Event: u1850 County Championship

Opponent Rating Result
Trevor J Ansell 1845 0 - 1
Alan Watkins 1830 ½ - ½
Peter Barkas 1805 1 - 0
Trevor J Ansell 1845 ½ - ½
Stephen W Ruthen 1843 0 - 1
Neil Greenwood 1825 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1832 = (10993 + 400 * (2 - 2)) / 6)

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