Event: Division 3

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Opponent Rating Result
David P Price 1647 0 - 1
Tony K Blades 1571 ½ - ½
Thomas Francis 1598 0 - 1
Henry Atkinson 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1104 = (4816 + 400 * (1 - 2)) / 4)

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