Event: June Swiss

Opponent Rating Result
Mervyn J Hughes 1851 0 - 1
Stephen F Crane 1427 1 - 0
Larysa Klepikovska 1489 1 - 0
Andrew D Hartland 1813 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1645 = (6580 + 400 * (2 - 2)) / 4)

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