Event: 6-Board Division 1

Opponent Rating Result
Edward S Oxley 1758 1 - 0
Joseph Catto 1690 0 - 1
Ron V Kemp 1323 1 - 0
Esmond Harding 1330 1 - 0
Joseph Catto 1690 0 - 1
Raymond Martin 1210 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1634 = (9001 + 400 * (4 - 2)) / 6)

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