Medvedev Sergei
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Jan. 7, 2025 (latest changes Jan. 7, 2025).
80 place (440.47).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (735.63 * 3.75 * 0.43 + 903.23 * 1.80 * 1 + 370.79 * 3.75 * 1 + 516.13 * 3.10 * 1 + 0) / (3.75 * 0.43 + 1.80 * 1 + 3.75 * 1 + 3.10 * 1 + 1) = 515.0991583201936
p2 = (903.23 * 1.80 * 1 + 516.13 * 3.10 * 1 + 370.79 * 3.75 * 1 + 735.63 * 3.75 * 0.43) / max_coefficients = 365.8422712933754
score = 515.0991583201936 * 0.5 + 365.8422712933754 * 0.5 = 440.4707148067845
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-07 | 108 -> 80 | 361.70 -> 440.47 |
Moscow Open Riichi Marathon: 0% -> 100% |
| 2025-01-03 | 109 -> 108 | 361.70 | |
| 2024-12-18 | 111 -> 109 | 361.70 | |
| 2024-12-11 | 105 -> 111 | 381.78 -> 361.70 |
Money can not buy tenpai: 57% -> 43% |
| 2024-12-01 | 104 -> 105 | 381.78 | |
| 2024-11-05 | 93 -> 104 | 422.03 -> 381.78 | |
| 2024-11-04 | 92 -> 93 | 422.03 | |
| 2024-11-03 | 93 -> 92 | 422.03 | |
| 2024-10-13 | 99 -> 93 | 386.05 -> 422.03 |
Moscow Riichi 2024: 0% -> 100% |
| 2024-10-11 | 93 -> 99 | 406.02 -> 386.05 |
Money can not buy tenpai: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 516 |
|
16/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon |
| 2 | 371 |
|
57/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 3 | 903 |
|
4/32 | 100% | 1.80 | CRR | "Green Dragon" in the Secret Chamber |
| 4 | 736 |
|
24/88 | 43% | 3.75 | RR | Money can not buy tenpai |
| 5 | 587 |
|
32/76 | 0% | 4.20 | RR | IX Russian Riichi Championship |
| 6 | 360 |
|
72/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |