Event: IM Brown Shield

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Opponent Rating Result
Gary Corcoran 1736 1 - 0
Peter Micklethwaite 2003 0 - 1
Vivien Webster 1688 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1809 = (5427 + 400 * (1 - 1)) / 3)

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