Event: South Cheshire Shield

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Opponent Rating Result
Steve Whatmore 1816 1 - 0
Martin J Burns 1907 0 - 1
Harry Gardiner 1862 0 - 1
David S Johnson 1589 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1694 = (7174 + 400 * (1 - 2)) / 4)

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