Event: 6th Somerset New Year Major

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Opponent Rating Result
Benjamin Lappin 1943 0 - 1
Freddie Sugden 1758 ½ - ½
Robert C Stern 1980 ½ - ½
Stephen Tatlow 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1420 = (5681 + 400 * (1 - 1)) / 4)

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