Event: SCCU County Championship: U1850

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Opponent Rating Result
Peter Grant-Ross 1705 0 - 1
Michael R Wiltshire 1668 ½ - ½
Roger S Scowen 1668 0 - 1
Stephen T Welch 1503 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1536 = (6544 + 400 * (1 - 2)) / 4)

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