Event: 4-Board Division 2

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Opponent Rating Result
Olegs Dukalevs 142 ½ - ½
Roger K Noble 134 ½ - ½
Tim M Turner 161 0 - 1
Granville Mellor 108 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

136 = (545 + 400 * (1 - 1)) / 4)

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