| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Santos vs J Sunye Neto |
| 1-0 | 46 | 2001 | Pre-Continental g/25,10 | B21 Sicilian, 2.f4 and 2.d4 |
| 27. M Santos vs E Matsuura |
| 0-1 | 29 | 2002 | Sao Paulo-ch 3rd leg | D47 Queen's Gambit Declined Semi-Slav |
| 28. M Santos vs Mecking |
| 0-1 | 54 | 2003 | Jogos Abertos do Interior | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 29. M Santos vs E Matsuura |
| 0-1 | 34 | 2003 | Sao Paulo-ch Absoluto | E94 King's Indian, Orthodox |
| 30. M Santos vs J Rosito |
| 0-1 | 54 | 2003 | Sao Paulo Itau Cup 7th | E26 Nimzo-Indian, Samisch |
| 31. M Crosa Coll vs M Santos |
| 1-0 | 47 | 2003 | Sao Paulo Itau Cup 7th | C50 Giuoco Piano |
| 32. G Soppe vs M Santos |
| ½-½ | 32 | 2003 | Sao Paulo Itau Cup 7th | A09 Reti Opening |
| 33. M Santos vs J Gomez Baillo |
| ½-½ | 25 | 2003 | Sao Paulo Itau Cup 7th | D27 Queen's Gambit Accepted, Classical |
| 34. M Santos vs A Fier |
| 0-1 | 42 | 2004 | VI Comunic CXSP | A65 Benoni, 6.e4 |
| 35. A Giaccio vs M Santos |
| 1-0 | 64 | 2004 | Sao Paulo Communic 5th | C78 Ruy Lopez |
| 36. F de Cresce El Debs vs M Santos |
| 1-0 | 47 | 2004 | Regina Helena Marques 2nd | D12 Queen's Gambit Declined Slav |
| 37. M Santos vs E Matsuura |
| 0-1 | 39 | 2004 | Sao Paulo Communic 8th | E80 King's Indian, Samisch Variation |
| 38. M Santos vs R Molina |
| 1-0 | 42 | 2005 | BRA sf | A85 Dutch, with c4 & Nc3 |
| 39. M Santos vs L Bronstein |
| 0-1 | 39 | 2005 | San Bernardo ITT | E40 Nimzo-Indian, 4.e3 |
| 40. J F Cubas vs M Santos |
| 0-1 | 50 | 2005 | San Bernardo ITT | C55 Two Knights Defense |
| 41. G Vescovi vs M Santos |
| 1-0 | 61 | 2005 | Sao Paulo Itau Cup 9th | C84 Ruy Lopez, Closed |
| 42. D Lima vs M Santos |
| 1-0 | 61 | 2005 | Brazilian Championship | C46 Three Knights |
| 43. M Santos vs D Di Berardino |
| 1-0 | 22 | 2005 | Brazilian Championship | E77 King's Indian |
| 44. V Chemin vs M Santos |
| 1-0 | 27 | 2005 | Brazilian Championship | A09 Reti Opening |
| 45. M Santos vs L Coelho |
| ½-½ | 21 | 2005 | Brazilian Championship | D47 Queen's Gambit Declined Semi-Slav |
| 46. F Cavalcanti vs M Santos |
| ½-½ | 20 | 2005 | Brazilian Championship | A09 Reti Opening |
| 47. R Disconzi da Silva vs M Santos |
| ½-½ | 53 | 2005 | Brazilian Championship | D34 Queen's Gambit Declined, Tarrasch |
| 48. M Santos vs E Matsuura |
| ½-½ | 13 | 2005 | Brazilian Championship | D20 Queen's Gambit Accepted |
| 49. M Santos vs A Fier |
| ½-½ | 18 | 2005 | Brazilian Championship | E29 Nimzo-Indian, Samisch |
| 50. G Milos vs M Santos |
| 1-0 | 28 | 2005 | Brazilian Championship | C63 Ruy Lopez, Schliemann Defense |
Kibitzing
