Event: Ipswich Chess Club Championship

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Opponent	Rating	Result
Gary Kilpatrick	1400	1 - 0
Tom Gordon	1772	0 - 1
Ken Lunn	1542	0 - 1

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

1438 = (4714 + 400 * (1 - 2)) / 3)