Chekan Vikmar
From Saint Petersburg, Russia
EMA: 15990345
Internal rating (RR)
Rating date Sept. 3, 2025 (latest changes Sept. 3, 2025).
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 223 -> 217 | 32.22 -> 8.03 |
SPB Riichi Open 2023: 14% -> 0% |
| 2025-09-01 | 223 | 31.77 -> 32.22 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 213 -> 223 | 37.91 -> 31.77 |
SPB Riichi Open 2025: 0% -> 100% |
| 2025-08-04 | 213 | 37.79 -> 37.91 | |
| 2025-08-03 | 206 -> 213 | 37.79 | |
| 2025-07-30 | 206 | 37.46 -> 37.79 |
Seihoku spring tournament 2024: 71% -> 57% |
| 2025-07-13 | 202 -> 206 | 37.46 | |
| 2025-07-12 | 202 | 37.22 -> 37.46 | |
| 2025-07-03 | 199 -> 202 | 60.77 -> 37.22 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-15 | 186 -> 199 | 61.41 -> 60.77 | |
| 2025-06-11 | 196 -> 186 | 61.41 | |
| 2025-05-30 | 196 | 60.65 -> 61.41 |
Seihoku spring tournament 2024: 86% -> 71% |
| 2025-05-12 | 196 | 59.73 -> 60.65 | |
| 2025-05-03 | 188 -> 196 | 80.98 -> 59.73 |
SPB Riichi Open 2023: 43% -> 29% |
| 2025-04-27 | 187 -> 188 | 80.98 | |
| 2025-04-26 | 184 -> 187 | 80.98 | |
| 2025-03-30 | 185 -> 184 | 79.94 -> 80.98 |
Seihoku spring tournament 2024: 100% -> 86% |
| 2025-03-03 | 184 -> 185 | 99.49 -> 79.94 |
SPB Riichi Open 2023: 57% -> 43% |
| 2025-03-02 | 181 -> 184 | 99.49 | |
| 2025-02-16 | 174 -> 181 | 99.49 | |
| 2025-02-02 | 168 -> 174 | 99.49 | |
| 2025-01-26 | 159 -> 168 | 99.49 | |
| 2025-01-07 | 156 -> 159 | 99.49 | |
| 2025-01-03 | 153 -> 156 | 117.90 -> 99.49 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-11-06 | 159 -> 153 | 117.90 | |
| 2024-11-03 | 155 -> 159 | 135.34 -> 117.90 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-13 | 142 -> 155 | 136.51 -> 135.34 | |
| 2024-09-06 | 144 -> 142 | 136.51 | |
| 2024-09-03 | 142 -> 144 | 150.94 -> 136.51 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 127 -> 142 | 174.34 -> 150.94 |
SPB Riichi Open 2024: 0% -> 100% |
| 2024-08-11 | 126 -> 127 | 173.65 -> 174.34 | |
| 2024-08-04 | 123 -> 126 | 176.24 -> 173.65 | |
| 2024-07-14 | 119 -> 123 | 176.24 | |
| 2024-07-06 | 121 -> 119 | 176.24 | |
| 2024-06-11 | 129 -> 121 | 173.91 -> 176.24 | |
| 2024-06-09 | 117 -> 129 | 173.91 | |
| 2024-05-12 | 93 -> 117 | 186.43 -> 173.91 | |
| 2024-05-06 | 98 -> 93 | 184.68 -> 186.43 | |
| 2024-04-12 | 99 -> 98 | 184.68 | |
| 2024-03-30 | 37 -> 99 | 465.75 -> 184.68 |
Seihoku spring tournament 2024: 0% -> 100% |
| 2021-02-01 | 36 -> 37 | 593.89 -> 465.75 | |
| 2020-02-01 | 36 | 593.89 |