[Event "BOARD 0009"] [Site "schachportal.net"] [Date "2025.12.14"] [Round "-"] [White "KOEBI"] [Black "SEMMEL_"] [Result "*"] 1. d4 Nf6 2. Nc3 d5 3. Nf3 g6 4. e3 Bg7 5. Bd3 O-O 6. e4 *