Event: John Swan Trophy

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Opponent Rating Result
Heather Enid Walker 1125 1 - 0
Alexander New 1879 0 - 1
Stephen Livermore 1573 1 - 0
Jeff R Dawson 1734 1 - 0
Mervyn J Hughes 1774 1 - 0
Martin G Walker 2208 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1849 = (10293 + 400 * (4 - 2)) / 6)

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