Event: Division 3

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Opponent Rating Result
Jim A Gillespie 1511 1 - 0
Nigel Foster 1617 0 - 1
Paul Silverman 1589 ½ - ½
Mark Tangri 1548 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1466 = (6265 + 400 * (1 - 2)) / 4)

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