Medvedev Sergei
From Moscow, Russia
Internal rating (RR)
Rating date June 15, 2025 (latest changes June 15, 2025).
159 place (247.39).
how we calculated rating score
max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266
p1 = (370.79 * 3.75 * 1 + 516.13 * 3.10 * 1 + 0 + 0 + 0) / (3.75 * 1 + 3.10 * 1 + 1 + 1 + 1) = 303.5989847715736
p2 = (516.13 * 3.10 * 1 + 370.79 * 3.75 * 1) / max_coefficients = 191.17272893484866
score = 303.5989847715736 * 0.5 + 191.17272893484866 * 0.5 = 247.38585685321112
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-06-15 | 146 -> 159 | 250.22 -> 247.39 | |
| 2025-06-11 | 136 -> 146 | 291.70 -> 250.22 |
Money can not buy tenpai: 14% -> 0% |
| 2025-06-08 | 135 -> 136 | 291.70 | |
| 2025-05-12 | 136 -> 135 | 287.08 -> 291.70 | |
| 2025-05-03 | 133 -> 136 | 287.08 | |
| 2025-04-26 | 129 -> 133 | 287.08 | |
| 2025-04-11 | 124 -> 129 | 309.63 -> 287.08 |
Money can not buy tenpai: 29% -> 14% |
| 2025-03-03 | 125 -> 124 | 309.63 | |
| 2025-03-02 | 122 -> 125 | 309.63 | |
| 2025-02-16 | 115 -> 122 | 309.63 |
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 | 736 |
|
24/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |
| 4 | 587 |
|
32/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm |
| 5 | 360 |
|
72/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |