Gromova Elena
From Saint Petersburg, Russia
EMA: 15990350
Common russian riichi rating (CRR)
Rating date Sept. 6, 2025 (latest changes Sept. 5, 2025).
91 place (475.40).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (608.70 * 2.10 * 0.57 + 263.16 * 3.85 * 0.86 + 338.98 * 3.25 * 1 + 685.71 * 1.90 * 1 + 611.11 * 2 * 1 + 779.22 * 3.45 * 1) / (2.10 * 0.57 + 3.85 * 0.86 + 3.25 * 1 + 1.90 * 1 + 2 * 1 + 3.45 * 1) = 524.1044982458347
p2 = (779.22 * 3.45 * 1 + 685.71 * 1.90 * 1 + 611.11 * 2 * 1 + 338.98 * 3.25 * 1) / max_coefficients = 426.69459459459455
score = 524.1044982458347 * 0.5 + 426.69459459459455 * 0.5 = 475.3995464202146
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 91 | 476.75 -> 475.40 |
SPB Riichi Open 2023: 14% -> 0% |
| 2025-09-01 | 91 | 466.66 -> 476.75 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 124 -> 91 | 376.26 -> 466.66 |
SPB Riichi Open 2025: 0% -> 100% |
| 2025-08-26 | 125 -> 124 | 376.26 | |
| 2025-08-25 | 127 -> 125 | 376.26 | |
| 2025-08-04 | 130 -> 127 | 374.77 -> 376.26 | |
| 2025-08-03 | 128 -> 130 | 374.77 | |
| 2025-07-30 | 127 -> 128 | 376.62 -> 374.77 |
Seihoku spring tournament 2024: 71% -> 57% |
| 2025-07-26 | 126 -> 127 | 376.62 | |
| 2025-07-19 | 127 -> 126 | 376.62 |