Medvedev Sergei
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date March 11, 2026 (latest changes March 10, 2026).
105 place (422.26).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (903.23 * 1.80 * 0.29 + 370.79 * 3.75 * 0.57 + 516.13 * 3.10 * 0.71 + 766.67 * 3 * 1 + 0) / (1.80 * 0.29 + 3.75 * 0.57 + 3.10 * 0.71 + 3 * 1 + 1) = 530.0067408080403
p2 = (766.67 * 3 * 1 + 516.13 * 3.10 * 0.71 + 370.79 * 3.75 * 0.57 + 903.23 * 1.80 * 0.29) / max_coefficients = 314.5063545150502
score = 530.0067408080403 * 0.5 + 314.5063545150502 * 0.5 = 422.25654766154526
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-03-10 | 106 -> 105 | 422.26 | |
| 2026-03-07 | 104 -> 106 | 429.57 -> 422.26 |
Moscow Open Riichi Marathon: 86% -> 71% |
| 2026-03-02 | 103 -> 104 | 429.57 | |
| 2026-03-01 | 105 -> 103 | 429.57 | |
| 2026-02-27 | 106 -> 105 | 429.57 | |
| 2026-02-23 | 100 -> 106 | 429.57 | |
| 2026-02-13 | 99 -> 100 | 431.90 -> 429.57 |
Moscow Riichi 2024: 71% -> 57% |
| 2026-02-09 | 98 -> 99 | 431.90 | |
| 2026-02-08 | 96 -> 98 | 431.90 | |
| 2026-02-04 | 97 -> 96 | 431.90 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 767 |
|
8/31 | 100% | 3.00 | RR | Moscow Open Riichi Marathon 2026 | Moscow | |
| 2 | 516 |
|
16/32 | 71% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
| 3 | 371 |
|
57/90 | 57% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 903 |
|
4/32 | 29% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 5 | 736 |
|
24/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 6 | 587 |
|
32/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 7 | 360 |
|
72/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |