| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Barbero vs P Ricardi |
| 0-1 | 44 |
1985 |
ARG-ch | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 2. Granda-Zuniga vs P Ricardi |
| ½-½ | 11 |
1987 |
Rio de Janeiro | E26 Nimzo-Indian, Samisch |
| 3. Azmaiparashvili vs P Ricardi |
| 1-0 | 50 |
1996 |
32nd ol Yerevan ARM | E32 Nimzo-Indian, Classical |
| 4. V Gaprindashvili vs P Ricardi |
| 1-0 | 66 |
1999 |
Ubeda Open | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 5. M Labollita vs P Ricardi |
 | 0-1 | 28 |
2003 |
Buenos Aires Intercoop 29th | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 6. L Perdomo vs P Ricardi |
| ½-½ | 18 |
2005 |
Argentinean Championship | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 7. J Gonzalez vs P Ricardi |
| ½-½ | 43 |
2006 |
37th Chess Olympiad | E41 Nimzo-Indian |
| 8. L Liascovich vs P Ricardi |
| 0-1 | 25 |
2008 |
Argentine Championship | E32 Nimzo-Indian, Classical |