| ECO A05 in 2000 play it! mazi leon defeats white's michor franz by checkmate in 80 moves | 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. c4 Nbd7 7. Nc3 e5 8. dxe5 dxe5 9. Qc2 Re8 10. Rd1 c6 11. b3 Qe7 12. a4 a5 13. Ba3 Nc5 14. Ng5 Bf8 15. Nge4 Nfxe4 16. Nxe4 Bf5 17. Bxc5 Bxe4 18. Bxe4 Qxc5 19. Rd7 Qb6 20. Rad1 Bc5 21. e3 Rad8 22. Qd3 Rxd7 23. Qxd7 Kf8 24. Qd3 Be7 25. Qc2 Rd8 26. Rd3 Qc5 27. Qd1 Rxd3 28. Qxd3 Ke8 29. Bf3 Qb4 30. e4 Bc5 31. Bg4 Qe1+ 32. Kg2 Qxf2+ 33. Kh3 h5 34. Bc8 Bd4 35. g4 Kd8 36. Bxb7 Kc7 37. Ba6 Be3 38. Qd1 Bf4 39. Qh1 Qe3+ 40. Kh4 Bg5# |
| ECO A05 in 1997 play it! mazi leon defeats white's hicker harald in 84 moves | 1. Nf3 Nf6 2. d4 e6 3. c4 c5 4. Nc3 cxd4 5. Nxd4 Nc6 6. e3 Qc7 7. Be2 a6 8. O-O Be7 9. b3 O-O 10. Bb2 d6 11. Rc1 Re8 12. Bf3 Ne5 13. Be2 b6 14. f4 Ned7 15. Bf3 Bb7 16. Bxb7 Qxb7 17. f5 Bf8 18. fxe6 fxe6 19. e4 Ne5 20. Nf3 Rad8 21. Qe2 Ng6 22. Qc2 d5 23. cxd5 exd5 24. exd5 Ng4 25. Qd2 Bc5+ 26. Nd4 Qb8 27. g3 Qe5 28. Rcd1 Qh5 29. Na4 Rxd5 30. Qc2 Ne3 31. Qf2 Nxf1 32. Rxf1 Rf8 33. Qe3 Rxf1+ 34. Kxf1 Bxd4 35. Qe8+ Nf8 36. Qxh5 Rxh5 37. Bxd4 Rxh2 38. Bxb6 Rxa2 39. Nc5 Kf7 40. b4 Ne6 41. Nd7 Rb2 42. Ba5 Nd4 |
| ECO A05 in 1999 play it! mazi leon defeats white's gorbatow alexej in 44 moves | 1. Nf3 Nf6 2. c4 g6 3. b4 Bg7 4. Na3 O-O 5. Bb2 a5 6. b5 d6 7. g3 e5 8. d3 Qe7 9. Bg2 Nbd7 10. O-O Nc5 11. d4 exd4 12. Nxd4 Nfe4 13. f3 Nc3 14. Bxc3 Qe3+ 15. Kh1 Qxc3 16. Ndc2 Be6 17. b6 cxb6 18. Qxd6 Bxc4 19. Qxb6 Bxe2 20. Rf2 Ra6 21. Qb1 Re6 22. Kg1 Nd3 |
| ECO A04 in 1997 play it! mazi leon defeats white's gallob alois in 68 moves | 1. Nf3 c5 2. g3 Nc6 3. Bg2 e5 4. d3 d5 5. Nbd2 Be6 6. c3 f6 7. a3 a5 8. a4 Qd7 9. h3 Rd8 10. Qc2 Bd6 11. Nf1 Nge7 12. Bd2 O-O 13. g4 Ng6 14. Ng3 Nf4 15. Bf1 Rfe8 16. Nh4 d4 17. e3 Nd5 18. e4 dxc3 19. bxc3 Nf4 20. Be3 Bf8 21. Rd1 Qf7 22. Rb1 Rd7 23. Rb5 Red8 24. Bxf4 exf4 25. Nh5 Bd6 26. Be2 g6 27. Nf5 Bxf5 28. gxf5 gxh5 29. Qb3 Qxb3 30. Rxb3 c4 31. Rg1+ Kf8 32. dxc4 Bc5 33. Bxh5 Ne5 34. Rb1 Rd2 |
| ECO A05 in 2003 play it! mazi leon defeats white's hellmayr alois m in 68 moves | 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. Nbd2 Nbd7 7. e4 c5 8. c3 Ne8 9. Re1 Nc7 10. b3 b6 11. Bb2 Bb7 12. Rc1 b5 13. Rc2 a5 14. d5 a4 15. c4 f6 16. Nh4 Na6 17. Bh3 Ne5 18. Bxe5 fxe5 19. Be6+ Kh8 20. Qg4 Bh6 21. Ndf3 Nb4 22. Rce2 axb3 23. axb3 bxc4 24. bxc4 Rf6 25. Qh3 Qf8 26. Kg2 Ra3 27. Qg4 Ba6 28. Nd2 Nc2 29. Ndf3 Nxe1+ 30. Rxe1 Bxc4 31. Bd7 Bd3 32. Qh3 Rxf3 33. Nxf3 Bxe4 34. Bg4 Bxf3+ |
| ECO A05 in 2004 play it! mazi leon defeats white's rieke theo in 62 moves | 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. d4 d6 6. Be2 Nbd7 7. O-O e5 8. d5 Nc5 9. Bg5 h6 10. Bxf6 Qxf6 11. b4 Nd7 12. Nd2 Qe7 13. Rc1 f5 14. Nb5 Nf6 15. c5 fxe4 16. cxd6 cxd6 17. Nc4 Bd7 18. a4 Bxb5 19. axb5 h5 20. Ne3 Bh6 21. Qb3 Rf7 22. Rc2 Raf8 23. Rfc1 Ne8 24. Bf1 Qg5 25. Re1 Ng7 26. Nc4 Nf5 27. Rxe4 Nd4 28. Rxd4 exd4 29. Nxd6 Rf3 30. Bd3 Re3 31. Re2 Rxd3 |
| ECO A05 in 2000 play it! mazi leon defeats white's jurkovic ante in 108 moves | 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d6 6. e4 c5 7. h3 Nc6 8. Nc3 Rb8 9. a4 a6 10. Be3 Ne8 11. d4 b6 12. Qd2 Nc7 13. d5 Nb4 14. Bh6 e6 15. Bxg7 Kxg7 16. Nh2 exd5 17. exd5 Bf5 18. Rac1 Qf6 19. Rfd1 h5 20. Nf1 b5 21. axb5 axb5 22. Ne3 Rfe8 23. Re1 Bd7 24. Rcd1 Rb6 25. h4 Ra6 26. b3 Na2 27. Ne2 b4 28. Ra1 Bb5 29. Nf4 Nc3 30. Rxa6 Bxa6 31. Bf3 Kf8 32. Nc4 Rxe1+ 33. Qxe1 N7b5 34. Kg2 Nd4 35. Ne3 Qe5 36. Bd1 Bb7 37. Qd2 Nxd5 38. Nexd5 Bxd5+ 39. Nxd5 Qxd5+ 40. f3 Kg7 41. Qd3 Qe5 42. Kf2 Nf5 43. f4 Qd4+ 44. Qxd4+ Nxd4 45. Kg2 Kf6 46. Kh3 Nf5 47. Be2 Ne3 48. Bd3 Ke6 49. Kh2 Kd5 50. Kg1 Kd4 51. Kf2 d5 52. Kf3 c4 53. bxc4 dxc4 54. Be4 f5 |
| ECO A05 in 2005 play it! mazi leon defeats white's niedermair hanne in 38 moves | 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d3 d5 5. Nbd2 O-O 6. O-O c5 7. e4 Nc6 8. c3 b6 9. Re1 dxe4 10. dxe4 Bb7 11. Qc2 Qd7 12. Nc4 Rad8 13. e5 Ne8 14. e6 fxe6 15. Ng5 Nc7 16. Bh3 Qd5 17. Qe4 b5 18. Qh4 h6 19. Nxe6 Nd4 |
| ECO A05 in 1996 play it! mazi leon defeats white's sereinig eduard in 68 moves | 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 c5 6. e4 Nc6 7. Nc3 Rb8 8. Nh4 b5 9. f4 b4 10. Ne2 Qb6 11. Kh1 d6 12. f5 a5 13. Nf4 Ne5 14. Nd5 Nxd5 15. exd5 Bb7 16. g4 Nd7 17. g5 Qd8 18. Qe2 Ne5 19. Bf4 Qd7 20. Bg3 Rbe8 21. Rf2 Qc8 22. c3 bxc3 23. bxc3 Qa8 24. d4 cxd4 25. cxd4 Ba6 26. Qe4 Nd3 27. Rf3 Nc5 28. Qc2 Bxd4 29. Rd1 Rc8 30. fxg6 hxg6 31. Nxg6 fxg6 32. Rxd4 Nd3 33. Rxf8+ Kxf8 34. Qd1 Rc1 |
| ECO A05 in 2005 play it! mazi leon defeats white's hellmayr alois m in 108 moves | 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. Re1 Nbd7 7. e4 e5 8. dxe5 dxe5 9. b3 c6 10. Bb2 Qc7 11. Nbd2 Re8 12. Nc4 Bf8 13. a4 Bb4 14. Re2 b6 15. c3 Bf8 16. b4 b5 17. Ncd2 Nb6 18. a5 Na4 19. Rxa4 bxa4 20. Qxa4 Rb8 21. Qa1 Ba6 22. Re1 Rbd8 23. Bf1 Bxf1 24. Kxf1 Rd3 25. Kg2 Nh5 26. Nc4 f6 27. Qb1 Rdd8 28. Ne3 Qd7 29. Rd1 Qe6 30. h3 Ng7 31. Ba3 Qf7 32. Qc2 Ne6 33. Qa4 Rxd1 34. Qxd1 Rd8 35. Qa4 Qd7 36. Ng4 Bg7 37. Bc1 h5 38. Ngh2 Kh7 39. Be3 a6 40. Bb6 Re8 41. Nf1 Bh6 42. Ne3 Ng5 43. Nxg5+ Bxg5 44. Qb3 f5 45. Qc4 f4 46. Nf1 Rf8 47. Qxa6 Qd1 48. Qb7+ Kh6 49. h4 Bxh4 50. Bc5 f3+ 51. Kh2 Rf6 52. Qc8 Qxf1 53. Qh8+ Kg5 54. gxh4+ Kg4 |
| ECO A05 in 1999 play it! mazi leon defeats white's ciglic boris in 52 moves | 1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. bxc3 f5 10. d5 Na6 11. Nd4 Nc5 12. a4 Qc8 13. a5 g6 14. Bf4 Bf6 15. Nb3 Ne4 16. Bxe4 fxe4 17. Qxe4 Bxc3 18. Ra4 Bg7 19. a6 Bxa6 20. dxe6 Bb7 21. Qc2 dxe6 22. c5 Qd7 23. Rc4 Bd5 24. c6 Qf7 25. Ra4 e5 26. Be3 Bxb3 |
| ECO A05 in 2004 play it! mazi leon defeats white's reichenbacher ge in 54 moves | 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. d4 d6 6. Be2 Nbd7 7. O-O e5 8. Be3 h6 9. Ne1 c6 10. Qd2 Kh7 11. d5 c5 12. Nd3 Qe7 13. f3 Ne8 14. g4 f5 15. gxf5 gxf5 16. Kh1 Nef6 17. Rg1 f4 18. Bf2 Nh5 19. b4 b6 20. bxc5 bxc5 21. Rab1 Bf6 22. Qe1 Rf7 23. Nc1 Bg5 24. Nb3 Rg7 25. Na5 Qf7 26. Bf1 Ng3+ 27. hxg3 Qh5+ |
| ECO A05 in 2000 play it! mazi leon defeats white's erharter christi in 58 moves | 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d6 6. e4 c5 7. Nbd2 Nc6 8. Re1 Rb8 9. Nf1 b5 10. c3 b4 11. Bd2 Nd7 12. Qc2 a5 13. Nh4 Qb6 14. Ne3 bxc3 15. bxc3 Qb2 16. Qxb2 Rxb2 17. Nc4 Rxd2 18. Nxd2 Bxc3 19. Rad1 Nde5 20. Nhf3 Bg4 21. Nxe5 Nxe5 22. f3 Be6 23. Re2 Bxa2 24. Nc4 Bb3 25. Rb1 a4 26. Nxe5 Bxe5 27. f4 Bd4+ 28. Kf1 e5 29. Bh3 c4 |
| ECO A05 in 1994 play it! mazi leon defeats white's marinsek tomaz in 58 moves | 1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. e3 d6 5. Be2 O-O 6. h3 c6 7. O-O Nfd7 8. e4 e5 9. dxe5 dxe5 10. Be3 Qe7 11. Qc1 Nc5 12. Nbd2 Nbd7 13. b4 Ne6 14. c3 f5 15. Nb3 fxe4 16. Ng5 Nf4 17. Bc4+ Kh8 18. Nxe4 b5 19. Bxf4 exf4 20. Bd3 Ne5 21. Bc2 Be6 22. Nd4 Bd5 23. Re1 f3 24. Qg5 Qf7 25. a3 h6 26. Qh4 Kg8 27. Re3 a5 28. Rae1 axb4 29. Nd6 Qc7 |
| ECO A21 in 1998 play it! mazi leon defeats white's grom waldemar in 62 moves | 1. c4 e5 2. Nc3 Bb4 3. Nd5 Ba5 4. Nf3 c6 5. Nc3 d6 6. d4 e4 7. Nd2 Nf6 8. e3 O-O 9. Be2 Re8 10. Qc2 d5 11. a3 a6 12. b4 Bc7 13. Nf1 Nbd7 14. Bd2 dxc4 15. Bxc4 Nb6 16. Ba2 Bf5 17. Ng3 Bg6 18. Rc1 Bd6 19. Nce2 h5 20. h3 h4 21. Nf1 Nbd5 22. g3 Nh7 23. Nf4 Nxf4 24. gxf4 Bxf4 25. exf4 e3 26. Qxg6 exd2+ 27. Kxd2 Qxd4+ 28. Qd3 Qxf2+ 29. Kc3 Qxa2 30. Nd2 Rad8 31. Qc2 Re3+ |
| ECO A16 in 1996 play it! mazi leon defeats white's valenta vit in 75 moves | 1. c4 Nf6 2. Nc3 d6 3. d4 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5 c6 7. O-O-O+ Nd7 8. e3 Kc7 9. Nf3 Bb4 10. Ne2 Ne4 11. Bh4 f6 12. a3 Be7 13. Nd2 Nxd2 14. Kxd2 Nb6 15. Kc3 Na4+ 16. Kb3 Nc5+ 17. Kc3 Ne4+ 18. Kb3 Be6 19. Nc3 Nd6 20. a4 Nf5 21. Bg3 h5 22. f4 Nxe3 23. Re1 Nxf1 24. Rhxf1 Rad8 25. fxe5 f5 26. Bf2 Rd2 27. h4 Rxf2 28. Rxf2 Bxh4 29. Ree2 Bxf2 30. Rxf2 g5 31. Ne2 f4 32. Nd4 Kd7 33. Rd2 Ke7 34. a5 c5 35. Nb5 h4 36. Nc7 h3 37. gxh3 Rxh3+ 38. Ka4 |
| ECO A16 in 1995 play it! mazi leon defeats white's titz heimo in 106 moves | 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 O-O 6. Be2 Nbd7 7. O-O e5 8. Be3 h6 9. dxe5 dxe5 10. Qc2 c6 11. Rad1 Qe7 12. a3 Nh5 13. g3 Re8 14. b4 Nf8 15. Nd2 Bh3 16. Rfe1 Ne6 17. Nb3 Nhf4 18. Bf3 Ng5 19. Bh1 Bg4 20. gxf4 exf4 21. f3 Bxf3 22. Bc5 Qe6 23. Bxf3 Nxf3+ 24. Kh1 Nxe1 25. Rxe1 Qxc4 26. Rc1 Bxc3 27. Nd2 Qe2 28. Qxc3 Rad8 29. Nf1 Qxe4+ 30. Kg1 Re5 31. h4 Rd3 32. Qc2 Qf3 33. Qg2 Qh5 34. Bf2 Re2 35. Rc5 Qf3 36. Rc1 Qxg2+ 37. Kxg2 Rxa3 38. Kg1 Raa2 39. Bc5 Rg2+ 40. Kh1 Rg4 41. Be7 g5 42. hxg5 hxg5 43. Rd1 Rc2 44. Bc5 b6 45. Bd6 Rh4+ 46. Kg1 f3 47. Bh2 g4 48. Rd7 f5 49. Bg3 Rh6 50. Bf4 Re6 51. Rd1 Re4 52. Bb8 f4 53. Rd6 g3 |
| ECO A10 in 1995 play it! mazi leon defeats white's petek pavel in 53 moves | 1. c4 d6 2. Nc3 Nf6 3. g3 g6 4. Bg2 Bg7 5. e4 O-O 6. Nge2 c5 7. O-O Nc6 8. d3 a6 9. a3 Ne8 10. Rb1 e6 11. Be3 Nd4 12. b4 Nxe2+ 13. Nxe2 b6 14. bxc5 bxc5 15. d4 cxd4 16. Bxd4 Bxd4 17. Qxd4 e5 18. Qd3 Be6 19. Nc3 Nf6 20. Rfd1 Qa5 21. Nd5 Bxd5 22. cxd5 Nd7 23. Qe3 Kg7 24. f4 Rfd8 25. f5 Qc5 26. Qxc5 Nxc5 27. Rb6 |
| ECO A16 in 1999 play it! mazi leon defeats white's wiedner robert in 96 moves | 1. c4 Nf6 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. Nf3 O-O 6. O-O e5 7. d4 Nbd7 8. b3 Re8 9. Bb2 c6 10. dxe5 dxe5 11. Nd2 Nc5 12. h3 Bf5 13. Re1 Qb6 14. g4 Be6 15. Ba3 Rad8 16. Qc2 h5 17. Bxc5 Qxc5 18. Nde4 Qe7 19. Nxf6+ Qxf6 20. gxh5 gxh5 21. e3 Bf5 22. Ne4 Qh4 23. Kh2 Re6 24. Rad1 Rxd1 25. Rxd1 Rg6 26. f3 Bh6 27. Qe2 Be6 28. Rd3 f5 29. Qf2 Qe7 30. Nc3 Bg5 31. f4 Bh4 32. Qf1 e4 33. Rd2 Qc5 34. Qe2 Bf6 35. Qxh5 Kg7 36. Nd1 Qe7 37. Bf1 Qf7 38. Rf2 Qd7 39. Qe2 Kh6 40. Qd2 Rg7 41. Qc2 Bh4 42. Rd2 Qe8 43. Rg2 Rxg2+ 44. Qxg2 Bf7 45. Qd2 Bh5 46. Nc3 Qg6 47. Bg2 Bf3 48. Kg1 Be1 |
| ECO A16 in 2000 play it! mazi leon defeats white's jeric simon in 126 moves | 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. e4 e5 6. Nge2 d6 7. d3 Nbd7 8. O-O c6 9. h3 a5 10. Be3 Re8 11. Qd2 Nc5 12. f4 exf4 13. gxf4 Qe7 14. Ng3 a4 15. Rae1 Nfd7 16. d4 Ne6 17. f5 Nef8 18. Kh1 Nb6 19. Qd3 Nfd7 20. Re2 c5 21. Nd5 Nxd5 22. exd5 cxd4 23. Bxd4 Ne5 24. Bxe5 Bxe5 25. f6 Qf8 26. c5 Qh6 27. Ne4 Bd7 28. cxd6 Rac8 29. b4 axb3 30. axb3 Rc1 31. Rf2 Rec8 32. Qd2 Rxf1+ 33. Rxf1 Qh4 34. Qg5 Qxg5 35. Nxg5 Bxd6 36. Ne4 Be5 37. Rd1 Bf5 38. d6 b6 39. Kg1 Rd8 40. Rd5 Bf4 41. Kf2 Bxe4 42. Bxe4 Rxd6 43. Rxd6 Bxd6 44. Kf3 Be5 45. b4 Bxf6 46. Bd5 Kg7 47. Kf4 Be7 48. b5 Bd6+ 49. Kf3 f5 50. Be6 Kf6 51. Bd7 g5 52. Be8 Bc7 53. Kg2 g4 54. Kf2 Kg5 55. Bd7 h5 56. h4+ Kxh4 57. Bxf5 Kg5 58. Bd7 h4 59. Ke3 h3 60. Be6 Kh4 61. Kf2 Bd6 62. Kg1 g3 63. Bd5 g2 |