[Event "Rio de Janeiro-ch op"]
[Site "Rio de Janeiro"]
[Date "2011.07.17"]
[Round "6"]
[White "Katz, David James"]
[Black "Katz, Rafael Marcos"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "37"]
[EventDate "2011.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. e4 d6 4. Nc3 Nf6 5. Bc4 0-0 6. Ng5 e5 7. Nxf7 Rxf7 8. Bxf7+ Kxf7 9. dxe5 Ne8 10. exd6 Qxd6 11. Qxd6 Nxd6 12. Be3 Nc6 13. 0-0-0 Bxc3 14. bxc3 Nxe4 15. Bd4 Nxd4 16. Rxd4 Nxf2 17. Rf1 Bf5 18. Rxf2 Re8 19. g4 1-0

[Event "Rio de Janeiro-ch op"]
[Site "Rio de Janeiro"]
[Date "2011.07.17"]
[Round "5"]
[White "Katz, David James"]
[Black "Sacco, Bruno Torres"]
[Result "0-1"]
[ECO "A17"]
[PlyCount "46"]
[EventDate "2011.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. g3 d5 4. Bg2 c6 5. d3 Nbd7 6. Bg5 Qa5 7. Bxf6 Nxf6 8. Qa4 Qxa4 9. Nxa4 Bb4+ 10. Nc3 dxc4 11. dxc4 e5 12. e3 Be6 13. c5 Bxc5 14. Nge2 Rd8 15. 0-0 Rd2 16. b4 Bxb4 17. Rfb1 a5 18. a3 Bxc3 19. Rxb7 0-0 20. Nc1 Bc4 21. Nb3 Rb2 22. Nxa5 Rxb7 23. Nxb7 Bxa1 0-1

[Event "Rio de Janeiro-ch op"]
[Site "Rio de Janeiro"]
[Date "2011.07.16"]
[Round "4"]
[White "Giese, Ellen Cristine"]
[Black "Katz, David James"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1860"]
[PlyCount "71"]
[EventDate "2011.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. d4 d5 5. e5 f6 6. Bb5 cxd4 7. exf6 Nxf6 8. Nxd4 Bd7 9. Nxc6 Bxc6 10. Bxc6+ bxc6 11. Bg5 Bc5 12. Qe2 0-0 13. Qxe6+ Kh8 14. 0-0 h6 15. Bh4 g5 16. Bg3 Ne4 17. Qxh6+ Kg8 18. Qg6+ Kh8 19. Be5+ Nf6 20. Qh6+ Kg8 21. Qxg5+ Kf7 22. Bxf6 Qxf6 23. Qxf6+ Kxf6 24. Nd2 Rh8 25. Rae1 Rh7 26. Re2 Bd6 27. Nf3 Bxh2+ 28. Nxh2 Rah8 29. Ng4+ Kg5 30. f3 Kf4 31. Kf2 Rh1 32. Rxh1 Rxh1 33. g3+ Kf5 34. Kg2 Ra1 35. a3 c5 36. Re5+ 1-0

[Event "Rio de Janeiro-ch op"]
[Site "Rio de Janeiro"]
[Date "2011.07.16"]
[Round "3"]
[White "Sanchez Martinez, Miguel Angel"]
[Black "Katz, David James"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "1751"]
[PlyCount "49"]
[EventDate "2011.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nf3 b6 4. Nc3 Bb7 5. e3 d6 6. Bd3 c5 7. Bxf5 g6 8. Be6 Bg7 9. d5 Bc8 10. Ng5 Bxe6 11. Nxe6 Qd7 12. Nxg7+ Kf7 13. Ne6 h6 14. Nb5 Na6 15. a3 Rag8 16. Qa4 Qc8 17. Nxa7 b5 18. Qxb5 Nc7 19. Qc6 Qb8 20. Qxc7 Qxc7 21. Nxc7 Rd8 22. Ne6 Rd7 23. Nc6 Rc8 24. Bd2 Rxc6 25. dxc6 1-0

[Event "Rio de Janeiro-ch op"]
[Site "Rio de Janeiro"]
[Date "2011.07.15"]
[Round "2"]
[White "Katz, David James"]
[Black "Coelho, Tatiane Cristina"]
[Result "0-1"]
[ECO "A15"]
[BlackElo "1803"]
[PlyCount "23"]
[EventDate "2011.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 b6 3. g3 Bb7 4. Nf3 e5 5. Bg2 Bb4 6. 0-0 Bxc3 7. dxc3 Qe7 8. Bh3 0-0 9. Bg5 h6 10. Bxf6 Qxf6 11. Qc2 d6 12. Rad1 0-1

[Event "Rio de Janeiro-ch op"]
[Site "Rio de Janeiro"]
[Date "2011.07.15"]
[Round "1"]
[White "Katz, David James"]
[Black "Dos Santos, Braulio"]
[Result "0-1"]
[ECO "A25"]
[BlackElo "2016"]
[PlyCount "38"]
[EventDate "2011.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. f4 exf4 6. gxf4 Ne4 7. Nxe4 fxe4 8. Bxe4 Qh4+ 9. Kf1 Qxf4+ 10. Bf3 Bc5 11. d3 Qh4 12. e3 0-0 13. Ke2 d6 14. Bd5+ Kh8 15. Nf3 Bg4 16. h3 Qg3 17. hxg4 Qg2+ 18. Ke1 Bb4+ 19. Nd2 Qf2# 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2001.02.17"]
[Round "2"]
[White "Bonin, Jay R"]
[Black "Katz, David James"]
[Result "1-0"]
[ECO "A71"]
[WhiteElo "2374"]
[PlyCount "54"]
[EventDate "2001.02.17"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Bg5 Bg7 8. Nd2 0-0 9. e4 Na6 10. Be2 Nc7 11. a4 a6 12. 0-0 Rb8 13. f4 Qd7 14. Bxf6 Bxf6 15. e5 dxe5 16. Nde4 Bg7 17. d6 Ne8 18. Nd5 Qd8 19. Ne7+ Kh8 20. Nxc8 Rxc8 21. d7 Rc7 22. dxe8Q Qxe8 23. f5 Qc8 24. Qc2 c4 25. Ra3 b5 26. Rh3 Rc5 27. Ng5 h6 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2001.02.17"]
[Round "1"]
[White "Kaufman, Larry C"]
[Black "Katz, David James"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "2397"]
[PlyCount "120"]
[EventDate "2001.02.17"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Be7 7. Qf3 0-0 8. Be3 N8d7 9. 0-0-0 Bg5 10. Bd3 Bxe3+ 11. fxe3 Nf6 12. Nge2 Be6 13. b3 d5 14. c5 Nc8 15. Kb1 b6 16. Rc1 bxc5 17. dxc5 c6 18. Nd4 Ne7 19. Rhf1 Qc7 20. Nce2 Bg4 21. Qg3 Qxg3 22. Nxg3 Nd7 23. Kb2 Rab8 24. Bb1 Ne5 25. Kc3 Bc8 26. h3 g6 27. Rf2 f5 28. Nge2 Re8 29. Nf4 Kg7 30. Bd3 Ng8 31. Bb1 Nf6 32. Re2 Kf7 33. Ree1 a5 34. a3 Ba6 35. Kd2 Rec8 36. Rc3 Rc7 37. Bc2 Re8 38. Nf3 Rce7 39. Nxe5+ Rxe5 40. Rg1 g5 41. Ne2 Bxe2 42. Kxe2 d4 43. Rd3 Rxe3+ 44. Rxe3 Rxe3+ 45. Kd2 Ke6 46. Rf1 f4 47. h4 h6 48. hxg5 hxg5 49. Rh1 Rg3 50. Rh6 Ke5 51. Bd3 Rxg2+ 52. Ke1 f3 53. b4 axb4 54. axb4 Rg1+ 55. Kd2 f2 56. b5 Ne4+ 57. Kc2 Nxc5 58. b6 Nxd3 59. b7 Nb4+ 60. Kd2 Na6 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1999.02.13"]
[Round "1"]
[White "Katz, David James"]
[Black "Figler, Ilya"]
[Result "1-0"]
[ECO "B01"]
[BlackElo "2384"]
[PlyCount "107"]
[EventDate "1999.02.??"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. Nge2 c5 6. 0-0 Nc6 7. d4 Bg4 8. dxc5 Rd8 9. Qe1 e6 10. Ng3 Bxc5 11. h3 Bh5 12. Nxh5 Nxh5 13. Ne4 Bb4 14. c3 Be7 15. Qe2 0-0 16. b4 Qf5 17. f4 Qg6 18. Kh2 Nf6 19. Bd3 Rxd3 20. f5 exf5 21. Nxf6+ Qxf6 22. Qxd3 Bxb4 23. Rxf5 Qxc3 24. Qxc3 Bxc3 25. Rb1 b6 26. Bf4 Rd8 27. Bc7 Rd3 28. Rc1 Ne7 29. Rb5 f6 30. Bb8 Bd2 31. Rc4 Rd7 32. Kg3 Be1+ 33. Kf3 Rd2 34. Rc1 Bh4 35. g3 Bg5 36. Rc7 f5 37. Re5 Kf8 38. Rxa7 Bf6 39. Re6 Kf7 40. Rd6 Bd4 41. g4 Rf2+ 42. Kg3 f4+ 43. Kh4 Bc5 44. Rc6 Rd2 45. Bxf4 Rd3 46. g5 Kg8 47. Rcc7 Ng6+ 48. Kg4 Bf8 49. Rc4 h5+ 50. gxh6 gxh6 51. h4 Rd5 52. h5 Ne7 53. Rcc7 Nf5 54. Rd7 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1998.??.??"]
[Round "3"]
[White "Muth, Gabriel"]
[Black "Katz, David James"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "101"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 e5 3. Nf3 d6 4. Bc4 Be7 5. 0-0 0-0 6. d3 Nc6 7. Nd5 Nxd5 8. Bxd5 Bg4 9. Bxc6 bxc6 10. c3 Qd7 11. h3 Bh5 12. Nxe5 dxe5 13. Qxh5 Qxd3 14. Qxe5 Bd6 15. Qd4 Qb5 16. b3 Be5 17. Qe3 Bh2+ 18. Kxh2 Qxf1 19. c4 Qd1 20. Qg3 Qd4 21. Rb1 Qxe4 22. Rb2 Rfe8 23. Qxc7 Re7 24. Qg3 Rd7 25. Be3 Re8 26. Re2 f5 27. Rd2 Rxd2 28. Bxd2 Qe5 29. Qxe5 Rxe5 30. Be3 Kf7 31. Kg3 h6 32. b4 a6 33. Kf4 Ke6 34. a3 Re4+ 35. Kf3 Rxc4 36. Bd2 Rc2 37. Ke3 Ra2 38. Bc1 g5 39. g3 Kd5 40. f4 g4 41. hxg4 fxg4 42. f5 Ke5 43. f6 Kxf6 44. Kf4 h5 45. Ke4 Ke6 46. Kf4 Rf2+ 47. Kg5 Rf5+ 48. Kg6 Ke5 49. Bg5 Ke4 50. Kxh5 Kf3 51. Kh6 0-1

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "3"]
[White "Buttigieg, J."]
[Black "Katz, David James"]
[Result "0-1"]
[ECO "B31"]
[PlyCount "82"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. Bb5 Bg7 5. 0-0 d6 6. d4 cxd4 7. Nxd4 Bd7 8. Nxc6 bxc6 9. Bc4 Nf6 10. Bb3 0-0 11. h3 Qc8 12. Qf3 c5 13. Nd5 Nxd5 14. Bxd5 Rb8 15. Rb1 e6 16. Bc4 Bc6 17. Rd1 Rb4 18. Bd3 Qb7 19. c4 f5 20. Qg3 fxe4 21. Be2 Be5 22. Qh4 d5 23. Bg4 Qf7 24. cxd5 exd5 25. a3 Rb3 26. Bh6 Rfb8 27. Qg5 Bxb2 28. Qf4 Qxf4 29. Bxf4 Kf7 30. Bxb8 Rxb8 31. Rd2 Be5 32. Rxb8 Bxb8 33. Rb2 Be5 34. Rb3 c4 35. Rb1 d4 36. Rb4 c3 37. Rc4 Be8 38. Bd1 Ke6 39. Bb3 Kd6 40. Rc8 Bd7 41. Rf8 d3 0-1

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "8"]
[White "Duong, Thanh Nha"]
[Black "Katz, David James"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2285"]
[PlyCount "113"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bd3 Bg7 8. Nge2 0-0 9. 0-0 b6 10. Bg5 Ba6 11. f4 Qc8 12. Bxa6 Qxa6 13. Qe1 h6 14. Bxf6 Bxf6 15. Qg3 Nd7 16. Qh3 Rad8 17. Qxh6 b5 18. a3 Qb6 19. f5 Ne5 20. fxg6 fxg6 21. Nf4 c4+ 22. Kh1 Rf7 23. Nxg6 Ng4 24. Qf4 Nxh2 25. Ne7+ Rxe7 26. Qxf6 Nxf1 27. Qxe7 Rf8 28. Qg5+ Kh7 29. e5 Qd4 30. Rd1 Qxe5 31. Qxe5 dxe5 32. d6 Ne3 33. Re1 Ng4 34. Kg1 Kg6 35. Nxb5 a6 36. Nc7 Rd8 37. Rd1 Ne3 38. Rd2 c3 39. bxc3 Nc4 40. Rd5 Kf5 41. Nxa6 Ke4 42. Rd1 Rxd6 43. Nc5+ Ke3 44. Rxd6 Nxd6 45. a4 Nc4 46. Kh2 Na5 47. g4 Kf4 48. Kh3 e4 49. Kh4 e3 50. Nd3+ Kf3 51. g5 Ke2 52. Ne5 Kf1 53. g6 Nc6 54. Nd3 Ke2 55. Nf4+ Kf3 56. Kg5 Ne7 57. g7 1-0

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "10"]
[White "Katz, David James"]
[Black "Day, Lawrence A"]
[Result "1-0"]
[ECO "C44"]
[BlackElo "2380"]
[PlyCount "69"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 g6 5. Bg5 f6 6. Bf4 Qe7 7. 0-0 Ne5 8. Bxg8 Rxg8 9. Nxd4 d6 10. Nc3 c6 11. h3 Bd7 12. Qe2 Kf7 13. Rad1 Kg7 14. Rd2 Kh8 15. Nd1 Re8 16. Ne3 Qf7 17. b3 f5 18. exf5 gxf5 19. Qd1 Ng6 20. Bxd6 f4 21. Bxf8 Rexf8 22. Ng4 Rg7 23. Nf3 Be6 24. Re1 Bd5 25. Ng5 Qf5 26. Rxd5 cxd5 27. Ne6 Re8 28. Nxg7 Rxe1+ 29. Qxe1 Kxg7 30. Qc3+ Kf8 31. Qf6+ Qxf6 32. Nxf6 Ke7 33. Nxh7 Ke6 34. Kf1 f3 35. Ng5+ 1-0

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "9"]
[White "Katz, David James"]
[Black "Glinert, Stephen"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "91"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 e6 3. d3 d5 4. Nbd2 Nf6 5. g3 dxe4 6. dxe4 e5 7. Bg2 Bg4 8. 0-0 Bc5 9. c3 0-0 10. Qc2 a6 11. Nc4 Qe7 12. Bg5 Qe6 13. b3 Bh5 14. Be3 Bxf3 15. Bxc5 Bxg2 16. Kxg2 Rfd8 17. Rad1 Rxd1 18. Rxd1 Ne7 19. f3 Ng6 20. Ne3 Ne7 21. Rd3 h6 22. Qd2 Nc6 23. Nf5 Kh7 24. Ba3 Nh5 25. Rd7 Re8 26. Rxc7 Rd8 27. Qe3 Qg6 28. Kf2 Qe6 29. Rxb7 Rc8 30. Kg2 Qg6 31. Rd7 Nf4+ 32. Kf1 Ne6 33. Rd6 Qh5 34. Kg2 Ncd4 35. h4 Nxf5 36. exf5 Nc7 37. Qd3 f6 38. Bc1 Nb5 39. g4 Qxh4 40. Rd8 Rxc3 41. Qd5 Rc2+ 42. Bd2 Rxd2+ 43. Qxd2 Nd4 44. Rc8 h5 45. Qd1 Qg5 46. Qc1 1-0

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "2"]
[White "Katz, David James"]
[Black "Nickoloff, Bryon"]
[Result "1/2-1/2"]
[ECO "A08"]
[BlackElo "2420"]
[PlyCount "46"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 d5 5. Nbd2 g6 6. Bg2 Bg7 7. 0-0 Nge7 8. Re1 b6 9. c3 a5 10. e5 Ba6 11. Nf1 h6 12. h4 Qc7 13. Qe2 g5 14. hxg5 Ng6 15. gxh6 Bxe5 16. Nxe5 Qxe5 17. Ne3 0-0-0 18. Rb1 f5 19. b4 axb4 20. cxb4 Nxb4 21. Rxb4 cxb4 22. Bb2 Qd6 23. Bxh8 Rxh8 1/2-1/2

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "4"]
[White "Katz, David James"]
[Black "Starr, Sasha"]
[Result "1/2-1/2"]
[ECO "A05"]
[PlyCount "99"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. g3 Nf6 4. d3 Nc6 5. Bg2 Be7 6. 0-0 0-0 7. Nbd2 d5 8. exd5 Nxd5 9. Re1 f6 10. d4 exd4 11. Nb3 Bb4 12. Re2 Bg4 13. Nbxd4 Nc3 14. bxc3 Bxc3 15. Rd2 Nxd4 16. Rxd4 Bxf3 17. Rxd8 Bxd1 18. Rxd1 Bxa1 19. Ba3 Be5 20. Bxf8 Kxf8 21. Bxb7 Rb8 22. Bd5 a5 23. Bb3 Ke7 24. f4 Bd6 25. Kf2 h5 26. Re1+ Kd7 27. h4 Rb4 28. c3 Rb6 29. Bf7 g5 30. Bxh5 gxh4 31. gxh4 Bxf4 32. Re2 Be5 33. c4 Rd6 34. Bf7 Rd4 35. h5 Rh4 36. c5 Kc6 37. Kf3 Rf4+ 38. Ke3 f5 39. Rf2 Rxf2 40. Kxf2 Kxc5 41. Ke3 Kd6 42. h6 Ke7 43. Bc4 Kf6 44. h7 Kg5 45. Kf3 c5 46. Be6 Bg7 47. Ke3 Kg4 48. Kd3 Kf4 49. Kc4 Bd4 50. Bxf5 1/2-1/2

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "5"]
[White "Manalo, Pepin"]
[Black "Katz, David James"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "63"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Bxf6 gxf6 9. Na3 b5 10. Nd5 f5 11. exf5 Bxf5 12. Ne3 Be6 13. c3 Qb6 14. Nac2 d5 15. Nxd5 Bxd5 16. Qxd5 Rd8 17. Qf3 Bh6 18. Bd3 Rd6 19. 0-0 Rg8 20. Bxh7 Rg7 21. Be4 Ne7 22. Rad1 Bf4 23. Rxd6 Qxd6 24. g3 Qh6 25. Rd1 f5 26. Bd5 e4 27. Bxe4 fxe4 28. Qxe4 Bc7 29. Ne3 Kf8 30. Qa8+ Kf7 31. Rd7 Bxg3 32. Rxe7+ 1-0

[Event "Val Maubuee op2"]
[Site "Val Maubuee"]
[Date "1990.??.??"]
[Round "?"]
[White "Champ, C."]
[Black "Katz, David James"]
[Result "1/2-1/2"]
[ECO "B15"]
[PlyCount "71"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Bc4 Bd6 7. Nf3 0-0 8. 0-0 Nd7 9. c3 Re8 10. Qd3 Nf8 11. Nh4 Qc7 12. f4 Bg4 13. Qg3 Qd7 14. Qf2 Be6 15. Bd3 f5 16. Qc2 g6 17. a3 Rad8 18. Bd2 c5 19. Nf3 f6 20. Rae1 c4 21. Be2 Bd5 22. Qc1 Re7 23. Bd1 Ne6 24. Be3 Rde8 25. Qd2 Qc7 26. g3 b5 27. Qf2 a5 28. Bc1 b4 29. axb4 axb4 30. Bd2 Qb7 31. Nh4 Ra8 32. Bf3 Ra2 33. Bxd5 Qxd5 34. Rb1 Qb7 35. Qf3 Qxf3 36. Nxf3 1/2-1/2

[Event "US Open-87"]
[Site "Somerset"]
[Date "1986.??.??"]
[Round "1"]
[White "Katz, David James"]
[Black "Levin, David"]
[Result "0-1"]
[ECO "B03"]
[BlackElo "2305"]
[PlyCount "36"]
[EventDate "1986.08.03"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 Nb6 5. Bb3 Bf5 6. Qf3 Qc8 7. g4 Be6 8. Bxe6 Qxe6 9. Bf4 Nc6 10. Ne2 dxe5 11. dxe5 0-0-0 12. Nbc3 g6 13. Qg3 Bg7 14. Ne4 Nxe5 15. 0-0 Nd5 16. Nd4 Nxf4 17. Nxe6 Ne2+ 18. Kg2 Nxg3 0-1

