J. Concha
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Sevilla op | ??/??/1990 | 1105 |  Spain |
Most Played Openings as White
| ECO | Opening | Games |
| E61 | King's Indian defence, 3.Nc3 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| Name: | J. Concha |
| Federation: |  |
| Years: | 1990 - 1990 |
| Total Games: | 1 |
| Wins: | 0 (0 %) |
| Draws: | 0 (0 %) |
| Losses: | 1 (100 %) |
| Score: | 0 % |
Games played by J. Concha
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Concha, J | Arencibia, W | 2425 | 0-1  |
36 | E61 | 1990 | Sevilla op |
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