Event: Division Four

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Opponent Rating Result
Peter Hodkinson 105 0 - 1
Brian D Hopkins 115 0 - 1
Roger Ball 115 1 - 0
Kevin J Moore 98 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

8 = (433 + 400 * (1 - 2)) / 4)

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