Event: Ipswich Chess Club Championship

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Opponent	Rating	Result
Angus Irving	1792	0 - 1
Grzegorz Sternik	0	1 - 0
John Broadwater	0	1 - 0

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

731 = (1792 + 400 * (2 - 1)) / 3)