Event: Eastman Cup

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Opponent Rating Result
Philip J Makepeace 2187 1 - 0
Alexander Cherniaev 2488 ½ - ½
Elmira Mirzoeva 412 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1696 = (5087 + 400 * (1 - 1)) / 3)

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