Event: Open

Opponent Rating Result
Marek J Soszynski 149 1 - 0
Mike J Hollier 146 1 - 0
Jonathon Vaughan 169 1 - 0
Julian H Summerfield 143 0 - 1
Simon Dighton 180 0 - 1
Shahab U Quraishi 163 ½ - ½
Marek J Soszynski 149 0 - 1
Mike J Hollier 146 1 - 0
Jonathon Vaughan 169 0 - 1
Julian H Summerfield 143 ½ - ½
Simon Dighton 180 ½ - ½
Shahab U Quraishi 163 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

192 = (1900 + 400 * (5 - 4)) / 12)

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