Event: Division 1

Opponent Rating Result
Daniel M Lambourne 2038 0 - 1
Alun Richards 1696 0 - 1
Ian P Blencowe 1612 ½ - ½
Peter Dhonau 1985 ½ - ½
Alun Richards 1694 ½ - ½
John Jenkins 1947 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1629 = (10972 + 400 * (0 - 3)) / 6)

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