[Event "ch-Frankfurt A"] [Site "Frankfurt"] [Date "2023.05.22"] [Round "4"] [White "Boscher, Hans"] [Black "Grinberg, Igor"] [Result "1/2-1/2"] [ECO "B12"] [WhiteElo "1648"] [BlackElo "1428"] [PlyCount "31"] [EventDate "2023.04.24"] [EventType "swiss"] [EventCountry "GER"] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O Ne7 7. Be3 c5 8. c3 Nc6 9. Nbd2 Qb6 10. Qb3 Be7 11. Qxb6 axb6 12. a3 c4 13. Bg5 Bxg5 14. Nxg5 h6 15. Ngf3 b5 16. b4 1/2-1/2