Guillermo Koch
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Villa Ballester op 52nd | 01/02/2002 | 1028 | Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| A08 | Reti, King's Indian attack | 1 games |
| A07 | Reti, King's Indian attack (Barcza system) | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A05 | Reti opening | 1 games |
| B07 | Pirc defence | 1 games |


Argentina