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Worcestershire Chess Association
2023-4
Dudley & District League Div 2
Event: Dudley & District League Div 2
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Excel
Opponent
Rating
Result
Keith Thomas
1720
1 - 0
Geoffrey C Rosser
1647
0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games
1684 = (3367 + 400 * (1 - 1)) / 2)
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