Medvedev Sergei
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).
141 place (330.80).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (516.13 * 3.10 * 1 + 903.23 * 1.80 * 0.57 + 370.79 * 3.75 * 1 + 0 + 0) / (3.10 * 1 + 1.80 * 0.57 + 3.75 * 1 + 1 + 1) = 396.76388770787526
p2 = (516.13 * 3.10 * 1 + 370.79 * 3.75 * 1 + 903.23 * 1.80 * 0.57) / max_coefficients = 264.827027027027
score = 396.76388770787526 * 0.5 + 264.827027027027 * 0.5 = 330.79545736745115
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-10-04 | 142 -> 141 | 330.80 | |
2025-09-19 | 138 -> 142 | 345.07 -> 330.80 |
"Green Dragon" in the Secret Chamber: 71% -> 57% |
2025-09-12 | 139 -> 138 | 345.07 | |
2025-09-05 | 140 -> 139 | 345.07 | |
2025-09-03 | 142 -> 140 | 345.07 | |
2025-09-01 | 144 -> 142 | 341.38 -> 345.07 | |
2025-08-31 | 141 -> 144 | 341.38 | |
2025-08-26 | 142 -> 141 | 341.38 | |
2025-08-04 | 142 | 340.04 -> 341.38 | |
2025-08-03 | 140 -> 142 | 340.04 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
---|---|---|---|---|---|---|---|---|---|
1 | 516 |
|
16/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
2 | 371 |
|
57/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
3 | 903 |
|
4/32 | 57% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
4 | 736 |
|
24/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
5 | 587 |
|
32/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
6 | 360 |
|
72/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |