Event: 1st Cornwall Online Summer Congress

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Opponent	Rating	Result
Ian Renshaw	1445	1 - 0
Ian Renshaw	1445	1 - 0
Christine F Constable	1560	1 - 0
Christine F Constable	1560	1 - 0
Nigel J Kirkman	1637	0 - 1
Nigel J Kirkman	1637	0 - 1
Lloyd Russell	1157	1 - 0
Lloyd Russell	1157	1 - 0
Daniel Miller	0	0 - 1
Daniel Miller	0	0 - 1

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

1240 = (11598 + 400 * (6 - 4)) / 10)