Monthly record of mayumi66's rank (dan/kyu)
month dan/kyu win/lose win ratio
2017 /08 5.00 Kyu 5 win 3 lose .625
2017 /07 0.33 Kyu 98 win 75 lose .566
2017 /06 0.96 Kyu 55 win 55 lose .500
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