Event: Silver Rook

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Opponent Rating Result
Oliwier Nowaczyk 1702 1 - 0
David W Adam 1750 0 - 1
Randolph E Donahue 1792 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1748 = (5244 + 400 * (1 - 1)) / 3)

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