Monthly record of katamaterial's rank (dan/kyu)
month dan/kyu win/lose win ratio
2021 /01 9.00 Kyu 1 win 1 lose .500
2020 /12 5.42 Kyu 9 win 10 lose .473
2020 /11 5.09 Kyu 27 win 36 lose .428
2020 /10 5.48 Kyu 20 win 33 lose .377
2020 /09 5.39 Kyu 17 win 36 lose .320
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