Event: 4-Board Division 2

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Opponent Rating Result
R Malcolm Hara 1634 0 - 1
Paul GE Carter 1689 ½ - ½
David J Gibson 1541 ½ - ½
Colin W Field 1468 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1583 = (6332 + 400 * (1 - 1)) / 4)

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