| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 76. R Costantini vs E Prie |
| ½-½ | 16 | 2003 | Valle d'Aosta Open | B32 Sicilian |
| 77. F Galli vs R Costantini |
| 0-1 | 44 | 2003 | Bratto Open-A | B95 Sicilian, Najdorf, 6...e6 |
| 78. R Costantini vs Milov |
| 0-1 | 26 | 2003 | Bratto Open-A | B20 Sicilian |
| 79. M Bonetti vs R Costantini |
| 0-1 | 41 | 2003 | Bratto Open-A | B90 Sicilian, Najdorf |
| 80. R Costantini vs A Ricci |
| 1-0 | 41 | 2003 | Bratto Open-A | B42 Sicilian, Kan |
| 81. L Qendro vs R Costantini |
| 1-0 | 34 | 2003 | Bratto Open-A | D31 Queen's Gambit Declined |
| 82. R Costantini vs F Ranieri |
| 0-1 | 25 | 2003 | Bratto Open-A | C11 French |
| 83. U Scotti vs R Costantini |
| 0-1 | 21 | 2003 | Bratto Open-A | D04 Queen's Pawn Game |
| 84. R Costantini vs A De Santis |
| 1-0 | 41 | 2003 | Bratto Open-A | B33 Sicilian |
| 85. R Costantini vs B Belotti |
| 1-0 | 44 | 2003 | Bratto Open-A | B42 Sicilian, Kan |
| 86. R Costantini vs K Pircher |
| 1-0 | 29 | 2003 | Cesenatico Open | C11 French |
| 87. C Popa vs R Costantini |
| ½-½ | 42 | 2003 | Cesenatico Open | B22 Sicilian, Alapin |
| 88. R Costantini vs E Maahs |
| 1-0 | 43 | 2003 | Cesenatico Open | B01 Scandinavian |
| 89. M Mueller vs R Costantini |
| 0-1 | 19 | 2003 | Cesenatico Open | A58 Benko Gambit |
| 90. R Costantini vs C Di Caro |
| ½-½ | 19 | 2003 | Cesenatico Open | A07 King's Indian Attack |
| 91. I Naumkin vs R Costantini |
| ½-½ | 12 | 2003 | Cesenatico Open | D15 Queen's Gambit Declined Slav |
| 92. R Costantini vs M Roeder |
| ½-½ | 14 | 2003 | Cesenatico Open | B92 Sicilian, Najdorf, Opocensky Variation |
| 93. S Gromovs vs R Costantini |
| 1-0 | 32 | 2003 | Cesenatico Open | D15 Queen's Gambit Declined Slav |
| 94. R Costantini vs C Yeuillaz |
| 0-1 | 26 | 2003 | Cesenatico Open | C10 French |
| 95. G Aglietti vs R Costantini |
| 0-1 | 31 | 2004 | ITA-chT A1 34th | A07 King's Indian Attack |
| 96. G Aglietti vs R Costantini |
| 0-1 | 32 | 2005 | Bratto Open-A | D45 Queen's Gambit Declined Semi-Slav |
| 97. R Costantini vs M Cebalo |
| 0-1 | 38 | 2005 | Bratto Open-A | B50 Sicilian |
| 98. W Temi vs R Costantini |
| 0-1 | 40 | 2005 | Bratto Open-A | B50 Sicilian |
| 99. R Costantini vs A Hunt |
| 0-1 | 97 | 2005 | Bratto Open-A | B22 Sicilian, Alapin |
| 100. A Bonanno vs R Costantini |
| 0-1 | 40 | 2005 | Bratto Open-A | B90 Sicilian, Najdorf |
Kibitzing
