Event: Guildford FIDE Congress

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Opponent	Rating	Result
Harry M Carter	0	½ - ½
Garfield Moore	0	½ - ½
William Golding	0	½ - ½
Ian S Comley	0	0 - 1
Niclas Hordnes	0	½ - ½

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

-80 = (0 + 400 * (0 - 1)) / 5)