Monthly record of koujioosima's rank (dan/kyu)
month dan/kyu win/lose win ratio
2014 /12 7.00 Kyu 3 win 7 lose .300
2014 /11 2.34 Kyu 39 win 43 lose .475
2014 /10 2.25 Kyu 18 win 21 lose .461
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