[Event "ch-Frankfurt A"] [Site "Frankfurt"] [Date "2023.06.19"] [Round "7"] [White "Ottenburg, Ralph"] [Black "Diehl, Stefan"] [Result "1/2-1/2"] [ECO "B12"] [WhiteElo "1936"] [BlackElo "1784"] [PlyCount "18"] [EventDate "2023.04.24"] [EventType "swiss"] [EventCountry "GER"] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. c3 e6 5. Be2 Nd7 6. Nf3 c5 7. O-O Ne7 8. Be3 Nc6 9. a3 Qb6 1/2-1/2