Event: Division 3

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Opponent Rating Result
Graham K Brown 1731 1 - 0
Tom A Cleverley 1536 ½ - ½
Simon Gathern 1606 0 - 1
Jeffrey Blumsom 1664 0 - 1
Richard J West 1665 ½ - ½
TW Anthony Pilkington 1568 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1562 = (9770 + 400 * (1 - 2)) / 6)

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