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Sheffield & District Chess Association
2019-20
400 League
Event: 400 League
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Excel
Opponent
Rating
Result
Tom Brooman
80
0 - 1
Patrick Guest
80
1 - 0
R (Bob) Lindsay
90
0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games
-50 = (250 + 400 * (1 - 2)) / 3)
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