Event: Division One

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Opponent Rating Result
Daniel M Lambourne 181 ½ - ½
Maurice J Staples 187 ½ - ½
John Mangwengwende 175 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

48 = (543 + 400 * (0 - 1)) / 3)

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