Event: Baum Trophy summer league

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Opponent Rating Result
Tom A Barton 1855 0 - 1
David Smith 1549 0 - 1
Vladimir Chtym 1470 ½ - ½
Jonathan Newby 1551 ½ - ½
Tom A Barton 1855 0 - 1
David Smith 1549 0 - 1
Vladimir Chtym 1470 1 - 0
Jonathan Newby 1551 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1506 = (12850 + 400 * (2 - 4)) / 8)

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