Event: 6th Somerset New Year Minor

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Opponent	Rating	Result
Lana Boztas	1526	½ - ½
Martyn J Maber	1553	½ - ½
Thomas Booth	1420	1 - 0
Steve Martin	1473	1 - 0
Mathew Walne	1498	0 - 1

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

1574 = (7470 + 400 * (2 - 1)) / 5)