Event: Division 1

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Opponent Rating Result
Martyn Hamer 189 ½ - ½
Clive Edwards 0 ½ - ½
John H Schofield 140 1 - 0
Howard R Hughes 190 0 - 1
Clive Edwards 0 1 - 0
Ian Williamson 151 1 - 0
Cliff H Rutlidge 157 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

290 = (827 + 400 * (4 - 1)) / 7)

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