Ivshin Sergei
From Kirov, Russia
EMA: 15990412
Common russian riichi rating (CRR)
Rating date Feb. 1, 2021 (latest changes Feb. 1, 2021).
62 place (383.16).
how we calculated rating score
max_coefficients = (4.05 * 0.86 + 2.90 * 1 + 3.85 * 0.71 + 3.45 * 0.71) = 11.585645
p1 = (434.78 * 2.50 * 0.14 + 710.84 * 4.20 * 0.29 + 259.26 * 2.60 * 0.57 + 666.67 * 2.90 * 1 + 0) / (2.50 * 0.14 + 4.20 * 0.29 + 2.60 * 0.57 + 2.90 * 1 + 1) = 479.1705975805255
p2 = (666.67 * 2.90 * 1 + 710.84 * 4.20 * 0.29 + 259.26 * 2.60 * 0.57 + 434.78 * 2.50 * 0.14) / max_coefficients = 287.1484496547236
score = 479.1705975805255 * 0.5 + 287.1484496547236 * 0.5 = 383.1595236176246
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2021-02-01 | 102 -> 62 | 417.17 -> 383.16 | |
| 2020-02-01 | 102 | 417.17 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 667 |
|
14/40 | 100% | 2.90 | EMA | Big open chiitoitsu in a small tenpai |
| 2 | 259 |
|
21/28 | 57% | 2.60 | RR | And yet the sinner collects tanyao |
| 3 | 711 |
|
25/84 | 29% | 4.20 | EMA | Haru Shanten 2019 |
| 4 | 435 |
|
14/24 | 14% | 2.50 | RR | Toi-Toi-man Tournament |
| 5 | 1000 |
|
1/24 | 0% | 1.40 | RR | Seven ryanmens |