Event: Combined Banks and Insurance Chess League 2005-06

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Opponent	Rating	Result
Anthony R Kent	0	0 - 1
Graham P Copeland	0	0 - 1
Ian N Heppell	0	0 - 1
Clive R Wismayer	0	0 - 1
Anthony GC Paish	0	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 5)) / 5)