Event: Division 3

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Opponent Rating Result
Robert J Purcell 1731 1 - 0
Nigel Morris 1536 ½ - ½
Deema Khunda 1472 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1846 = (4739 + 400 * (2 - 0)) / 3)

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