| Rojas Castro Ismael 1943 CRC Rp:2073 |
| Rd. | No.Ini. | | Nombre | Elo | FED | Pts. | Res. | M. |
| 1 | 104 | | Aguilar Rojas José Alfredo | 2097 | CRC | 6 | w 0 | 1 |
| 3 | 49 | | Araya Fuentes Cristian | 2051 | CRC | 1,5 | s ½ | 1 |
| 4 | 26 | | Vogt Kevin | 1875 | CRC | 2 | w ½ | 1 |
| 5 | 13 | | Buitrago Mosquera Antonio | 2075 | CRC | 1 | s 1 | 1 |
| 6 | 1 | | Valverde Vargas Allan | 1885 | CRC | 1,5 | w 1 | 1 |
| 7 | 121 | | Urbina Quirós Edwin | 2195 | CRC | 6 | w 0 | 1 |
| 8 | 90 | | Alfaro Raúl | 2017 | CRC | 1 | - 1K | 1 |
| 9 | 31 | | Núñez Valverde Jairo | 1985 | CRC | 5 | w 1 | 1 |
| Sánchez Garro Juan Gabriel 1885 CRC Rp:1914 |
| Rd. | No.Ini. | | Nombre | Elo | FED | Pts. | Res. | M. |
| 1 | 106 | | Vargas Villalobos Oliverio | 2015 | CRC | 0,5 | s 1 | 2 |
| 4 | 27 | | Incer Arias Manuel | 1832 | CRC | 5 | s 0 | 2 |
| 5 | 14 | | Flores Rojas Federico | 2004 | CRC | 4,5 | - 0K | 2 |
| 8 | 92 | | Ramírez Joan | 1932 | CRC | 7,5 | w 0 | 2 |
| 9 | 33 | | Rojas Vindas Mauricio | 1875 | CRC | 1,5 | s 1 | 2 |
| Castro Castillo Juan José 1820 CRC Rp:1930 |
| Rd. | No.Ini. | | Nombre | Elo | FED | Pts. | Res. | M. |
| 1 | 107 | | Bolaños Sánchez Huberth | 2004 | CRC | 3 | w ½ | 3 |
| 2 | 37 | | Campos Cerdas Jorge | 2046 | CRC | 4,5 | s ½ | 1 |
| 4 | 28 | | Moran Mike | 1710 | CRC | 5 | w 1 | 3 |
| 6 | 2 | | Valera Marco Antonio | 1600 | CRC | 0 | - 1K | 2 |
| 7 | 122 | | Montenegro Masis Pedro | 2169 | CRC | 3 | s 0 | 2 |
| 8 | 93 | | Acevedo Oscar | 1877 | CRC | 2,5 | s 0 | 3 |
| 9 | 35 | | Briceño López Adriana | 1773 | CRC | 0 | w 1 | 3 |
| Fernández Sánchez Ana Patricia 1876 CRC Rp:1812 |
| Rd. | No.Ini. | | Nombre | Elo | FED | Pts. | Res. | M. |
| 1 | 108 | | Rodríguez Arrieta María Elena | 1955 | CRC | 1 | - 0K | 4 |
| 2 | 38 | | Méndez Reyes Oscar | 1996 | CRC | 3 | w ½ | 2 |
| 3 | 50 | | Carranza Fernández Jorge | 2075 | CRC | 4 | w 0 | 2 |
| 5 | 15 | | Blando Chacón Erick | 1923 | CRC | 5 | s 0 | 3 |
| 9 | 36 | | Shukla Himanshu | 1600 | CRC | 0 | s 1 | 4 |
| Peña Varón Víctor 1851 CRC Rp:1988 |
| Rd. | No.Ini. | | Nombre | Elo | FED | Pts. | Res. | M. |
| 2 | 39 | | Gutiérrez Herrera Fernando | 1982 | CRC | 3 | s 0 | 3 |
| 3 | 51 | | Murillo Tsijli Manuel | 2090 | CRC | 5,5 | s 0 | 3 |
| 4 | 29 | | Torrentes Greivin | 1663 | CRC | 3 | s 1 | 4 |
| 5 | 16 | | Valdez Torres Nestor Josué | 1996 | CRC | 3 | w 1 | 4 |
| 6 | 3 | | Barboza Torres Mauricio | 1768 | CRC | 2 | w ½ | 3 |
| 7 | 124 | | Bogantes Robleto Karina | 1832 | CRC | 1,5 | w 1 | 3 |
| 8 | 94 | | Murillo Felix | 1870 | CRC | 2 | w 1 | 4 |
| Rodríguez Rodríguez José David 1711 CRC Rp:1780 |
| Rd. | No.Ini. | | Nombre | Elo | FED | Pts. | Res. | M. |
| 2 | 41 | | Arce Oviedo César | 1905 | CRC | 5 | w ½ | 4 |
| 3 | 54 | | Garro Reyes Juan Mauricio | 1962 | CRC | 1 | w 1 | 4 |
| 6 | 6 | | García Sánchez Barnal | 1827 | CRC | 6 | s 0 | 4 |
| 7 | 125 | | Morera Campos Yanory | 1772 | CRC | 3 | s 0 | 4 |
| 1. Ronda el 2012/06/09 a las 13:00 |
| M. | 19 | Naranjo "B" | Elo | - | 6 | Naranjo "A" | Elo | 1½:2½ |
| 6.1 | | | 1943 | - | | | Aguilar Rojas José Alfredo |
| 2097 | 0 - 1 |
| 6.2 | | | Sánchez Garro Juan Gabriel |
| 1885 | - | | | Vargas Villalobos Oliverio |
| 2015 | 1 - 0 |
| 6.3 | | | Castro Castillo Juan José |
| 1820 | - | | | 2004 | ½ - ½ |
| 6.4 | | | Fernández Sánchez Ana Patricia |
| 1876 | - | | | Rodríguez Arrieta María Elena |
| 1955 | - - + |
| 2. Ronda el 2012/06/10 a las 09:00 |
| M. | 11 | Santa Barbara B | Elo | - | 19 | Naranjo "B" | Elo | 2½:1½ |
| 8.1 | | | 2046 | - | | | Castro Castillo Juan José |
| 1820 | ½ - ½ |
| 8.2 | | | 1996 | - | | | Fernández Sánchez Ana Patricia |
| 1876 | ½ - ½ |
| 8.3 | | | Gutiérrez Herrera Fernando |
| 1982 | - | | | 1851 | 1 - 0 |
| 8.4 | | | 1905 | - | | | Rodríguez Rodríguez José David |
| 1711 | ½ - ½ |
| 3. Ronda el 2012/06/10 a las 15:00 |
| M. | 8 | TEC | Elo | - | 19 | Naranjo "B" | Elo | 2½:1½ |
| 10.1 | | | 2051 | - | | | 1943 | ½ - ½ |
| 10.2 | | | 2075 | - | | | Fernández Sánchez Ana Patricia |
| 1876 | 1 - 0 |
| 10.3 | | | 2090 | - | | | 1851 | 1 - 0 |
| 10.4 | | | Garro Reyes Juan Mauricio |
| 1962 | - | | | Rodríguez Rodríguez José David |
| 1711 | 0 - 1 |
| 4. Ronda el 2012/06/17 a las 14:00 |
| M. | 19 | Naranjo "B" | Elo | - | 23 | Los Amigos | Elo | 2½:1½ |
| 10.1 | | | 1943 | - | | | 1875 | ½ - ½ |
| 10.2 | | | Sánchez Garro Juan Gabriel |
| 1885 | - | | | 1832 | 0 - 1 |
| 10.3 | | | Castro Castillo Juan José |
| 1820 | - | | | 1710 | 1 - 0 |
| 10.4 | | | 1851 | - | | | 1663 | 1 - 0 |
| 5. Ronda el 2012/06/24 a las 14:00 |
| M. | 10 | Comité Deportes San José | Elo | - | 19 | Naranjo "B" | Elo | 2 : 2 |
| 9.1 | | | Buitrago Mosquera Antonio |
| 2075 | - | | | 1943 | 0 - 1 |
| 9.2 | | | 2004 | - | | | Sánchez Garro Juan Gabriel |
| 1885 | + - - |
| 9.3 | | | 1923 | - | | | Fernández Sánchez Ana Patricia |
| 1876 | 1 - 0 |
| 9.4 | | | Valdez Torres Nestor Josué |
| 1996 | - | | | 1851 | 0 - 1 |
| 6. Ronda el 2012/07/08 a las 14:00 |
| M. | 19 | Naranjo "B" | Elo | - | 24 | A.D.A. | Elo | 2½:1½ |
| 11.1 | | | 1943 | - | | | 1885 | 1 - 0 |
| 11.2 | | | Castro Castillo Juan José |
| 1820 | - | | | 1600 | + - - |
| 11.3 | | | 1851 | - | | | 1768 | ½ - ½ |
| 11.4 | | | Rodríguez Rodríguez José David |
| 1711 | - | | | 1827 | 0 - 1 |
| 7. Ronda el 2012/07/15 a las 14:00 |
| M. | 19 | Naranjo "B" | Elo | - | 7 | UCR | Elo | 1 : 3 |
| 9.1 | | | 1943 | - | | | 2195 | 0 - 1 |
| 9.2 | | | Castro Castillo Juan José |
| 1820 | - | | | 2169 | 0 - 1 |
| 9.3 | | | 1851 | - | | | 1832 | 1 - 0 |
| 9.4 | | | Rodríguez Rodríguez José David |
| 1711 | - | | | 1772 | 0 - 1 |
| 8. Ronda el 2012/07/22 a las 09:00 |
| M. | 13 | Asociación Fischer | Elo | - | 19 | Naranjo "B" | Elo | 2 : 2 |
| 10.1 | | | 2017 | - | | | 1943 | - - + |
| 10.2 | | | 1932 | - | | | Sánchez Garro Juan Gabriel |
| 1885 | 1 - 0 |
| 10.3 | | | 1877 | - | | | Castro Castillo Juan José |
| 1820 | 1 - 0 |
| 10.4 | | | 1870 | - | | | 1851 | 0 - 1 |
| 9. Ronda el 2012/07/22 a las 15:00 |
| M. | 19 | Naranjo "B" | Elo | - | 15 | San José Veteranos | Elo | 4 : 0 |
| 10.1 | | | 1943 | - | | | 1985 | 1 - 0 |
| 10.2 | | | Sánchez Garro Juan Gabriel |
| 1885 | - | | | 1875 | 1 - 0 |
| 10.3 | | | Castro Castillo Juan José |
| 1820 | - | | | 1773 | 1 - 0 |
| 10.4 | | | Fernández Sánchez Ana Patricia |
| 1876 | - | | | 1600 | 1 - 0 |