Event: Wahltuch

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Opponent Rating Result
Graham Phythian 1620 ½ - ½
Dan Burgess 1576 1 - 0
Ondrej Chalupa 1829 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1675 = (5025 + 400 * (1 - 1)) / 3)

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