Medvedev Sergei
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date March 30, 2023 (latest changes March 28, 2023).
80 place (314.00).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 0.86 + 2.80 * 1) = 14.04985
p1 = (360.36 * 4.05 * 1 + 586.67 * 4.20 * 1 + 0 + 0 + 0) / (4.05 * 1 + 4.20 * 1 + 1 + 1 + 1) = 348.752
p2 = (586.67 * 4.20 * 1 + 360.36 * 4.05 * 1) / max_coefficients = 279.2528034107126
score = 348.752 * 0.5 + 279.2528034107126 * 0.5 = 314.0024017053563
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-03-28 | 81 -> 80 | 314.00 | |
| 2023-03-20 | 82 -> 81 | 309.20 -> 314.00 | |
| 2023-03-06 | 83 -> 82 | 309.20 | |
| 2023-02-25 | 78 -> 83 | 309.20 | |
| 2023-01-28 | 80 -> 78 | 307.76 -> 309.20 | |
| 2023-01-14 | 78 -> 80 | 307.76 | |
| 2023-01-03 | 80 -> 78 | 307.76 | |
| 2022-12-19 | 81 -> 80 | 306.48 -> 307.76 | |
| 2022-12-18 | 80 -> 81 | 306.48 | |
| 2022-11-28 | 80 | 303.44 -> 306.48 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 587 |
|
32/76 | 100% | 4.20 | RR | IX Russian Riichi Championship |
| 2 | 360 |
|
72/112 | 100% | 4.05 | RR | Moscow Riichi 2022 |