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Birmingham & District Chess League
2018/19
Division Three
Event: Division Three
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Excel
Opponent
Rating
Result
Roger Threlfall
131
1 - 0
R (Bob) Hillman
70
1 - 0
Derek Green
102
0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games
234 = (303 + 400 * (2 - 1)) / 3)
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