IM Ruben Gideon Koellner Full name Ruben Gideon Koellner Born 1/1/2004 (age 20) Place of birth Federation Germany Profiles #737 World Ranking 2483 Classical 2431 Rapid 2339 Blitz Rating Bio Most Played Openings White Pieces Trompowsky Attack (44 games) Trompowsky Attack: Classical Defense (20 games) Indian Game: Knights Variation, East Indian Defense (20 games) Queen's Pawn Opening: Symmetrical Variation (12 games) Queen's Pawn Opening: Accelerated London System (10 games) Black Pieces Pirc Defense (76 games) Indian Game: Tartakower Defense (24 games) Old Indian Defense (16 games) Philidor Defense: Hanham, Lion Variation (13 games) Queen's Pawn Opening: English Rat Defense (11 games) Games Players Result Moves Year Ruben Gideon Koellner (2722) Guillermo Baches Garcia (2522) 1-0 42 2024 Ruben Gideon Koellner (2742) Kevin Davidson (2523) 1-0 32 2024 Ruben Gideon Koellner (2713) Viktor Shapiro (2514) 1-0 59 2024 Ruben Gideon Koellner (2712) Bruno Andre Leite Martins (2534) 1-0 51 2024 Ruben Gideon Koellner (2712) Daniel Hanwen Gong (2401) 1-0 70 2024 Ruben Gideon Koellner (2719) Valeriy Grinev (2550) 1-0 40 2024 Ruben Gideon Koellner (2426) Lazaro Lorenzo De La Riva (2337) 1-0 53 2024 Ruben Gideon Koellner (2426) Polina Shuvalova (2360) 1-0 45 2024 Ruben Gideon Koellner (2731) Atousa Pourkashiyan (2420) 1-0 70 2024 Ruben Gideon Koellner (2725) Evgueniy Taranenko (2394) 1-0 36 2024 Show All Games