Event: Silver Rook

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Opponent Rating Result
Anthony Ibbitson 1754 ½ - ½
John George 1758 1 - 0
Charlie Woodbridge 1804 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1905 = (5316 + 400 * (1 - 0)) / 3)

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