[Event "ch-Frankfurt A"] [Site "Frankfurt"] [Date "2023.04.24"] [Round "1"] [White "Sonntag, Chris"] [Black "Diehl, Stefan"] [Result "0-1"] [ECO "A80"] [WhiteElo "1142"] [BlackElo "1784"] [PlyCount "72"] [EventDate "2023.04.24"] [EventType "swiss"] [EventCountry "GER"] 1. d4 f5 2. Nc3 Nf6 3. Bf4 e6 4. e3 b6 5. Nf3 Bb7 6. Bc4 d5 7. Bb5+ c6 8. Be2 Bd6 9. Ng5 Qe7 10. Bh5+ g6 11. Be2 Nbd7 12. Nf3 Ne4 13. Nxe4 Bxf4 14. Ned2 Bc7 15. c3 c5 16. dxc5 bxc5 17. h4 Bc6 18. Ng5 h6 19. Ngf3 Rb8 20. b3 e5 21. g3 O-O 22. O-O Rbe8 23. Qc2 Qf6 24. Nh2 e4 25. Rad1 Kg7 26. Nb1 Qe5 27. Rfe1 Nf6 28. Na3 Rd8 29. Nb5 Bb8 30. a4 g5 31. h5 f4 32. exf4 gxf4 33. g4 Qg5 34. b4 f3 35. bxc5 Bxh2+ 36. Kxh2 Qh4+ 0-1