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Event: U1825 Group A

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Opponent Rating Result
Ian McDonald 152 ½ - ½
Martin P Gawne 152 1 - 0
Hamish D Lyall 152 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

419 = (456 + 400 * (2 - 0)) / 3)

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