Event: Open

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Opponent Rating Result
David F Hill 2052 ½ - ½
Raimund Klein 1967 0 - 1
Svetlana Sucikova 2148 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1789 = (6167 + 400 * (0 - 2)) / 3)

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