Event: Autumn OTB Division 3

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Opponent Rating Result
Neil A Oddie 1698 ½ - ½
David Boulden 1735 ½ - ½
Tudor Rickards 1713 1 - 0
Robin Yeung 1855 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1850 = (7001 + 400 * (1 - 0)) / 4)

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