WhiteEloBlackEloECOYrRes.#   
  Koch Ostermeyer, P D79 1965 1-0 34 Game overview Download PGN
  Koch, W 2315 Ostermeyer, P 2400 E16 1995 ½-½ 13 Game overview Download PGN
  Koch, C 1949 Ostermeyer, P 2291 B50 2019 0-1 52 Game overview Download PGN
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