Event: Rapidplay 2024-25 all-play-all

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Opponent	Rating	Result
Iaroslav Sinkevich	1052	½ - ½
Iaroslav Sinkevich	1124	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1288 = (2176 + 400 * (1 - 0)) / 2)