne4 25. h4 Rd7 26. Qe5 a6 27. Nd4 Qd8 28. Nc6 Rd1+ 29. Kg2 1-0

