[Event "US Amateur West-ch"]
[Site "Palo Verde"]
[Date "2009.05.23"]
[Round "1"]
[White "Katzel, Dan"]
[Black "Zhang, Kevin"]
[Result "0-1"]
[ECO "B17"]
[WhiteElo "1780"]
[BlackElo "2145"]
[PlyCount "84"]
[EventDate "2009.05.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bd3 Bg4 8. c3 Qd5 9. Be2 e6 10. 0-0 Bd6 11. Re1 0-0 12. Ne5 Bxe2 13. Qxe2 h6 14. Bd2 c5 15. dxc5 Bxe5 16. Bxh6 Bxh2+ 17. Kxh2 gxh6 18. b4 Qh5+ 19. Qxh5 Nxh5 20. g3 Rad8 21. Rad1 Nf6 22. c4 Rxd1 23. Rxd1 Rc8 24. Rd4 Kf8 25. Kg2 Ke7 26. a4 Rd8 27. Rh4 h5 28. a5 e5 29. Rh1 Rd4 30. Rc1 Ne4 31. a6 bxa6 32. Ra1 Rxc4 33. Rxa6 Rxb4 34. Rxa7+ Ke6 35. c6 Rc4 36. c7 Nd6 37. Ra5 Rxc7 38. f4 f6 39. fxe5 fxe5 40. Ra2 Rg7 41. Kh2 Ne4 42. Ra6+ Kf5 0-1

[Event "US Amateur West-ch"]
[Site "Palo Verde"]
[Date "2003.05.26"]
[Round "5"]
[White "Hao, David"]
[Black "Katzel, Dan"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "1492"]
[BlackElo "1782"]
[PlyCount "89"]
[EventDate "2003.05.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 e5 3. d3 Nf6 4. Bg5 Be7 5. c4 c6 6. Nc3 d4 7. Bxf6 Bxf6 8. Ne4 Qa5+ 9. Qd2 Qxd2+ 10. Nxd2 Bf5 11. b4 0-0 12. b5 a6 13. bxc6 Nxc6 14. Rb1 Rab8 15. Ngf3 Rfe8 16. 0-0 g5 17. Ne1 h5 18. Ne4 Be7 19. Nc2 Kg7 20. a3 Be6 21. Nb4 Nxb4 22. axb4 f5 23. Nc5 Bc8 24. Bd5 Bd6 25. Na4 b5 26. c5 Bc7 27. Nb2 f4 28. Nd1 h4 29. Kg2 hxg3 30. fxg3 Rh8 31. Nf2 Bb7 32. Bxb7 Rxb7 33. Ne4 Kg6 34. g4 Rh4 35. h3 Ra7 36. Ra1 Rh8 37. Ra2 Rha8 38. Rfa1 a5 39. Ra3 a4 40. Rh1 Rh8 41. Nf2 Bb8 42. Ne4 Rf7 43. Rf1 Rh4 44. Rf3 Ra7 45. Kh2 1/2-1/2

[Event "US Amateur West-ch"]
[Site "Palo Verde"]
[Date "2003.05.26"]
[Round "6"]
[White "Katzel, Dan"]
[Black "Steinberger, Todd"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1782"]
[PlyCount "105"]
[EventDate "2003.05.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c6 4. e3 Bf5 5. Bd3 Bxd3 6. Qxd3 Nbd7 7. h3 e6 8. Nbd2 Be7 9. 0-0 0-0 10. c4 Rc8 11. Rac1 a6 12. Rc2 Re8 13. Rfc1 Bb4 14. a3 Ba5 15. b4 Bc7 16. Bxc7 Qxc7 17. e4 dxe4 18. Nxe4 Nxe4 19. Qxe4 Nf6 20. Qe5 Qd7 21. g4 h6 22. g5 hxg5 23. Nxg5 Rcd8 24. Nf3 Qd6 25. Qxd6 Rxd6 26. Re2 Red8 27. Kh2 b6 28. Re5 Ne8 29. Rg5 g6 30. Rcg1 Nf6 31. h4 Kf8 32. Re5 Nh5 33. c5 bxc5 34. bxc5 R6d7 35. Rb1 Ra7 36. Rb6 Rc8 37. Re1 f6 38. Rxe6 Kf7 39. Rexc6 Rxc6 40. Rxc6 a5 41. Rb6 a4 42. c6 Rc7 43. Rb7 Re7 44. c7 Rxc7 45. Rxc7+ Ke6 46. Rc4 Kd5 47. Rxa4 Ke4 48. Ne1 Kd5 49. Rb4 Nf4 50. a4 Ne6 51. Nc2 Nc7 52. Rb6 Ne6 53. Ne3+ 1-0

[Event "US Amateur West-ch"]
[Site "Palo Verde"]
[Date "2003.05.25"]
[Round "4"]
[White "Katzel, Dan"]
[Black "Olesak, Michael"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1782"]
[BlackElo "1637"]
[PlyCount "103"]
[EventDate "2003.05.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 e6 5. Bd3 Bd6 6. Bxd6 Qxd6 7. Na3 Qb4+ 8. c3 Qb6 9. Rb1 Bxd3 10. Qxd3 0-0 11. 0-0 Nbd7 12. c4 c6 13. b4 a6 14. Rb3 Qc7 15. Rc1 Qd6 16. Rcb1 b5 17. c5 Qc7 18. Nc2 Rfe8 19. Rd1 Nf8 20. Ne5 N6d7 21. f4 f5 22. Kh1 Nf6 23. Qe2 Ng6 24. Rg1 Kh8 25. g3 Ne7 26. h4 h5 27. Nf7+ Kg8 28. Ng5 Ng6 29. Ra1 Nf8 30. a4 Qb7 31. axb5 axb5 32. Rba3 Rxa3 33. Rxa3 Ra8 34. Qd3 Ne4 35. Nxe4 dxe4 36. Qb3 Kf7 37. Qa2 Rxa3 38. Qxa3 Nd7 39. Na1 Nf6 40. Kg2 Ke7 41. Nb3 Nd5 42. Na5 Qa8 43. Kf2 Kd7 44. Qb2 Qe8 45. Qa3 Kc7 46. Qb2 Qg6 47. Nxc6 Kxc6 48. Qa3 Qe8 49. Qa6+ Kc7 50. Qa7+ Kc6 51. Qa6+ Kc7 52. Qa7+ 1/2-1/2

[Event "US Amateur West-ch"]
[Site "Palo Verde"]
[Date "2003.05.25"]
[Round "3"]
[White "Thakur, Ashu"]
[Black "Katzel, Dan"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "1782"]
[PlyCount "42"]
[EventDate "2003.05.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 e6 4. e3 Bd6 5. Bxd6 Qxd6 6. c4 b6 7. Qb3 0-0 8. Nc3 c6 9. a4 Ba6 10. a5 Bxc4 11. Bxc4 dxc4 12. Qxc4 Nbd7 13. 0-0 Rfb8 14. Rfb1 bxa5 15. Rxa5 Nb6 16. Qc5 Qxc5 17. Rxc5 Rc8 18. Ne5 Nfd7 19. Nxd7 Nxd7 20. Ra5 c5 21. dxc5 Nxc5 1/2-1/2

[Event "US Amateur West-ch"]
[Site "Palo Verde"]
[Date "2003.05.24"]
[Round "2"]
[White "Katzel, Dan"]
[Black "Davila Liceaga, Josue Hiram"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1782"]
[PlyCount "108"]
[EventDate "2003.05.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 Bf5 4. e3 e6 5. Bd3 Bxd3 6. Qxd3 Nbd7 7. Nbd2 Bd6 8. Bxd6 cxd6 9. 0-0 0-0 10. Rac1 Rc8 11. Qa3 Qc7 12. c4 Qb8 13. cxd5 exd5 14. Rfd1 Rxc1 15. Rxc1 Rc8 16. b3 Rxc1+ 17. Qxc1 Nb6 18. Qc2 Qc8 19. Qxc8+ Nxc8 20. Kf1 Kf8 21. Ke2 Ne7 22. Kd3 Nc6 23. a3 Ke7 24. b4 a6 25. h3 h6 26. Nh4 Ke6 27. g4 g6 28. f4 Ne7 29. Ng2 Nc6 30. Ne1 Ne7 31. Nef3 Nc6 32. g5 Ng8 33. e4 dxe4+ 34. Nxe4 h5 35. Nh4 Nge7 36. Nc3 Nd5 37. Nxd5 Kxd5 38. f5 Nxd4 39. fxg6 fxg6 40. Nxg6 Nf3 41. Nf4+ Ke5 42. Nxh5 Nxg5 43. h4 Nf3 44. Ng3 Nxh4 45. Ne2 Nf5 46. Nc3 Ne7 47. Ne4 Nc6 48. Nd2 d5 49. Nb3 b6 50. Nd2 d4 51. Nc4+ Kd5 52. Nxb6+ Kd6 53. Ke4 Nxb4 54. axb4 Kc6 1/2-1/2

[Event "US Amateur West-ch"]
[Site "Palo Verde"]
[Date "2003.05.24"]
[Round "1"]
[White "Wadsworth, Neil"]
[Black "Katzel, Dan"]
[Result "0-1"]
[ECO "E24"]
[BlackElo "1782"]
[PlyCount "76"]
[EventDate "2003.05.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d5 6. Bg5 Nbd7 7. Nf3 c6 8. Qc2 Qa5 9. Nd2 Ne4 10. Nxe4 dxe4 11. Bd2 Nf6 12. g3 Qf5 13. Bg2 0-0 14. 0-0 Bd7 15. Bf4 c5 16. Bd6 Rfc8 17. f3 exf3 18. Qxf5 exf5 19. Bxf3 Ne4 20. Bxe4 fxe4 21. Bxc5 b6 22. Bd6 Rxc4 23. Rac1 Rac8 24. Rf4 f5 25. g4 g5 26. Rff1 f4 27. h3 Rxc3 28. Bxf4 gxf4 29. Rxc3 Rxc3 30. Rxf4 Rxh3 31. Rxe4 Rg3+ 32. Kf2 Rxg4 33. Kf3 Rxe4 34. Kxe4 Kf7 35. Ke5 Ke7 36. e4 b5 37. d5 a5 38. Kd4 h5 0-1

[Event "US Open-92"]
[Site "Los Angeles"]
[Date "1991.??.??"]
[Round "?"]
[White "Katzel, Dan"]
[Black "Jestadt, Jesse"]
[Result "1/2-1/2"]
[ECO "D30"]
[PlyCount "25"]
[EventDate "1991.07.28"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 d5 5. Bd3 Nc6 6. 0-0 Qc7 7. cxd5 exd5 8. Nc3 a6 9. dxc5 Bxc5 10. e4 dxe4 11. Nxe4 Nxe4 12. Bxe4 0-0 13. Bxh7+ 1/2-1/2

[Event "US Open-92"]
[Site "Los Angeles"]
[Date "1991.??.??"]
[Round "?"]
[White "Marchand, Erich Watkinson"]
[Black "Katzel, Dan"]
[Result "1/2-1/2"]
[ECO "D70"]
[PlyCount "50"]
[EventDate "1991.07.28"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 d5 3. cxd5 Nxd5 4. d4 g6 5. e4 Nb6 6. Nc3 Bg7 7. Be3 0-0 8. h3 N6d7 9. Bc4 a6 10. a4 e5 11. 0-0 exd4 12. Bxd4 c5 13. Bxg7 Kxg7 14. Qd2 Ne5 15. Qe2 Nbc6 16. Nxe5 Nxe5 17. Rad1 Qa5 18. Bd5 Rb8 19. f4 Nc6 20. Bxc6 bxc6 21. f5 Qb6 22. f6+ Kh8 23. Qd2 Be6 24. Qh6 Rg8 25. Rd2 g5 1/2-1/2

[Event "Webb op"]
[Site "Webb"]
[Date "1989.??.??"]
[Round "5"]
[White "Katzel, Dan"]
[Black "Bursley, J."]
[Result "0-1"]
[ECO "E91"]
[PlyCount "92"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 d6 4. Nc3 Bg7 5. e4 0-0 6. Be2 c5 7. d5 e6 8. 0-0 exd5 9. exd5 Re8 10. h3 a6 11. Bf4 Qc7 12. Qd2 Nbd7 13. Bh6 Bh8 14. Rfe1 Ne5 15. Nxe5 Rxe5 16. Bf4 Re8 17. Bd3 Bd7 18. a4 Rab8 19. Rxe8+ Rxe8 20. Re1 Rxe1+ 21. Qxe1 Nh5 22. Bd2 Be5 23. Qc1 Qc8 24. Be2 Ng7 25. Bf4 Qe8 26. Bxe5 Qxe5 27. Qe3 Qxe3 28. fxe3 f5 29. b3 Kf7 30. Kf2 Kf6 31. g3 Ke5 32. h4 Ne8 33. Bd3 Nf6 34. Kf3 h6 35. Bc2 g5 36. hxg5 hxg5 37. e4 fxe4+ 38. Nxe4 Bf5 39. Nxg5 Bxc2 40. Nf7+ Kd4 41. Nxd6 Bxb3 42. Nxb7 Bxc4 43. Nd6 Bxd5+ 44. Kf4 c4 45. Nf5+ Kd3 46. Ke5 Be4 0-1

[Event "Webb op"]
[Site "Webb"]
[Date "1989.??.??"]
[Round "1"]
[White "Katzel, Dan"]
[Black "Guthrie, Matt"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "108"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 g6 2. e4 d6 3. Nc3 Nf6 4. Nf3 Bg7 5. Bc4 0-0 6. 0-0 Nxe4 7. Bxf7+ Rxf7 8. Nxe4 Nc6 9. h3 h6 10. d5 Ne5 11. Nxe5 dxe5 12. Be3 Bf5 13. Nc5 b6 14. Nb3 e6 15. dxe6 Bxe6 16. Qxd8+ Rxd8 17. Rfd1 Rfd7 18. Rxd7 Rxd7 19. Nd2 Bf5 20. Rc1 e4 21. c3 g5 22. g4 Bg6 23. Kf1 Kf7 24. Ke2 Ke6 25. Rd1 c5 26. Nb3 Rd3 27. Rd2 Be5 28. Nc1 Rxd2+ 29. Kxd2 Bf4 30. Ne2 Ke5 31. Ng1 h5 32. Ne2 hxg4 33. hxg4 Bf7 34. b3 Be6 35. b4 Bxa2 36. bxc5 Bxe3+ 37. Kxe3 bxc5 38. f4+ exf3 39. Kxf3 Bc4 40. Ng1 a5 41. Ke3 a4 42. Nf3+ Kf6 43. Kd2 Be6 44. Nh2 Ke5 45. Nf3+ Kf4 46. Ne1 Kxg4 47. Nd3 c4 48. Nc5 a3 49. Kc1 Bf5 50. Nb7 Bd3 51. Nd6 Kf4 52. Nb5 g4 53. Nd4 g3 54. Ne6+ Kg4 0-1

[Event "Webb op"]
[Site "Webb"]
[Date "1989.??.??"]
[Round "3"]
[White "Katzel, Dan"]
[Black "Yetman Iii, Ed"]
[Result "1/2-1/2"]
[ECO "C07"]
[PlyCount "82"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Nxd4 Nf6 6. e5 Nfd7 7. N2f3 Nc6 8. Nxc6 bxc6 9. Be2 Be7 10. 0-0 0-0 11. Bf4 f6 12. exf6 Nxf6 13. Ne5 Qb6 14. Rb1 Ne4 15. Be3 c5 16. c3 Bd6 17. Nf3 Qc7 18. Bd3 Bb7 19. h3 Nf6 20. Ng5 Bc8 21. Qc2 h6 22. Nh7 Nxh7 23. Bxh7+ Kh8 24. Bg6 e5 25. Rbd1 Bb7 26. f3 Rf6 27. Bf2 d4 28. Bh4 Rf4 29. Bg3 Rff8 30. Be4 Rab8 31. Bxb7 Qxb7 32. Rd2 Qd5 33. b3 Rbc8 34. Re1 Qe6 35. Rde2 c4 36. cxd4 cxb3 37. Qxb3 Qxb3 38. axb3 Bb4 39. Rd1 exd4 40. Bf2 Rc3 41. Bxd4 Rxb3 1/2-1/2

[Event "Webb op"]
[Site "Webb"]
[Date "1989.??.??"]
[Round "4"]
[White "Radonich, Bud"]
[Black "Katzel, Dan"]
[Result "1/2-1/2"]
[ECO "A43"]
[PlyCount "88"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 c5 3. d5 exd5 4. exd5 d6 5. Nc3 Nf6 6. Nf3 Be7 7. Bd3 0-0 8. h3 a6 9. a4 Nbd7 10. 0-0 Nb6 11. a5 Nbd7 12. Re1 Re8 13. Bf4 b6 14. axb6 Nxb6 15. b3 Bb7 16. Bc4 Bf8 17. Qd3 h6 18. Rxe8 Qxe8 19. Re1 Qd7 20. Ra1 Nxc4 21. Qxc4 Qf5 22. Rd1 Qxc2 23. Ne1 Qf5 24. g4 Qg6 25. Ng2 Qh7 26. Ne3 g5 27. Bg3 Bc8 28. Kg2 Rb8 29. Na2 Qe4+ 30. Kg1 Qxc4 31. Nxc4 Ne4 32. Rd3 Nxg3 33. fxg3 Bd7 34. Rf3 Kg7 35. Nc1 Re8 36. Kf2 Be7 37. Ne2 Bb5 38. Re3 Kf8 39. Rf3 Bxc4 40. bxc4 Rb8 41. Ra3 Rb4 42. Rxa6 Rxc4 43. Ra8+ Kg7 44. Ke3 Bf6 1/2-1/2

[Event "Webb op"]
[Site "Webb"]
[Date "1989.??.??"]
[Round "2"]
[White "Shaked, Tal"]
[Black "Katzel, Dan"]
[Result "1/2-1/2"]
[ECO "C02"]
[PlyCount "30"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 c5 3. c3 d5 4. e5 Nc6 5. Nf3 cxd4 6. cxd4 Bb4+ 7. Bd2 Qb6 8. a3 Bxd2+ 9. Qxd2 Na5 10. Ra2 Ne7 11. b4 Bd7 12. Qg5 Rc8 13. Be2 Nf5 14. 0-0 Nc6 15. Bd3 Nfxd4 1/2-1/2

