Event: Division Three

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Opponent Rating Result
Robert J Purcell 1722 0 - 1
Waleed Tahir 1735 1 - 0
Michael Share 1729 ½ - ½
Paul B Sharratt 1721 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1827 = (6907 + 400 * (2 - 1)) / 4)

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