Male
FIDE ID:
Sipke Ernst
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| ch-NED KO 2026 | 07/04/2026 | 2515 |  Netherlands |
| TCh-BEL 2025-26 | 09/28/2025 | 2275 |  Belgium |
| Dutch League 2025-26 | 09/20/2025 | 2345 | Netherlands |
| 2nd Bundesliga Nord 25-26 | 09/27/2025 | 2373 |  Germany |
Most Played Openings as White
| ECO | Opening | Games |
| D85 | Gruenfeld, exchange variation | 34 games |
| E97 | King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation) | 24 games |
| D30 | Queen's gambit declined | 19 games |
| E00 | Queen's pawn game | 18 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C83 | Ruy Lopez, open, classical defence | 24 games |
| C77 | Ruy Lopez, Morphy defence | 24 games |
| C80 | Ruy Lopez, open (Tarrasch) defence | 23 games |
| C45 | Scotch game | 21 games |
