Event: City Chess Swiss 2023-24

Opponent Rating Result
D Ian Calvert 2025 ½ - ½
Mehmet Alper Dincer 0 ½ - ½
Vladimir Shmarov 1589 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1338 = (3614 + 400 * (1 - 0)) / 3)

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