White Elo Black Elo ECO Year Res. #       Koellner, Ruben Gideon 2482 Tan, Ralph 2016 D02 2024 ½-½ 64 Slovineanu, Viacheslav 2412 Tan, Ralph 2004 D02 2024 1-0 31 Melkumyan, Hrant 2640 Tan, Ralph 2004 D02 2024 1-0 35 Xu, Xiangyu 2623 Tan, Ralph 2004 D02 2024 1-0 46 Kaminski, V 2247 Tan, Ralph 2004 D02 2024 0-1 44 Rian, Kapriaga 2089 Tan, Ralph 2004 D02 2024 0-1 33 Serra Canals, Oriol 2118 Tan, Ralph 1990 D02 2024 1-0 38 Mitrabha, Guha 2509 Tan, Ralph 2037 D02 2025 1-0 40 Calderon, Zachary 2033 Tan, Ralph 2043 D02 2025 0-1 52 Page 1
Koellner, Ruben Gideon (2482) - Tan, Ralph (2016) - Titled Tue 23rd Jan Late (11), chess.com INT, 2024 D02 1.d4 d5 2.Nf3 e6 3.e3 Be7 4.Nbd2 Nf6 5.Bd3 O-O 6.O-O Nbd7 7.Ne5 c5 8.c3 Bd6 9.f4 b6 10.Qf3 Bb7 11.g4 cxd4 12.exd4 Ne4 13.Nxe4 dxe4 14.Bxe4 Bxe4 15.Qxe4 Nf6 16.Qg2 Bxe5 17.fxe5 Nd5 18.Bd2 Rc8 19.Rf3 b5 20.Raf1 a5 21.a3 Qb6 22.Qf2 Rc7 23.h4 Qb7 24.h5 b4 25.axb4 axb4 26.h6 g6 27.Rc1 Rfc8 28.Qf1 Qb6 29.Kh2 bxc3 30.bxc3 Qb2 31.Qg2 Ra7 32.Bg5 Ra2 33.Qxb2 Rxb2+ 34.Kg3 Kf8 35.c4 Nb6 36.Rcf1 Rc7 37.Bd8 Rd7 38.Bxb6 Rxb6 39.d5 exd5 40.cxd5 Ke8 41.e6 fxe6 42.Rf8+ Ke7 43.R1f7+ Kd6 44.dxe6 Rxf7 45.Rxf7 Kxe6 46.Rxh7 Kf6 47.Rc7 g5 48.Kf3 Kg6 49.h7 Rb8 50.Ke4 Re8+ 51.Kd5 Kf6 52.Rc1 Kg7 53.Rh1 Kh8 54.Rh5 Re1 55.Kd4 Rg1 56.Rxg5 Kxh7 57.Ke3 Rf1 58.Rf5 Rxf5 59.gxf5 Kg7 60.Ke4 Kf7 61.Kf4 Kf6 62.Ke4 Kf7 63.Ke5 Ke7 64.Ke4 Kf7 ½-½	Search games Games: 10666599 / Last update: 30 Jul 2025 GamePositionEndgames White Black Ignore colours ECO Year Result All 1-0 0-1 ½-½ Event Site Click below to set up a position to search for Set position Click the button below to select an endgame type
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