Laptev Alexander
From Kirov, Russia
EMA: 15990462
Common russian riichi rating (CRR)
Rating date Feb. 1, 2021 (latest changes Feb. 1, 2021).
127 place (176.85).
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 = (631.58 * 2.10 * 0.14 + 304.35 * 2.50 * 0.14 + 444.44 * 2.60 * 0.57 + 153.85 * 2.90 * 1 + 0) / (2.10 * 0.14 + 2.50 * 0.14 + 2.60 * 0.57 + 2.90 * 1 + 1) = 232.4498839976303
p2 = (444.44 * 2.60 * 0.57 + 153.85 * 2.90 * 1 + 631.58 * 2.10 * 0.14 + 304.35 * 2.50 * 0.14) / max_coefficients = 121.24400497339595
score = 232.4498839976303 * 0.5 + 121.24400497339595 * 0.5 = 176.84694448551312
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2021-02-01 | 173 -> 127 | 280.50 -> 176.85 | |
| 2020-02-01 | 173 | 280.50 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 154 |
|
34/40 | 100% | 2.90 | EMA | Big open chiitoitsu in a small tenpai |
| 2 | 444 |
|
16/28 | 57% | 2.60 | RR | And yet the sinner collects tanyao |
| 3 | 304 |
|
17/24 | 14% | 2.50 | RR | Toi-Toi-man Tournament |
| 4 | 632 |
|
8/20 | 14% | 2.10 | RR | Fuyu Shanten 2019 |