Event: 4-Board Division 2

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Opponent	Rating	Result
Tim M Turner	167	½ - ½
Andrew D Bettley	153	1 - 0
Oleg Dukalev	144	1 - 0

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

421 = (464 + 400 * (2 - 0)) / 3)