Event: U1650 Cup

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Opponent Rating Result
Marek Ciorga 1555 ½ - ½
Hugo Smith 1479 ½ - ½
Martyn Colebrook 1508 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1381 = (4542 + 400 * (0 - 1)) / 3)

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