Event: Individual Championship

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Opponent Rating Result
John CH Jones 56 1 - 0
Alun Richards 142 1 - 0
Ian A Robson 193 ½ - ½
Brian Dinter 202 0 - 1
Michael Ashworth 198 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

158 = (791 + 400 * (2 - 2)) / 5)

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