[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "1"] [White "Fodor, John"] [Black "Veltmann, Alfred"] [Result "1-0"] [WhiteElo "2051"] [BlackElo "1921"] [ECO "D53"] [EventDate "1997.06.14"] [PlyCount "50"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Nbd7 5. Bg5 c6 6. e3 Be7 7. Bd3 h6 8. Bh4 dxc4 9. Bxc4 b5 10. Be2 a6 11. O-O Bb7 12. Qc2 Rc8 13. Rfd1 Qc7 14. Rac1 Nd5 15. Nxd5 exd5 16. Bxe7 Kxe7 17. e4 Qd6 18. e5 Qg6 19. Bd3 Qh5 20. b4 Rhf8 21. Re1 Kd8 22. a4 Qg4 23. axb5 axb5 24. Be2 Qe6 25. Bd3 Qe7 1-0

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "1"] [White "Hergott, Deen"] [Black "Brice, Ron"] [Result "1-0"] [WhiteElo "2555"] [BlackElo "2227"] [ECO "A44"] [EventDate "1997.06.14"] [PlyCount "77"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. d4 c5 2. d5 e5 3. e4 d6 4. Bb5+ Bd7 5. a4 Be7 6. Nf3 Nf6 7. Nc3 O-O 8. h3 Ne8 9. g4 a5 10. Bc4 Na6 11. Ra3 Nac7 12. Be3 b6 13. Kd2 h6 14. Kc1 Kh7 15. Qg1 g6 16. Kb1 Ng7 17. Qc1 g5 18. Qg1 f6 19. h4 Kg6 20. Nd2 Rh8 21. Nb5 Na6 22. Be2 Nc7 23. Rb3 Rh7 24. Nc3 Rb8 25. Nc4 Na8 26. Nb5 Bxb5 27. Rxb5 Qd7 28. Nxa5 Rc8 29. Nc4 Qa7 30. a5 bxa5 31. Rxa5 Qb7 32. Qh2 Nc7 33. hxg5 fxg5 34. Bd3 Nce8 35. f4 Nf6 36. Ra6 Nxg4 37. Qg1 Nxe3 38. Nxe5+ Kf6 39. Rxh6+ 1-0

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "1"] [White "Pacey, Kevin"] [Black "Leimanis, Eriks"] [Result "1/2-1/2"] [WhiteElo "2277"] [BlackElo "2026"] [ECO "C13"] [EventDate "1997.06.14"] [PlyCount "73"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. d4 Nf6 2. Nc3 d5 3. Bg5 e6 4. e4 dxe4 5. Nxe4 Be7 6. Bxf6 Bxf6 7. Nf3 O-O 8. Nxf6+ Qxf6 9. Bd3 Nd7 10. Qe2 c5 11. O-O-O cxd4 12. Nxd4 Nc5 13. Nf3 b6 14. Qe5 Qxe5 15. Nxe5 Bb7 16. f3 f6 17. Ng4 Rfd8 18. Bc4 Kf8 19. Ne3 Ba6 20. Bxa6 Nxa6 21. Rhe1 Rac8 22. a3 Nc5 23. Rxd8+ Rxd8 24. Nd1 e5 25. Ne3 Ne6 26. Rd1 Rxd1+ 27. Kxd1 Ke7 28. Kd2 Kd6 29. Kc3 g6 30. a4 Nc5 31. b3 f5 32. Kc4 Ne6 33. c3 Nc7 34. h4 h5 35. Kd3 Nd5 36. Nxd5 Kxd5 37. Ke3 1/2-1/2

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "1"] [White "Veltmann, Martin"] [Black "Kirby, Patrick"] [Result "1/2-1/2"] [WhiteElo "2141"] [BlackElo "1987"] [ECO "C00"] [EventDate "1997.06.14"] [PlyCount "118"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. c4 e6 2. e4 d5 3. cxd5 exd5 4. exd5 Qxd5 5. Nc3 Qd8 6. Bb5+ c6 7. Bc4 Nf6 8. Qb3 Qc7 9. Nf3 Bd6 10. O-O O-O 11. d4 Nbd7 12. Bg5 Be7 13. Rfe1 Nb6 14. Rac1 Nxc4 15. Qxc4 Be6 16. d5 Bc8 17. Ne4 Nxe4 18. Qxe4 Bd6 19. dxc6 bxc6 20. Qxc6 Qb8 21. Rcd1 Bb4 22. Re8 Qb7 23. Rxf8+ Bxf8 24. Ne5 Qxc6 25. Nxc6 Be6 26. b3 h6 27. Be3 a6 28. f3 Rc8 29. Nd4 Rd8 30. Rc1 Bd5 31. Rc7 Bd6 32. Ra7 Bc5 33. Rxa6 Bxd4 34. Bxd4 Bxb3 35. axb3 Rxd4 36. Kf2 Rd2+ 37. Kg3 g6 38. h4 h5 39. b4 Rb2 40. Rb6 Kf8 41. Rb7 Kg7 42. b5 Kf6 43. b6 Ke6 44. Rb8 Kf6 45. b7 Rb4 46. Kf2 Ke7 47. Ke3 Kf6 48. g4 Kg7 49. g5 Rb5 50. f4 Rb4 51. Kd3 Rb5 52. Ke4 Kh7 53. Kd4 Kg7 54. Kc4 Rb1 55. Kd5 Rb2 56. Kd6 Rb1 57. f5 gxf5 58. Ke5 Rb5+ 59. Kf4 Rb4+ 1/2-1/2

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "2"] [White "Gordon, David"] [Black "Pacey, Kevin"] [Result "1/2-1/2"] [WhiteElo "2141"] [BlackElo "2277"] [ECO "D36"] [EventDate "1997.06.14"] [PlyCount "82"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Qc2 Nbd7 8. Bd3 O-O 9. Nge2 Re8 10. O-O Nf8 11. Bxf6 Bxf6 12. b4 a6 13. Rfc1 Be7 14. Rab1 Bd6 15. Na4 Re6 16. g3 Rh6 17. Bf5 Qg5 18. Bxc8 Rxc8 19. Nc5 Rc7 20. f4 Qe7 21. Qd2 Bxc5 22. bxc5 Nd7 23. Nc3 Nf6 24. Re1 Ng4 25. Re2 Re6 26. Nd1 Qf6 27. Nf2 Qf5 28. Rb3 Nxf2 29. Rxf2 Re4 30. Qb2 Qc8 31. Qb1 Qe8 32. Re2 Rxd4 33. exd4 Qxe2 34. Rxb7 Rxb7 35. Qxb7 Qe1+ 36. Kg2 Qe4+ 37. Kh3 Qe6+ 38. Kg2 Qe2+ 39. Kh3 Qe6+ 40. Kg2 Qe4+ 41. Kh3 Qe6+ 1/2-1/2

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "2"] [White "Serdula, Jay"] [Black "Veltmann, Martin"] [Result "0-1"] [WhiteElo "1918"] [BlackElo "2141"] [ECO "C92"] [EventDate "1997.06.14"] [PlyCount "60"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 d6 8. c3 O-O 9. h3 Bb7 10. d4 h6 11. Nbd2 Re8 12. g4 Bf8 13. Kh2 exd4 14. cxd4 Nb4 15. Bxf7+ Kxf7 16. Qb3+ d5 17. Ne5+ Kg8 18. Ng6 Nc6 19. Nf3 Kh7 20. Nxf8+ Rxf8 21. e5 Ne4 22. a4 b4 23. Kg2 a5 24. Be3 Ne7 25. Rac1 Ng6 26. Qc2 Nh4+ 27. Nxh4 Qxh4 28. Rf1 Ba6 29. Qxc7 Bxf1+ 30. Rxf1 Rac8 0-1

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "2"] [White "Valdizon, Armando"] [Black "Hergott, Deen"] [Result "0-1"] [WhiteElo "2303"] [BlackElo "2555"] [ECO "A40"] [EventDate "1997.06.14"] [PlyCount "42"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 f5 6. e4 fxe4 7. f3 e5 8. Qc2 exf3 9. Nxf3 d6 10. Bd3 Ne7 11. O-O h6 12. Bxg6+ Kd7 13. Bh7 Qe8 14. Be3 Kc7 15. Nd2 Nd7 16. Rf2 b5 17. Raf1 bxc4 18. Nxc4 Bb7 19. Be4 Bxd5 20. Bxd5 Nxd5 21. Qg6 Qxg6 0-1

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "2"] [White "Veltmann, Alfred"] [Black "Tomalty, Alan"] [Result "0-1"] [WhiteElo "1921"] [BlackElo "1861"] [ECO "C07"] [EventDate "1997.06.14"] [PlyCount "50"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ndf3 Nc6 6. Ne2 cxd4 7. Nexd4 Bc5 8. Be3 Nf6 9. Nxc6 Bxe3 10. fxe3 Qxc6 11. Bd3 Qb6 12. Qc1 Ng4 13. Ke2 O-O 14. h3 Nf6 15. g4 Bd7 16. Rg1 Rac8 17. g5 Nd5 18. a3 Bb5 19. Qd2 Rfd8 20. Rg4 Rxc2 21. Qxc2 Qxe3+ 22. Kd1 Qxf3+ 23. Qe2 Ne3+ 24. Ke1 Qh1+ 25. Kf2 Nxg4+ 0-1

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "2"] [White "Yip, Michael"] [Black "Leger, Manon"] [Result "1-0"] [WhiteElo "2163"] [BlackElo "2101"] [ECO "A93"] [EventDate "1997.06.14"] [PlyCount "61"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. c4 f5 2. d4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 d5 6. O-O O-O 7. b3 Ne4 8. Bb2 Nd7 9. Nbd2 Ndf6 10. Qc2 Bd7 11. Ne5 c6 12. e3 Be8 13. f3 Nxd2 14. Qxd2 Qc7 15. c5 b6 16. b4 b5 17. Bc3 Bf7 18. a4 a6 19. Ra3 Nd7 20. Nd3 Bf6 21. f4 g5 22. Rfa1 Qb7 23. Qa2 Rab8 24. Qb2 Ra8 25. Bf1 Bh5 26. Qa2 Rab8 27. axb5 axb5 28. Ra7 Qc8 29. Qa6 Rd8 30. Qa5 Bf3 31. Rc7 1-0

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.14"] [Round "3"] [White "Hergott, Deen"] [Black "Awate, Avinash"] [Result "1/2-1/2"] [WhiteElo "2555"] [BlackElo "2363"] [ECO "D36"] [EventDate "1997.06.14"] [PlyCount "85"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 c6 8. Qc2 h6 9. Bh4 Nbd7 10. Nf3 Re8 11. O-O Ne4 12. Bxe7 Qxe7 13. Bxe4 dxe4 14. Nd2 Nf6 15. Rae1 Bf5 16. f4 Rad8 17. Qa4 a6 18. b4 Nd5 19. Nxd5 Rxd5 20. Rc1 Be6 21. Rc5 b6 22. Rc2 a5 23. Qxc6 Rc8 24. Qa4 Rxc2 25. Qxc2 Rh5 26. f5 Rxf5 27. Rxf5 Bxf5 28. bxa5 bxa5 29. Qc5 Qg5 30. Nf1 Be6 31. Qxg5 hxg5 32. a3 f5 33. Ng3 Kf7 34. Kf2 Kf6 35. Ne2 Bc4 36. Nc3 Bd3 37. g3 Ke6 38. h4 g4 39. Ke1 Kd6 40. Kd2 Bc4 41. Na4 Bb5 42. Nc3 Bc4 43. Na4 1/2-1/2

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.15"] [Round "4"] [White "Djerkovic, Miladin"] [Black "Hergott, Deen"] [Result "1/2-1/2"] [WhiteElo "2380"] [BlackElo "2555"] [ECO "B01"] [EventDate "1997.06.14"] [PlyCount "45"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bc4 c6 6. Nf3 Bg4 7. h3 Bh5 8. g4 Bg6 9. Ne5 e6 10. h4 Bb4 11. Bd2 Qb6 12. Be3 Bxc3+ 13. bxc3 Qa5 14. Bd2 Nbd7 15. Nxd7 Nxd7 16. h5 Be4 17. f3 Bd5 18. Bd3 Qc7 19. Rh3 b5 20. a4 a6 21. Qe2 O-O 22. f4 f6 23. c4 1/2-1/2

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.15"] [Round "4"] [White "Pacey, Kevin"] [Black "Yip, Michael"] [Result "1-0"] [WhiteElo "2277"] [BlackElo "2163"] [ECO "D00"] [EventDate "1997.06.14"] [PlyCount "55"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. d4 d5 2. e3 Nf6 3. Bd3 g6 4. Nd2 Bg7 5. f4 c5 6. c3 O-O 7. Ngf3 Nc6 8. O-O Qc7 9. Ne5 Nd7 10. Qf3 e6 11. Qh3 Ndxe5 12. fxe5 f5 13. exf6 Rxf6 14. Rxf6 Bxf6 15. Nf3 e5 16. Qg3 Qg7 17. e4 dxe4 18. Bc4+ Kh8 19. Ng5 Bxg5 20. Bxg5 Bf5 21. Qh4 Rf8 22. Bh6 Qf6 23. Qxf6+ Rxf6 24. dxc5 g5 25. Bxg5 Rg6 26. Bh4 Bh3 27. Bg3 Bg4 28. b4 1-0

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.15"] [Round "4"] [White "Veltmann, Alfred"] [Black "Arseneau, Peter"] [Result "1/2-1/2"] [WhiteElo "1921"] [BlackElo "1881"] [ECO "C89"] [EventDate "1997.06.14"] [PlyCount "80"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Qf3 Bg4 16. Qg2 Qh5 17. h4 Rae8 18. Be3 Bf3 19. Qh2 Re4 20. Bxd5 cxd5 21. Nd2 Re6 22. Nxf3 Qxf3 23. Qg2 Qh5 24. Bd2 Rfe8 25. Rxe6 Rxe6 26. f3 Bxg3 27. Qxg3 Rg6 28. Bg5 h6 29. f4 hxg5 30. hxg5 f6 31. Qg2 fxg5 32. Qxd5+ Kh7 33. f5 Qg4+ 34. Kf2 Rh6 35. Rh1 Qf4+ 36. Ke2 Rh2+ 37. Rxh2+ Qxh2+ 38. Ke3 g4 39. Qe6 Qh3+ 40. Kd2 g3 1/2-1/2

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.15"] [Round "4"] [White "Veltmann, Martin"] [Black "Laszlo, Robert"] [Result "1/2-1/2"] [WhiteElo "2141"] [BlackElo "1968"] [ECO "D43"] [EventDate "1997.06.14"] [PlyCount "133"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. c4 Nf6 2. Nc3 d5 3. d4 e6 4. Nf3 c6 5. Bf4 Bd6 6. Bxd6 Qxd6 7. e3 Ne4 8. Qc2 f5 9. Nd2 O-O 10. f3 Nxd2 11. Qxd2 e5 12. dxe5 Qxe5 13. cxd5 Rd8 14. Bc4 Be6 15. f4 Qd6 16. Rd1 Bf7 17. dxc6 Qxd2+ 18. Rxd2 Nxc6 19. Rxd8+ Rxd8 20. Bxf7+ Kxf7 21. Ke2 Ke6 22. Na4 Rd5 23. Rc1 Kd6 24. Nc3 Ra5 25. Rd1+ Ke6 26. a3 Rc5 27. Kf3 b5 28. e4 b4 29. exf5+ Rxf5 30. g4 Ra5 31. f5+ Ke7 32. Nd5+ Ke8 33. axb4 Ra2 34. Rd2 Ne5+ 35. Kf4 Rxb2 36. Rxb2 Nd3+ 37. Kg5 Nxb2 38. f6 Kf7 39. fxg7 Kxg7 40. Kf5 Kf7 41. Ke5 a5 42. b5 a4 43. Kd4 a3 44. Nb4 Ke6 45. h4 Nd1 46. b6 Kd7 47. g5 Nf2 48. Ke3 Nd1+ 49. Kf4 Nc3 50. Kf5 Nd5 51. Na2 Nxb6 52. Kf6 Ke8 53. Kg7 Nd5 54. Kxh7 Kf8 55. Kg6 Kg8 56. Kf5 Kg7 57. h5 Ne3+ 58. Ke4 Nf1 59. Kf4 Nd2 60. Nc3 Nb3 61. Ke5 Nc1 62. Kf5 a2 63. h6+ Kh7 64. Nxa2 Nxa2 65. Kf6 Nc3 66. g6+ Kxh6 67. g7 1/2-1/2

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.15"] [Round "5"] [White "Hergott, Deen"] [Black "Schleifer, Michael"] [Result "1/2-1/2"] [WhiteElo "2555"] [BlackElo "2429"] [ECO "D93"] [EventDate "1997.06.14"] [PlyCount "79"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. Nf3 d5 2. c4 c6 3. d4 Nf6 4. Nc3 g6 5. Bf4 Bg7 6. e3 O-O 7. h3 Qa5 8. Qd2 Nbd7 9. cxd5 Nxd5 10. Nxd5 Qxd5 11. Rc1 Qxa2 12. Bc4 Qa4 13. b3 Qa3 14. O-O Nb6 15. Ra1 Nxc4 16. bxc4 Qb3 17. Rfc1 Qb6 18. Rcb1 Qd8 19. c5 Qd5 20. Ra3 Re8 21. Qe2 h6 22. e4 Qd8 23. Qe3 Kh7 24. Ne5 Rf8 25. Rba1 g5 26. Bg3 f6 27. Nc4 f5 28. Be5 Bxe5 29. Nxe5 fxe4 30. Rxa7 Rxa7 31. Rxa7 Qd5 32. Ra8 Kg7 33. h4 g4 34. Kh2 Qe6 35. Qxe4 Qf6 36. Rxc8 Qxh4+ 37. Kg1 Qxf2+ 38. Kh2 Qh4+ 39. Kg1 Qf2+ 40. Kh2 1/2-1/2

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.15"] [Round "5"] [White "Poulin, Rene"] [Black "Daku, Zoltan"] [Result "1-0"] [WhiteElo "1819"] [BlackElo "1647"] [ECO "C84"] [EventDate "1997.06.14"] [PlyCount "119"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bd7 5. c3 Be7 6. Re1 Nf6 7. d3 O-O 8. Nbd2 a6 9. Ba4 h6 10. Nf1 b5 11. Bc2 Nh7 12. Ng3 f5 13. exf5 Bxf5 14. Nxf5 Rxf5 15. d4 Rf8 16. dxe5 Nxe5 17. Nxe5 dxe5 18. Qxd8 Raxd8 19. Rxe5 Bd6 20. Re1 Nf6 21. Be3 Rfe8 22. Re2 Re7 23. Rae1 Rde8 24. Bg6 Rf8 25. Bd4 Rxe2 26. Rxe2 c5 27. Be5 Rd8 28. Rd2 Be7 29. Rxd8+ Bxd8 30. Bd6 c4 31. f3 Bb6+ 32. Kf1 Be3 33. Be5 Nd7 34. Bd4 Bxd4 35. cxd4 Nb6 36. Bc2 Kf8 37. Ke2 Ke7 38. Ke3 Ke6 39. Ke4 b4 40. g4 g5 41. f4 gxf4 42. Kxf4 Nd5+ 43. Kf3 Nf6 44. Be4 a5 45. h3 a4 46. Bc2 b3 47. axb3 cxb3 48. Bf5+ Kd6 49. h4 Kd5 50. Ke3 a3 51. bxa3 b2 52. g5 hxg5 53. hxg5 Nd7 54. Kd2 Kxd4 55. Kc2 Ne5 56. Kxb2 Nc4+ 57. Kb3 Nxa3 58. Kxa3 Ke5 59. g6 Kf6 60. Kb4 1-0

[Event "Eastern Ontario op"] [Site "Ottawa CAN"] [Date "1997.06.15"] [Round "5"] [White "Taylor, Gordon"] [Black "Pacey, Kevin"] [Result "1-0"] [WhiteElo "2411"] [BlackElo "2277"] [ECO "E01"] [EventDate "1997.06.14"] [PlyCount "43"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] 1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 d5 6. Bg2 e5 7. Nf3 d4 8. O-O Nc6 9. e3 d3 10. Nc3 Bb4 11. Nxe5 Nxe5 12. Qa4+ Nc6 13. Bxc6+ bxc6 14. Qxb4 d2 15. Bxd2 Qxd2 16. Rfd1 Qc2 17. Qd6 Nd7 18. Qxc6 Rb8 19. Nd5 h5 20. Qd6 Qe4 21. Rd4 Qe5 22. Nc7+ 1-0