Event: LCA Division 1

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Opponent Rating Result
David H Coates 172 0 - 1
Joe Kilshaw 181 0 - 1
Keith J Palmer 161 ½ - ½
Andreas Sivacenko 156 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

68 = (670 + 400 * (1 - 2)) / 4)

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