IMPORT by Mtabayee • Correspondence2021.11.07Oparin Grigoriy (RUS)Firouzja Alireza (FRA)Threefold repetition • DrawRuy Lopez: Berlin Defense1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 ... 28 moves Computer analysis availablePGN import by Mtabayee