Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date Jan. 14, 2023 (latest changes Jan. 14, 2023).
62 place (383.71).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 1 + 3.45 * 0.86) = 14.706995
p1 = (600 * 4.20 * 1 + 585.59 * 4.05 * 1 + 0 + 0 + 0) / (4.20 * 1 + 4.05 * 1 + 1 + 1 + 1) = 434.81066666666663
p2 = (600 * 4.20 * 1 + 585.59 * 4.05 * 1) / max_coefficients = 332.6049951060703
score = 434.81066666666663 * 0.5 + 332.6049951060703 * 0.5 = 383.70783088636847
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-01-14 | 61 -> 62 | 383.71 | |
| 2023-01-06 | 62 -> 61 | 383.71 | |
| 2022-12-19 | 62 | 382.11 -> 383.71 | |
| 2022-12-18 | 60 -> 62 | 382.11 | |
| 2022-11-28 | 60 | 378.31 -> 382.11 | |
| 2022-11-06 | 60 | 378.31 |
IX Russian Riichi Championship: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 600 |
|
31/76 | 100% | 4.20 | RR | IX Russian Riichi Championship |
| 2 | 586 |
|
47/112 | 100% | 4.05 | RR | Moscow Riichi 2022 |
| 3 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |
| 4 | 455 |
|
7/12 | 0% | 1.10 | CRR | Mahjong tournament at the Intellectual Games Festival 2017 |