| ECO A02 in 1998 play it! welz peter defeats black's westphal wolfgan in 39 moves | 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 Nc6 6. d4 g4 7. Ne5 Bxe5 8. dxe5 Qxd1+ 9. Kxd1 Bf5 10. Bf4 O-O-O+ 11. Kc1 Nge7 12. Nc3 Ng6 13. Bg5 Rd7 14. Bf6 Re8 15. e4 Be6 16. Bb5 a6 17. Bxc6 bxc6 18. b3 Rd4 19. Kb2 Bd7 20. e6 |
| ECO B24 in 2003 play it! welz peter defeats black's beyer till in 101 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 e6 4. Bg2 d6 5. Nge2 Nf6 6. O-O Be7 7. d4 cxd4 8. Nxd4 O-O 9. Bg5 a6 10. Nb3 Qc7 11. a4 b6 12. Qe2 Bb7 13. h3 Rac8 14. f4 Nd7 15. Bxe7 Nxe7 16. Rad1 Nc5 17. Nxc5 Qxc5+ 18. Kh2 Rfe8 19. Rd2 Rcd8 20. Rfd1 Qc7 21. Rd4 Rd7 22. Qd3 Red8 23. Nb1 Bc8 24. Na3 d5 25. exd5 Nxd5 26. Qb3 g6 27. Nc4 Nxf4 28. Rxd7 Rxd7 29. Rxd7 Bxd7 30. gxf4 Qxf4+ 31. Kg1 Qd4+ 32. Kh1 Bxa4 33. Qxa4 b5 34. Qxa6 Qxc4 35. Qc6 Qe2 36. Qc8+ Kg7 37. Qc3+ Kh6 38. b4 f5 39. Kh2 f4 40. Qd3 Qe5 41. Bf1 Qc7 42. c4 f3+ 43. Kh1 bxc4 44. Qxc4 Qb7 45. b5 e5 46. Qc6 Qf7 47. b6 Qf4 48. b7 e4 49. Qc8 f2 50. b8=Q Qf3+ 51. Kh2 |
| ECO B24 in 2001 play it! welz peter defeats black's teteriatnikov ko in 75 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 b6 7. Qd2 Bb7 8. Nge2 Nd4 9. Bxd4 cxd4 10. Nb5 d6 11. Qb4 Bf8 12. Qxd4 Nf6 13. O-O Be7 14. c4 a6 15. Nbc3 O-O 16. h3 Rc8 17. Qe3 Nd7 18. g4 Bg5 19. f4 Bh6 20. g5 Bg7 21. h4 h5 22. Bh3 Qe7 23. Ng3 Bc6 24. Rae1 b5 25. f5 exf5 26. Qd2 fxe4 27. Ncxe4 Bd4+ 28. Kh2 Bxe4 29. Nxe4 Qd8 30. Nf6+ Bxf6 31. gxf6 Kh7 32. cxb5 axb5 33. d4 Rc4 34. b3 Rc7 35. Qg5 Rc2+ 36. Kg1 Re8 37. Re7 Rxe7 38. fxe7 |
| ECO B23 in 1997 play it! welz peter defeats black's jaeger andre in 99 moves | 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 Nf6 5. e5 Nfd7 6. f4 Nc6 7. Nf3 a6 8. O-O b5 9. Kh1 b4 10. Ne2 Bb7 11. d3 d4 12. Neg1 Ne7 13. Qe2 Qc7 14. Bd2 Nd5 15. f5 O-O-O 16. fxe6 fxe6 17. a3 a5 18. axb4 axb4 19. Ra7 Be7 20. Rfa1 Rde8 21. Qe1 Nb8 22. c4 bxc3 23. bxc3 Nc6 24. R7a2 dxc3 25. Bxc3 Kd7 26. Nh3 Ncb4 27. Bxb4 Nxb4 28. Rd2 h6 29. Nf2 g5 30. Rb1 h5 31. d4 c4 32. Rdb2 g4 33. Nh4 Bxh4 34. Rxb4 Bxg2+ 35. Kxg2 Qc6+ 36. Kg1 Bd8 37. Ne4 Ref8 38. Nc5+ Ke8 39. Rxc4 h4 40. Ne4 Rf1+ 41. Qxf1 Qxe4 42. Re1 Qd5 43. Qd3 hxg3 44. Qg6+ Kd7 45. Qf7+ Be7 46. Rc7+ Kxc7 47. Qxe7+ Kb6 48. Rb1+ Ka6 49. Qa3+ Qa5 50. Qd6+ |
| ECO B24 in 1998 play it! welz peter defeats black's rath wolfgang in 49 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 d6 4. Bg2 Nf6 5. Nge2 g6 6. O-O Bg7 7. d3 a6 8. f4 e6 9. h3 Qc7 10. Be3 b5 11. e5 dxe5 12. fxe5 Nd7 13. Ne4 Bxe5 14. Nxc5 Bxb2 15. Ne4 Bxa1 16. Qxa1 e5 17. Ng5 O-O 18. Bd5 Nb6 19. Bxf7+ Kh8 20. Nf4 Rxf7 21. Nxg6+ hxg6 22. Rxf7 Qd8 23. Qf1 Bf5 24. Rxf5 Nd5 25. Nf7+ |
| ECO B26 in 2001 play it! welz peter defeats black's kummer wolfram in 127 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Nf6 7. h3 Bd7 8. Nge2 Qc8 9. Qd2 h6 10. O-O-O Rb8 11. f4 b5 12. e5 b4 13. Ne4 Nxe4 14. dxe4 Qa6 15. Kb1 Be6 16. Nc1 c4 17. f5 c3 18. Qf2 cxb2 19. Nb3 Bxb3 20. cxb3 Nxe5 21. Bd4 O-O 22. Qxb2 Qb7 23. Rhf1 a5 24. fxg6 fxg6 25. Rf4 Qb5 26. Bf1 Qb7 27. Bg2 a4 28. bxa4 Kh7 29. Qb3 g5 30. Rxf8 Rxf8 31. Rc1 Bf6 32. Qd5 Qxd5 33. exd5 Nd3 34. Bxf6 Nxc1 35. Bxe7 Re8 36. Bxd6 Nd3 37. a5 Re1+ 38. Kc2 Re2+ 39. Kxd3 Rxg2 40. Bxb4 Rxg3+ 41. Kc4 Rxh3 42. a6 Re3 43. a7 Re8 44. Bd6 Ra8 45. Bb8 g4 46. d6 g3 47. d7 g2 48. d8=Q g1=Q 49. Qd3+ Kg8 50. Qd5+ Kh7 51. Qf7+ Qg7 52. Qxg7+ Kxg7 53. Kd5 h5 54. Kc6 h4 55. Kb7 Rxa7+ 56. Bxa7 h3 57. Bg1 Kf6 58. a4 Ke5 59. a5 Kf4 60. a6 Kg3 61. Bb6 Kg2 62. Bc7 h2 63. Bxh2 Kxh2 64. a7 |
| ECO B26 in 1997 play it! welz peter defeats black's schoenfeld gerd in 63 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Nd4 7. Nh3 h5 8. f3 b5 9. a3 h4 10. g4 Qa5 11. O-O e6 12. f4 Bb7 13. f5 gxf5 14. gxf5 exf5 15. Nd5 Nf6 16. Nxf6+ Bxf6 17. c3 Nc6 18. Rxf5 Be5 19. d4 cxd4 20. cxd4 Qb6 21. Kh1 Bxd4 22. Qb3 Ne5 23. Bxd4 Qxd4 24. Qxb5+ Bc6 25. Rxe5+ Kd7 26. Re7+ Kxe7 27. Qxc6 Qxb2 28. Qc7+ Ke6 29. Nf4+ Kf6 30. Rf1 Kg7 31. Ne6+ Kh6 32. Qxf7 |
| ECO B24 in 2002 play it! welz peter defeats black's gehler rainer in 37 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. d3 Bg7 6. f4 d6 7. Nf3 O-O 8. O-O Bg4 9. h3 Bd7 10. g4 h5 11. g5 Ne8 12. Bd2 Qc8 13. Kh2 e5 14. f5 gxf5 15. Nh4 f4 16. Qxh5 Nc7 17. Nf5 Ne8 18. Rg1 Qd8 19. Nd5 |
| ECO B24 in 1997 play it! welz peter defeats black's kiesekamp marcos in 95 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 Nge7 8. Bh6 Bf6 9. Nh3 Nd4 10. O-O Bd7 11. Nd1 b5 12. c3 Ndc6 13. f4 Qb6 14. Ne3 Ng8 15. Ng4 Be7 16. Bg7 h5 17. Bxh8 hxg4 18. Nf2 f5 19. d4 Nh6 20. dxc5 dxc5 21. Be5 Nf7 22. exf5 gxf5 23. Qe3 O-O-O 24. Rad1 Ncxe5 25. fxe5 Bc6 26. Rxd8+ Bxd8 27. h3 Bxg2 28. Kxg2 Ng5 29. Nd3 Qc6+ 30. Kh2 c4 31. Qc5 Qxc5 32. Nxc5 Bb6 33. h4 Nf3+ 34. Rxf3 gxf3 35. Nxe6 Be3 36. Ng7 Bc1 37. h5 a5 38. Nxf5 Bxb2 39. Nd6+ Kd7 40. Nxb5 Bc1 41. Nd6 Ke6 42. Nxc4 Kd5 43. Kg1 Bg5 44. Nxa5 Kxe5 45. Nc6+ Kf5 46. a4 Be3+ 47. Kf1 Bc5 48. g4+ |
| ECO B26 in 2003 play it! welz peter defeats black's nguyen hoa my in 89 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. a4 a6 8. Qd2 b5 9. axb5 axb5 10. f4 b4 11. Nd1 Qc7 12. Nf3 e6 13. Qf2 Nge7 14. O-O O-O 15. g4 f5 16. h3 Kh8 17. Qh4 Ng8 18. Rf2 Nd4 19. Ne1 Bb7 20. c3 bxc3 21. bxc3 Nb5 22. Rc1 fxe4 23. dxe4 Nf6 24. f5 Nxe4 25. fxg6 Bxc3 26. Nxc3 Nbxc3 27. Rfc2 Nb5 28. g5 Nec3 29. Rxc3 Nxc3 30. Rxc3 Bxg2 31. Nxg2 Qg7 32. Qxh7+ Qxh7 33. gxh7 Kxh7 34. Nf4 Rbe8 35. Kg2 Rf5 36. h4 Re5 37. Nh5 Kg6 38. Nf6 Rh8 39. Kg3 Rd8 40. Kg4 Rf5 41. h5+ Kg7 42. Ra3 Rf8 43. Ra7+ Rf7 44. h6+ Kg6 45. h7 |
| ECO B23 in 2000 play it! welz peter defeats black's postler reinhard in 70 moves | 1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Be3 d6 7. Qd2 Nd4 8. Nd1 e5 9. c3 Nc6 10. Ne2 Nf6 11. h3 O-O 12. Bh6 Bd7 13. Bxg7 Kxg7 14. O-O Ng8 15. Ne3 Nge7 16. Rad1 Qb6 17. Kh2 Rad8 18. g4 f6 19. f4 Qa6 20. a3 Be6 21. Qe1 Bb3 22. Rd2 d5 23. Nc1 d4 24. Nxb3 dxe3 25. Qxe3 b6 26. Nc1 exf4 27. Qxf4 g5 28. Qg3 Ne5 29. d4 N7g6 30. Qf2 Nc4 31. Rdd1 cxd4 32. Rxd4 Qc8 33. Ne2 Nxb2 34. Ng3 Qxc3 35. Nh5+ Kh8 |
| ECO B24 in 2001 play it! welz peter defeats black's valet richard in 83 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 Rb8 8. Nf3 Nd4 9. Bxd4 cxd4 10. Nb5 Qb6 11. Qb4 Kd7 12. Qa4 a6 13. Nbxd4+ Ke7 14. c3 Qxb2 15. O-O Bd7 16. Qa5 b6 17. Qxa6 Qxc3 18. Rac1 Qa5 19. Qc4 Bxd4 20. Qxd4 e5 21. Qa1 Nh6 22. d4 f6 23. dxe5 fxe5 24. Rc7 Rhc8 25. Rfc1 Rxc7 26. Rxc7 Ng8 27. Bh3 Rd8 28. Qc1 Nf6 29. Qc4 Kf8 30. Bxd7 Rxd7 31. Ng5 d5 32. Qc6 Qe1+ 33. Kg2 Nxe4 34. Rc8+ Kg7 35. Qxd7+ Kh6 36. Nf7+ Kg7 37. Nh8+ Kh6 38. Qh3+ Kg5 39. Qh4+ Kf5 40. Rf8+ Ke6 41. Qxh7 Nd2 42. Qxg6+ |
| ECO B23 in 2003 play it! welz peter defeats black's coder thorsten in 77 moves | 1. e4 c5 2. Nc3 e6 3. g3 a6 4. Bg2 Qc7 5. f4 d6 6. Nf3 Nc6 7. O-O Nf6 8. d3 Be7 9. Kh1 O-O 10. Be3 b5 11. Bg1 Bb7 12. h3 e5 13. f5 Nd4 14. g4 Nxf3 15. Qxf3 Nd7 16. Be3 g5 17. h4 h6 18. Kg1 f6 19. Kf2 Kf7 20. Rh1 Rh8 21. Rh3 Rag8 22. Rah1 Qd8 23. Qg3 Kg7 24. Qh2 Bc6 25. Ne2 Bb7 26. Ng3 Bc6 27. Bf3 Bb7 28. Qg1 Bc6 29. R1h2 Bb7 30. Qh1 Bc6 31. c3 Bb7 32. Bd1 Nb6 33. hxg5 hxg5 34. Rh7+ Rxh7 35. Rxh7+ Kf8 36. Qh6+ Ke8 37. Nh5 Bc6 38. Nxf6+ Bxf6 39. Qh5+ |
| ECO B23 in 1995 play it! welz peter defeats black's oezen alf in 65 moves | 1. e4 c5 2. Nc3 d6 3. g3 Nf6 4. Bg2 e6 5. Nge2 Be7 6. d4 cxd4 7. Nxd4 a6 8. O-O Qc7 9. a4 Bd7 10. a5 Nc6 11. Nb3 Rc8 12. Be3 Ne5 13. Nd2 Nc4 14. Nxc4 Qxc4 15. g4 Bc6 16. g5 Nxe4 17. Bxe4 Bxe4 18. Ra4 Qxa4 19. Nxa4 Bxc2 20. Qd4 O-O 21. Nb6 Rc6 22. Rc1 Rd8 23. f3 d5 24. Qd2 d4 25. Bf4 d3 26. Kg2 Rc5 27. h4 h6 28. gxh6 Bxh4 29. hxg7 Bf6 30. Bh6 Bxb2 31. Qb4 Bxc1 32. Bxc1 Rc6 33. Qh4 |
| ECO B26 in 2003 play it! welz peter defeats black's zawadzki stanisl in 83 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. a4 a6 8. f4 Bd7 9. Nf3 b5 10. axb5 axb5 11. Qd2 b4 12. Nd1 Nf6 13. h3 O-O 14. O-O Qb6 15. Qf2 Ne8 16. g4 Nd4 17. f5 b3 18. c3 Nc2 19. Rb1 Nxe3 20. Nxe3 Qd8 21. g5 f6 22. fxg6 hxg6 23. Qg3 e6 24. gxf6 Nxf6 25. Qxd6 Be8 26. Qxc5 Qxd3 27. Rbd1 Qa6 28. Nd4 Nd7 29. Qe7 Rxf1+ 30. Bxf1 Qb6 31. Nc4 Qc5 32. Qxe6+ Kh7 33. Qd5 Qa7 34. e5 Nc5 35. Kh1 Qc7 36. Nd6 Rd8 37. Bg2 Bxe5 38. Qxe5 Qxd6 39. Qg5 Bf7 40. Rf1 Bd5 41. Rf6 Bxg2+ 42. Kg1 |
| ECO B23 in 2000 play it! welz peter defeats black's mattick lutz in 61 moves | 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 Nf6 5. e5 Nfd7 6. f4 Nc6 7. Nf3 Rb8 8. O-O Be7 9. d3 b5 10. Bd2 O-O 11. Qe1 b4 12. Nd1 Qc7 13. Nf2 Ba6 14. Kh1 Rbe8 15. Bh3 Kh8 16. Qe2 f5 17. Rg1 Bb7 18. g4 d4 19. gxf5 exf5 20. Rg3 g5 21. e6 g4 22. exd7 Qxd7 23. Nxg4 Bh4 24. Nge5 Nxe5 25. fxe5 Bxg3 26. hxg3 Qf7 27. Bf4 Qh5 28. Kg2 Re6 29. Rh1 Rg8 30. Kf2 Qe8 31. Bxf5 |
| ECO B23 in 2000 play it! welz peter defeats black's dupke andreas in 101 moves | 1. e4 c5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. Be3 Nf6 7. h3 a6 8. f4 Qc7 9. Qd2 Rb8 10. Nf3 e5 11. fxe5 dxe5 12. Bxc5 Nd4 13. Nxd4 exd4 14. Bxd4 Qxg3+ 15. Qf2 Qxf2+ 16. Bxf2 b5 17. e5 Nd7 18. Ba7 Rb7 19. Bxb7 Bxb7 20. Rg1 Nxe5 21. O-O-O Nf3 22. Rg4 f5 23. Rb4 Bf8 24. Rb3 Bh6+ 25. Kb1 Nd2+ 26. Rxd2 Bxd2 27. a4 Bxc3 28. bxc3 Bg2 29. axb5 axb5 30. Rxb5 Kd7 31. h4 Ra8 32. Be3 Re8 33. Bg5 Kc6 34. c4 Re2 35. Kb2 Rf2 36. Kb3 f4 37. d4 f3 38. d5+ Kc7 39. c5 Rxc2 40. Kxc2 f2 41. c6 Kd6 42. Bf4+ Ke7 43. d6+ Kf7 44. Rb1 Be4+ 45. Kd2 Bxb1 46. Ke2 Bd3+ 47. Kxf2 Bf5 48. Ke3 Ke8 49. Kd4 Kd8 50. Ke5 h6 51. Bxh6 |
| ECO B24 in 2002 play it! welz peter defeats black's tenner henry in 57 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. Nge2 e6 6. d4 cxd4 7. Nxd4 Be7 8. Nxc6 bxc6 9. e5 Nd5 10. exd6 Qxd6 11. Ne4 Qc7 12. O-O O-O 13. c4 Nf6 14. Qf3 Ba6 15. b3 Nxe4 16. Qxe4 Bf6 17. Rb1 c5 18. Bf4 Qa5 19. Qe2 Rad8 20. h4 Qb6 21. Rbd1 Bb7 22. Bxb7 Qxb7 23. Bd6 Be7 24. Qe5 Bxd6 25. Rxd6 Rxd6 26. Qxd6 Qb6 27. Rd1 Qa5 28. Qe7 Qxa2 29. Rd8 |
| ECO B26 in 2005 play it! welz peter defeats black's decker nils in 79 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Nd4 7. Qd2 Qa5 8. f4 Rb8 9. Nf3 Bg4 10. O-O b5 11. Qf2 Nxf3+ 12. Bxf3 Bh3 13. Rfe1 b4 14. Nd1 e5 15. g4 h5 16. gxh5 gxh5 17. Qg3 Bg4 18. Bxg4 hxg4 19. Qxg4 Nh6 20. Qf3 Qd8 21. Kh1 Qh4 22. Rg1 Ng4 23. h3 Qxh3+ 24. Qxh3 Rxh3+ 25. Kg2 Rh7 26. f5 Ke7 27. Kf3 Nh2+ 28. Ke2 Rbh8 29. Rg2 Bf6 30. Nf2 Rh5 31. a3 a5 32. axb4 axb4 33. Ra7+ Ke8 34. b3 R5h7 35. Nd1 Rh3 36. Nb2 Be7 37. Nc4 f6 38. Ra8+ Bd8 39. Rg7 Kf8 40. Rd7 |
| ECO B26 in 2000 play it! welz peter defeats black's federau juergen in 83 moves | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. Qd2 Nd4 8. Nd1 e5 9. c3 Nc6 10. Ne2 Nge7 11. Bh6 O-O 12. h4 f6 13. Bxg7 Kxg7 14. f4 d5 15. h5 dxe4 16. Bxe4 Bf5 17. Nf2 Qd7 18. hxg6 hxg6 19. O-O-O Rh8 20. Bxf5 Qxf5 21. g4 Qe6 22. b3 Rxh1 23. Rxh1 Rh8 24. Rxh8 Kxh8 25. f5 gxf5 26. Qh6+ Kg8 27. gxf5 Qxf5 28. Ne4 Nd5 29. c4 Ndb4 30. Kd2 Nd4 31. Nxf6+ Kf7 32. Ne4 Nf3+ 33. Kd1 Kg8 34. Qd6 b6 35. a3 Qh3 36. Qb8+ Kg7 37. Qxa7+ Kh8 38. Qb8+ Kg7 39. Qc7+ Kh8 40. Qd8+ Kg7 41. Qf6+ Kg8 42. N4g3 |