Event: Division Cup B

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Opponent Rating Result
Nigel Foster 1603 0 - 1
John Conway 1613 ½ - ½
Vassily M Sagyaman 1448 0 - 1
Terry F Clay 1267 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1383 = (5931 + 400 * (1 - 2)) / 4)

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