Event: Brewood Chess Circle Club Championship

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Opponent Rating Result
Greg Rochester 1943 1 - 0
Stephen A Bird 1290 ½ - ½
Thomas Binns 1598 1 - 0
John Sewell 1437 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1667 = (6268 + 400 * (2 - 1)) / 4)

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