Mamin Vladislav
From Saint Petersburg, Russia
EMA: 15990329
Common russian riichi rating (CRR)
Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).
192 place (238.64).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (833.33 * 2 * 1 + 521.74 * 2.10 * 0.43 + 115.79 * 3.85 * 0.86 + 0 + 0) / (2 * 1 + 2.10 * 0.43 + 3.85 * 0.86 + 1 + 1) = 307.12100581775746
p2 = (833.33 * 2 * 1 + 521.74 * 2.10 * 0.43 + 115.79 * 3.85 * 0.86) / max_coefficients = 170.15945945945947
score = 307.12100581775746 * 0.5 + 170.15945945945947 * 0.5 = 238.64023263860847
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-10-09 | 193 -> 192 | 238.64 | |
2025-09-30 | 190 -> 193 | 247.71 -> 238.64 |
Seihoku spring tournament 2024: 57% -> 43% |
2025-09-14 | 192 -> 190 | 247.71 | |
2025-09-05 | 193 -> 192 | 247.71 | |
2025-09-03 | 196 -> 193 | 247.71 | |
2025-09-01 | 198 -> 196 | 241.38 -> 247.71 |
SPB Riichi Open 2024: 100% -> 86% |
2025-08-31 | 196 -> 198 | 241.38 | |
2025-08-25 | 197 -> 196 | 241.38 | |
2025-08-22 | 198 -> 197 | 241.38 | |
2025-08-09 | 199 -> 198 | 241.38 |