Gromova Elena
From Saint Petersburg, Russia
EMA: 15990350
Common russian riichi rating (CRR)
Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).
86 place (474.54).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (611.11 * 2 * 1 + 608.70 * 2.10 * 0.43 + 263.16 * 3.85 * 0.86 + 779.22 * 3.45 * 1 + 338.98 * 3.25 * 1 + 685.71 * 1.90 * 1) / (2 * 1 + 2.10 * 0.43 + 3.85 * 0.86 + 3.45 * 1 + 3.25 * 1 + 1.90 * 1) = 522.3901926331234
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 = 522.3901926331234 * 0.5 + 426.69459459459455 * 0.5 = 474.54239361385896
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-10-04 | 88 -> 86 | 474.54 | |
| 2025-09-30 | 86 -> 88 | 475.40 -> 474.54 |
Seihoku spring tournament 2024: 57% -> 43% |
| 2025-09-26 | 87 -> 86 | 475.40 | |
| 2025-09-14 | 88 -> 87 | 475.40 | |
| 2025-09-12 | 90 -> 88 | 475.40 | |
| 2025-09-10 | 91 -> 90 | 475.40 | |
| 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 |