Event: Maidstone Club Championship (22/23)

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Opponent	Rating	Result
Robert E Lane	1773	0 - 1
Cliff R Chandler	2274	0 - 1
David A Munford	1908	½ - ½

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

1718 = (5955 + 400 * (0 - 2)) / 3)