Jean Luc Costa
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| 55th Biel Master Open | 07/13/2022 | 2348 | Switzerland |
| Biel MTO op | 07/18/2005 | 2236 | Switzerland |
| Oberliga Baden 0405 | 10/24/2004 | 1881 | Germany |
| SUI-chT | 03/??/2004 | 2314 | Switzerland |
Most Played Openings as White
| ECO | Opening | Games |
| E90 | King's Indian, 5.Nf3 | 8 games |
| D03 | Torre attack (Tartakower variation) | 6 games |
| E20 | Nimzo-Indian defence | 6 games |
| D12 | Queen's Gambit Declined Slav, 4.e3 Bf5 | 5 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C41 | Philidor's defence | 21 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 6 games |
| A07 | Reti, King's Indian attack (Barcza system) | 6 games |
| A60 | Benoni defence | 5 games |
Switzerland
Male
FIDE ID:

Germany