Monthly record of yama1640's rank (dan/kyu)
month dan/kyu win/lose win ratio
2019 /02 3.62 Kyu 7 win 7 lose .500
2019 /01 3.36 Kyu 19 win 18 lose .513
2018 /12 3.35 Kyu 17 win 18 lose .485
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