White Elo Black Elo ECO Year Res. #       Arriens, Klaus Koster, Frank B45 1989 ½-½ 15 Haas, Hans Koster, Frank A21 1989 1-0 28 Harders, Werner Koster, Frank A02 1989 0-1 26 Koster, Frank Boyens, Birger C00 1989 0-1 32 Koster, Frank Maeder, Torsten A02 1989 1-0 53 Koster, Frank Potrykus, Dierk A02 1989 0-1 6 Koster, Frank Reischl, Peter A02 1989 ½-½ 7 Potschka, Dieter Koster, Frank A21 1989 ½-½ 21 Schubbe, Bruno Koster, Frank D15 1989 0-1 27 Page 1
Arriens, Klaus - Koster, Frank - Schleswig Holstein-chA 44th, Schleswig Holstein, 1989 B45 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 Bb4 7.Bd3 Qa5 8.Nde2 d5 9.exd5 Nxd5 10.Bd2 Nxc3 11.Nxc3 O-O 12.a3 Qe5+ 13.Qe2 Bxc3 14.Bxc3 Qxe2+ 15.Bxe2 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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