Event: Individual Rapidplay

Opponent Rating Result
Jim Beaty 1904 0 - 1
Steve Whitehead 1750 0 - 1
David Horton 1361 1 - 0
David Lacey 1752 ½ - ½
Alun Richards 1734 ½ - ½
Thomas Brown 1355 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1509 = (9856 + 400 * (1 - 3)) / 6)

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