Event: County Individual

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Opponent Rating Result
Peter N Walker 0 ½ - ½
Paul Spencer 1675 ½ - ½
Alexander Richards 1765 ½ - ½
Raymond J Ilett 1938 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1345 = (5378 + 400 * (0 - 0)) / 4)

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