Medvedev Sergei
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date May 20, 2025 (latest changes May 19, 2025).
110 place (397.88).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (735.63 * 3.75 * 0.14 + 903.23 * 1.80 * 0.86 + 370.79 * 3.75 * 1 + 516.13 * 3.10 * 1 + 0) / (3.75 * 0.14 + 1.80 * 0.86 + 3.75 * 1 + 3.10 * 1 + 1) = 481.2474600033943
p2 = (516.13 * 3.10 * 1 + 903.23 * 1.80 * 0.86 + 370.79 * 3.75 * 1 + 735.63 * 3.75 * 0.14) / max_coefficients = 314.50318772354547
score = 481.2474600033943 * 0.5 + 314.50318772354547 * 0.5 = 397.8753238634699
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-05-19 | 105 -> 110 | 410.85 -> 397.88 |
"Green Dragon" in the Secret Chamber: 100% -> 86% |
| 2025-05-17 | 104 -> 105 | 410.85 | |
| 2025-05-12 | 104 | 404.01 -> 410.85 | |
| 2025-05-03 | 100 -> 104 | 404.01 | |
| 2025-04-27 | 97 -> 100 | 404.01 | |
| 2025-04-26 | 96 -> 97 | 404.01 | |
| 2025-04-25 | 97 -> 96 | 404.01 | |
| 2025-04-11 | 93 -> 97 | 422.52 -> 404.01 |
Money can not buy tenpai: 29% -> 14% |
| 2025-03-10 | 94 -> 93 | 422.52 | |
| 2025-03-03 | 93 -> 94 | 422.52 |
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 | 86% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov |
| 4 | 736 |
|
24/88 | 14% | 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 |