Event: Division 2

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Opponent Rating Result
Peter Rose 1512 ½ - ½
Peter J R Oliver 1619 ½ - ½
George McCumiskey 764 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1432 = (3895 + 400 * (1 - 0)) / 3)

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