Event: Billingham Synthonia Rapid February 2024

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Opponent	Rating	Result
Graham R Marshall	1654	0 - 1
Geoffrey Garnett	1339	0 - 1
Michael Smalley	1669	½ - ½

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

1287 = (4662 + 400 * (0 - 2)) / 3)