Event: IM Brown Shield

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Opponent	Rating	Result
Herbert Lockwood	1606	0 - 1
Clive W Davies	1851	0 - 1
R Malcolm Hara	1591	½ - ½
Neil Griffiths	1570	1 - 0
Dave Colledge	1698	1 - 0
Richard Wilson	1601	1 - 0
Dominic Lodge	1660	0 - 1
Lewis Walker	1446	1 - 0

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

1678 = (13023 + 400 * (4 - 3)) / 8)