Event: Open

Opponent Rating Result
Shahab U Quraishi 163 0 - 1
Julian H Summerfield 143 ½ - ½
Ian Emery 173 0 - 1
Frank Wood 145 ½ - ½
Ann-Marie James 175 0 - 1
Roy A Lawrence 146 1 - 0
Shahab U Quraishi 163 ½ - ½
Julian H Summerfield 143 1 - 0
Ian Emery 173 1 - 0
Frank Wood 145 1 - 0
Ann-Marie James 175 ½ - ½
Roy A Lawrence 146 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

224 = (1890 + 400 * (5 - 3)) / 12)

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