Event: Division 2

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Opponent Rating Result
Robert Fell 1660 0 - 1
Andrew Mowat 1791 0 - 1
David W Fone 1581 1 - 0
Leslie Andrews 1511 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1536 = (6543 + 400 * (1 - 2)) / 4)

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