Event: IM Brown Shield

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Opponent Rating Result
Andrew C Wainwright 1976 1 - 0
Alan J Walton 2112 1 - 0
Martyn Hamer 2159 0 - 1
Peter Shaw 2100 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2187 = (8347 + 400 * (2 - 1)) / 4)

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