| ECO B90 in 1988 play it! wahls matthias defeats black's ostl andreas in 53 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Qd2 b5 8. f3 Bb7 9. g4 h6 10. O-O-O b4 11. Nce2 d5 12. e5 Nfd7 13. f4 Nc5 14. f5 Nbd7 15. fxe6 fxe6 16. Nf4 Qa5 17. Kb1 Nxe5 18. Nfxe6 Nxg4 19. Bf4 Ne4 20. Qe2 Ngf2 21. Qh5+ Ke7 22. Qe5 Ng4 23. Qf5 Ngf6 24. Bc7 Qa4 25. Nf4 Bc8 26. Nxd5+ Kf7 27. Qf4 |
| ECO B30 in 1993 play it! wahls matthias defeats black's filipenko alexan in 67 moves | 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. c3 a6 6. Ba4 b5 7. Bc2 Bb7 8. Re1 Ng6 9. d4 cxd4 10. cxd4 Bb4 11. Nc3 O-O 12. Bg5 f6 13. Bd2 Nce7 14. h4 f5 15. h5 Nh8 16. d5 Nf7 17. Bb3 Bc5 18. exf5 Nxf5 19. Ne4 Ba7 20. dxe6 dxe6 21. Bxe6 N5d6 22. Nxd6 Qxd6 23. Bc3 Qf4 24. Qd2 Qxd2 25. Nxd2 Kh8 26. Bb3 b4 27. Bxb4 Nd6 28. Re2 Rf6 29. Bc3 Rf5 30. h6 Nf7 31. Bxg7+ Kg8 32. Rae1 Bc6 33. Nf3 Bc5 34. Re5 |
| ECO B33 in 1989 play it! wahls matthias defeats black's miralles gilles in 65 moves | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 7. Nde2 e6 8. O-O Be7 9. Bb3 O-O 10. Bg5 Rd8 11. Kh1 Ne5 12. f4 Neg4 13. Qe1 Qc5 14. Nc1 h6 15. Nd3 Qc7 16. Bh4 Ne8 17. Bg3 a6 18. Qe2 Ngf6 19. f5 exf5 20. e5 dxe5 21. Nxe5 Bd6 22. Nxf7 Bxg3 23. Nxd8+ Kh7 24. Ne6 Bxe6 25. Qxe6 Bxh2 26. Nd5 Nxd5 27. Qxf5+ Kh8 28. Qf8+ Kh7 29. Bxd5 Nf6 30. Qxa8 Nxd5 31. Qe8 Nf6 32. Rxf6 gxf6 33. Rd1 |
| ECO B28 in 1987 play it! wahls matthias defeats black's de souza mauro g in 105 moves | 1. e4 c5 2. Nf3 a6 3. c3 e6 4. d4 d5 5. e5 Nc6 6. Bd3 Nge7 7. dxc5 Ng6 8. Bxg6 hxg6 9. Be3 Be7 10. Nbd2 g5 11. g4 f5 12. Rg1 f4 13. Bd4 b6 14. cxb6 Nxd4 15. cxd4 Qxb6 16. Qb3 Qc7 17. Qd3 Kf7 18. Kf1 a5 19. Kg2 Ba6 20. Qb1 g6 21. Rc1 Qb6 22. Rc3 Rhc8 23. Qc2 Rxc3 24. Qxc3 Rc8 25. Qb3 Qc7 26. Qa4 Be2 27. Re1 Bxf3+ 28. Nxf3 Rb8 29. Re2 Rb4 30. Rc2 Rxa4 31. Rxc7 Rxa2 32. Nxg5+ Ke8 33. Nxe6 Rxb2 34. Nxf4 Bh4 35. Nxg6 Bxf2 36. e6 Bxd4+ 37. Kf3 Rb3+ 38. Kf4 Rb8 39. Re7+ Kd8 40. Rd7+ Ke8 41. Rxd5 Bc3 42. Rf5 Bb4 43. e7 Bd6+ 44. Kg5 a4 45. h4 a3 46. Ra5 Bb4 47. Ra4 Kf7 48. Kh6 Rb6 49. Kh7 Bd6 50. g5 Rb4 51. Rxa3 Rxh4+ 52. Nxh4 Bxa3 53. g6+ |
| ECO B52 in 1986 play it! wahls matthias defeats black's zuniga j in 77 moves | 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. O-O Ngf6 6. Qe2 g6 7. c3 e5 8. d4 cxd4 9. cxd4 Bg7 10. dxe5 dxe5 11. Rd1 Qc7 12. Nc3 O-O 13. Bg5 Qb8 14. Rd2 h6 15. Bh4 g5 16. Bg3 a6 17. Rad1 Qc7 18. Ne1 Rfe8 19. Nc2 Nc5 20. f3 Ne6 21. Ne3 Nf4 22. Qe1 Bf8 23. Nf5 Rad8 24. Bf2 Kh7 25. g3 Nh3+ 26. Kg2 Nxf2 27. Qxf2 Rxd2 28. Qxd2 Bb4 29. h4 Rg8 30. hxg5 Rxg5 31. Rh1 Nh5 32. Nd5 Bxd2 33. Nxc7 Bb4 34. Nd5 Bf8 35. Kf2 Kg6 36. f4 exf4 37. gxf4 Rg4 38. Rxh5 Kxh5 39. Nf6+ |
| ECO B57 in 1991 play it! wahls matthias defeats black's hausner ivan in 69 moves | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Qe2 O-O 9. O-O-O a6 10. Bb3 Qe8 11. Rhg1 Nd7 12. Qh5 Nc5 13. g4 Nxb3+ 14. axb3 f6 15. Qxe8 Rxe8 16. f4 Nxd4 17. Bxd4 b5 18. f5 b4 19. Na4 Bb7 20. Nb6 e5 21. Nxa8 Rxa8 22. Bc5 Bxe4 23. Bxd6 Bd8 24. Bxb4 Rc8 25. Rd2 Bb6 26. Rg3 h5 27. Re2 h4 28. Rh3 Bh1 29. Be1 e4 30. Bxh4 Bf3 31. Rxf3 exf3 32. Re1 Rd8 33. Rf1 Be3+ 34. Kb1 Bf4 35. h3 |
| ECO C54 in 1982 play it! wahls matthias defeats black's christensen jan in 41 moves | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Nbd2 a6 7. Bb3 O-O 8. O-O Ba7 9. Re1 Be6 10. Nf1 Qd7 11. h3 Rae8 12. Bc2 Ne7 13. Ng3 Bxh3 14. gxh3 Qxh3 15. d4 Ng4 16. Qd3 exd4 17. cxd4 f5 18. exf5 Nxf5 19. Rxe8 Rxe8 20. Qxf5 Bxd4 21. Qd5+ |
| ECO C69 in 1985 play it! wahls matthias defeats black's brunner lucas in 81 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 Bg4 7. c3 Bd6 8. Nbd2 Nh6 9. Qb3 b6 10. h3 Bh5 11. Re1 Qe7 12. Qc4 Qd7 13. dxe5 fxe5 14. Ng5 b5 15. Qb3 c5 16. c4 Nf7 17. Nf1 Nxg5 18. Bxg5 Bf7 19. Ne3 O-O 20. Qd3 Rab8 21. b3 Be6 22. Bh4 Qf7 23. Rac1 Qg6 24. Bg3 Rfd8 25. Rcd1 h6 26. Qc2 Qe8 27. Qc3 Bd7 28. Nf5 Qe6 29. f4 Bf8 30. fxe5 bxc4 31. bxc4 Bc6 32. Rd5 Bxd5 33. cxd5 Rxd5 34. exd5 Qxf5 35. Qc4 Qg6 36. d6+ Kh7 37. dxc7 Rc8 38. Qf4 Rxc7 39. e6 Rb7 40. Qf3 Re7 41. Bd6 |
| ECO C95 in 1992 play it! wahls matthias defeats black's umar k pak in 69 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. a4 Bb7 12. Bc2 c5 13. d5 Re8 14. b3 Nb6 15. Qe2 c4 16. bxc4 Nxc4 17. Bd3 Qc7 18. Bxc4 bxc4 19. Nfd2 Rac8 20. Na3 Nxd5 21. exd5 Bxd5 22. Rb1 Qc6 23. Qf1 Bd8 24. Nc2 Be6 25. Nb4 Qxa4 26. Ne4 Be7 27. Rd1 a5 28. Nd5 Bxd5 29. Rxd5 Qc2 30. Nd2 Qxc3 31. Qd1 Rc5 32. Qa4 Rxd5 33. Qxe8+ Bf8 34. Rb7 Qxc1+ 35. Kh2 |
| ECO C60 in 1990 play it! wahls matthias defeats black's polgar zsuzsa gm in 93 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. d4 exd4 5. Bg5 Be7 6. Bxe7 Ngxe7 7. Nxd4 d5 8. Nc3 dxe4 9. Bxc6+ Nxc6 10. Nxc6 Qxd1+ 11. Rxd1 bxc6 12. Nxe4 Bf5 13. O-O Bxe4 14. Rfe1 f5 15. f3 Rd8 16. fxe4 f4 17. Rxd8+ Kxd8 18. Kf2 Ke7 19. Rd1 g5 20. Kf3 h5 21. Rd4 Rb8 22. b3 a5 23. Ra4 Rb5 24. h4 Ke6 25. Rc4 Kd6 26. a4 Re5 27. Rd4+ Ke7 28. Rd2 gxh4 29. Kxf4 Re6 30. e5 Rg6 31. Kf5 Rg3 32. e6 c5 33. c4 Ke8 34. Kf6 Rxb3 35. Rd5 Rb2 36. Rxh5 Rf2+ 37. Ke5 Rxg2 38. Rxh4 Re2+ 39. Kd5 Ra2 40. Rh8+ Ke7 41. Rh7+ Kd8 42. Rd7+ Kc8 43. Kc6 Re2 44. Rxc7+ Kd8 45. Rd7+ Ke8 46. Kd6 Rd2+ 47. Kxc5 |
| ECO C95 in 1988 play it! wahls matthias defeats black's ryan joseph in 73 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. b3 Bf8 14. d5 g6 15. Nf1 Nh5 16. g3 c5 17. N3h2 Bg7 18. Ng4 Kh8 19. Nh6 Rf8 20. a4 Ndf6 21. axb5 axb5 22. Rxa8 Bxa8 23. Qe2 Qd7 24. Ng4 Ne8 25. Bd2 f5 26. exf5 gxf5 27. Nge3 f4 28. Qxh5 Nf6 29. Qh4 fxe3 30. Nxe3 Qf7 31. c4 b4 32. g4 h5 33. g5 Rg8 34. Kh2 Ne8 35. Bf5 Nc7 36. g6 Qf8 37. Qxh5+ |
| ECO C89 in 1987 play it! wahls matthias defeats black's hegeler frank in 57 moves | 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 d6 9. a4 Bg4 10. h3 Bxf3 11. Qxf3 Na5 12. Ba2 c5 13. d3 b4 14. cxb4 cxb4 15. Nd2 Rb8 16. Nb3 Nd7 17. Nxa5 Qxa5 18. Bc4 Bd8 19. Qf5 b3 20. Rd1 Nc5 21. Be3 Qc7 22. d4 exd4 23. Bxd4 Rb4 24. Rac1 Qe7 25. e5 Nb7 26. Bxa6 dxe5 27. Qxe5 Qxe5 28. Bxe5 Re8 29. Rc8 |
| ECO C66 in 1986 play it! wahls matthias defeats black's rojas sepulveda in 81 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7 7. Bxc6 Bxc6 8. Qd3 Nd7 9. Be3 exd4 10. Nxd4 O-O 11. f4 Bf6 12. Nxc6 bxc6 13. Rad1 Nb6 14. Bd4 Re8 15. Ne2 c5 16. Bxf6 Qxf6 17. Nc3 Qe6 18. Rf3 a5 19. Rh3 h6 20. a4 Rab8 21. Rg3 Rf8 22. b3 f5 23. Re1 fxe4 24. Rxe4 Qf7 25. h3 d5 26. Re5 d4 27. Nb5 Nd7 28. Re1 Nf6 29. Rf3 Rfe8 30. Re5 Nd7 31. Rxe8+ Rxe8 32. Nxc7 Re1+ 33. Rf1 Re3 34. Qa6 Nf6 35. Qxa5 Re7 36. Na6 Re2 37. Qxc5 Ne4 38. Qxd4 Ng3 39. Rd1 Qb7 40. Qd8+ Kh7 41. Qd3+ |
| ECO C80 in 1987 play it! wahls matthias defeats black's rhodin christian in 63 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Nc5 10. c3 Bg4 11. Bc2 Ne6 12. Re1 Bc5 13. Nb3 Ba7 14. Be3 Bxe3 15. Rxe3 Ne7 16. h3 Bf5 17. Nfd4 Bxc2 18. Qxc2 O-O 19. Rf1 Rc8 20. Nxe6 fxe6 21. Nc5 Nf5 22. Rd3 Qe7 23. b4 a5 24. Qe2 g5 25. f4 Ng7 26. Rdf3 axb4 27. cxb4 gxf4 28. Rxf4 Rxf4 29. Rxf4 Rf8 30. Rxf8+ Qxf8 31. Qxb5 Qf4 32. Qb8+ |
| ECO C97 in 1991 play it! wahls matthias defeats black's unzicker wolfgan in 79 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Bd7 13. Nf1 Nc4 14. Ne3 Nxe3 15. Bxe3 Rfc8 16. Rc1 Bc6 17. Nd2 cxd4 18. cxd4 Qb7 19. Qf3 Bd8 20. Bg5 h6 21. Bh4 Be8 22. Bg3 Qe7 23. Qd3 Ba5 24. a3 Nd7 25. Rcd1 Nf8 26. Bb1 Ra7 27. f4 Bb6 28. Nf3 exd4 29. Kh2 Rc4 30. Ba2 Rac7 31. e5 Rc8 32. f5 d5 33. Bb1 b4 34. f6 Qe6 35. fxg7 Ng6 36. Nh4 bxa3 37. Nf5 axb2 38. Qd2 Rc1 39. Nxh6+ Kxg7 40. Nf5+ |
| ECO C69 in 1988 play it! wahls matthias defeats black's boudre jean in 67 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 Bg4 7. c3 exd4 8. cxd4 c5 9. h3 Bh5 10. Qb3 cxd4 11. Qxb7 Bxf3 12. Qc6+ Kf7 13. gxf3 Bd6 14. f4 Ne7 15. Qc4+ Kf8 16. Qxd4 Ng6 17. Rd1 Qc8 18. f5 Ne5 19. Qc3 g5 20. Na3 Rg8 21. Kg2 g4 22. h4 Ke7 23. Nc4 g3 24. f3 Nxc4 25. Qxc4 Rb8 26. b3 Rb4 27. Qc3 Qb7 28. Bb2 Be5 29. Qd3 Qb6 30. Qd7+ Kf8 31. Qd8+ Kg7 32. Qd2 Rd8 33. Qe1 Rxd1 34. Rxd1 |
| ECO C95 in 1991 play it! wahls matthias defeats black's vlassis georgios in 45 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. a4 Bb7 12. Bc2 c5 13. Nbd2 Re8 14. d5 c4 15. b4 cxb3 16. Nxb3 bxa4 17. Rxa4 Nb6 18. Ra2 Nc4 19. Bd3 Qc7 20. Qe2 Rec8 21. Nfd2 Bxd5 22. exd5 Nxd5 23. Qe4 |
| ECO C68 in 1991 play it! wahls matthias defeats black's nunn john d m en in 115 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bd6 6. d4 exd4 7. Qxd4 f6 8. Be3 Ne7 9. Nbd2 Be6 10. Rfd1 O-O 11. Nc4 Bb4 12. a3 Qxd4 13. Nxd4 Bxc4 14. axb4 Rfd8 15. Bf4 Rac8 16. Nf3 Rxd1+ 17. Rxd1 Be6 18. Nd4 Bc4 19. f3 Kf8 20. Kf2 Ng6 21. Bg3 Ne5 22. f4 Ng4+ 23. Kf3 Nh6 24. h3 f5 25. exf5 Bd5+ 26. Kf2 Be4 27. c3 Bxf5 28. Bh2 Kf7 29. Nf3 Re8 30. g4 Bc8 31. f5 g6 32. fxg6+ Kxg6 33. Bxc7 Nf7 34. Bf4 h5 35. Rg1 hxg4 36. hxg4 Re4 37. Nh4+ Kg7 38. Kf3 Re8 39. g5 Ne5+ 40. Bxe5+ Rxe5 41. Kf4 Re8 42. Nf3 Rf8+ 43. Ke4 Be6 44. Nd4 Bd5+ 45. Ke5 Kg6 46. Rg3 Rd8 47. Rg1 Rf8 48. Kd6 Rf2 49. b3 Rd2 50. Kc7 Rd3 51. Ne2 Rf3 52. Kxb7 Bxb3 53. Rc1 Kxg5 54. Nd4 Rf7+ 55. Kxa6 Bd5 56. Kb6 Rf6 57. Rg1+ Kh5 58. Kc5 |
| ECO C55 in 1982 play it! wahls matthias defeats black's brynell stellan in 81 moves | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 d6 6. Bb3 O-O 7. O-O Bg4 8. Nbd2 d5 9. Qe2 Re8 10. h3 Bh5 11. Re1 Bf8 12. Nf1 Bg6 13. Bc2 b5 14. Bg5 b4 15. Bxf6 gxf6 16. Ba4 Re6 17. exd5 Qxd5 18. Bb3 Qxd3 19. Bxe6 fxe6 20. Qxd3 Bxd3 21. Rac1 Bd6 22. Ng3 f5 23. cxb4 Nxb4 24. Nxe5 Bb5 25. a3 Nd5 26. Nc4 Kf7 27. Ne2 e5 28. f4 e4 29. Nxd6+ cxd6 30. Nd4 Bd7 31. g3 Kf6 32. Red1 Ne3 33. Rd2 Be6 34. Rc6 Rd8 35. Rc7 Rg8 36. Rxh7 Nc4 37. Rg2 Bd5 38. Rh6+ Kf7 39. b3 Ne3 40. Re2 Nd1 41. Rxd6 |
| ECO C78 in 1995 play it! wahls matthias defeats black's stern rene in 121 moves | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. c3 d6 8. a4 Bb7 9. d4 Bb6 10. Bg5 h6 11. Bxf6 Qxf6 12. Bd5 O-O 13. Na3 Rfb8 14. Nc2 bxa4 15. Rxa4 a5 16. Re1 Re8 17. Ne3 Rab8 18. Ng4 Qg6 19. Nh4 Qg5 20. Nf5 exd4 21. h4 Qg6 22. cxd4 Ne7 23. Bxb7 Rxb7 24. Nge3 Rbb8 25. Qf3 Nxf5 26. Nxf5 Re6 27. Re3 Rbe8 28. Qf4 Kh8 29. Raa3 Qh7 30. Rad3 Rf6 31. Qg4 g6 32. Ng3 h5 33. Qd7 Rfe6 34. Re2 Qg7 35. Red2 R6e7 36. Qb5 Qf6 37. Nxh5 gxh5 38. Qxh5+ Kg7 39. Rf3 Qg6 40. Rg3 Qxg3 41. fxg3 Rxe4 42. Qg5+ Kf8 43. Qf6 R8e6 44. Qh8+ Ke7 45. Kh2 Rf6 46. d5 Rf1 47. Qh5 Bg1+ 48. Kh3 Bc5 49. Kh2 Bg1+ 50. Kh3 Bc5 51. Rd1 Rf2 52. Qg5+ Kd7 53. h5 Be3 54. Qg7 Rf5 55. g4 Bf2 56. g3 Rf3 57. Rd3 Be3 58. Qc3 f6 59. Qc6+ Kd8 60. Rb3 Rb4 61. Rc3 |