Event: 5th Somerset New Year Intermediate

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Opponent	Rating	Result
Martin C Jones	0	1 - 0
Sam Wood	0	½ - ½
Niall Homer	0	1 - 0
Pengxiao Zhu	1335	0 - 1
Brendan O'Gorman	0	1 - 0

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

427 = (1335 + 400 * (3 - 1)) / 5)