Monthly record of kosaku539's rank (dan/kyu)
month dan/kyu win/lose win ratio
2013 /05 9.00 Kyu 1 win 0 lose 1.00
2013 /04 4.27 Kyu 23 win 29 lose .442
2013 /03 4.24 Kyu 48 win 53 lose .475
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