Event: Div 2

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Opponent Rating Result
Stephen Lamont 141 ½ - ½
Ralph MA Allen 156 ½ - ½
Maurice J Staples 187 ½ - ½
Stephen Lamont 141 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

256 = (625 + 400 * (1 - 0)) / 4)

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