Event: Division 2

Opponent Rating Result
Chris W Heath 158 1 - 0
Andrew J Briggs 171 1 - 0
Alex Von Der Becke 142 ½ - ½
Michael J Hamilton 169 ½ - ½
David W Fryer 167 0 - 1
Mark C Attree 138 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

291 = (945 + 400 * (3 - 1)) / 6)

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