Monthly record of Ervinw's rank (dan/kyu)
month dan/kyu win/lose win ratio
2023 /06 8.00 Kyu 2 win 3 lose .400
2020 /05 10 Kyu 0 win 1 lose .000
2020 /02 9.00 Kyu 1 win 0 lose 1.00
2019 /11 8.00 Kyu 2 win 0 lose 1.00
2019 /06 7.00 Kyu 3 win 3 lose .500
2019 /05 3.61 Kyu 20 win 30 lose .400
2019 /04 2.45 Kyu 38 win 36 lose .513
2019 /03 3.29 Kyu 37 win 46 lose .445
2019 /02 6.00 Kyu 4 win 15 lose .210
2019 /01 10 Kyu 0 win 1 lose .000
2018 /12 9.00 Kyu 1 win 2 lose .333
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