Event: Open County Championship

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Opponent Rating Result
Paul McMahon 1918 ½ - ½
Benjamin PQ Collinson 1986 ½ - ½
Paul F Habershon 1978 ½ - ½
Konrad Scheffler 1922 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1951 = (7804 + 400 * (0 - 0)) / 4)

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