Event: Westminster

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Opponent Rating Result
Harry Z Zheng 2224 ½ - ½
Amina Gadzhieva 0 1 - 0
Eugenia Karas 1941 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1655 = (4165 + 400 * (2 - 0)) / 3)

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