Koopmans, PerryFIDE ID 10317591Games0Wins0Draws1Losses0%ScorePeak rating1725Latest rating1725First seenJul 13, 2026Last seenJul 13, 2026Recent gamesDateWhiteResultBlackEventOpeningJul 13, 2026Guliyev1–0KoopmansAmsterdam Chess Festival 2026 - Groep CEnglish Opening: King's English Variation, Two Knights Variation, Keres Variation