Monthly record of Istom's rank (dan/kyu)
| month |
dan/kyu |
win/lose |
win ratio |
| 2024
/05
| 2.58 Dan |
51 win 44 lose |
.536 |
| 2024
/04
| 2.26 Dan |
79 win 79 lose |
.500 |
| 2024
/03
| 2.70 Dan |
66 win 54 lose |
.550 |
| 2024
/02
| 1.91 Dan |
40 win 38 lose |
.512 |
| 2024
/01
| 2.32 Dan |
89 win 85 lose |
.511 |
| 2023
/12
| 2.33 Dan |
75 win 69 lose |
.520 |
| 2023
/11
| 2.41 Dan |
91 win 73 lose |
.554 |
| 2023
/10
| 1.44 Dan |
39 win 45 lose |
.464 |
| 2023
/08
| 2.20 Dan |
134 win 120 lose |
.527 |
| 2023
/07
| 2.66 Dan |
73 win 58 lose |
.557 |
| 2023
/06
| 2.32 Dan |
66 win 58 lose |
.532 |
| 2023
/05
| 2.40 Dan |
103 win 79 lose |
.565 |
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