Event: Division B

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Opponent Rating Result
Brian J Spear 1739 ½ - ½
Mark D McWilliams 1498 1 - 0
Vincenzo Nicosia 1692 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1643 = (4929 + 400 * (1 - 1)) / 3)

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