Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date April 19, 2023 (latest changes April 19, 2023).
53 place (391.49).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 0.86 + 2.80 * 1) = 14.04985
p1 = (585.59 * 4.05 * 1 + 600 * 4.20 * 1 + 0 + 0 + 0) / (4.05 * 1 + 4.20 * 1 + 1 + 1 + 1) = 434.81066666666663
p2 = (600 * 4.20 * 1 + 585.59 * 4.05 * 1) / max_coefficients = 348.1617241465211
score = 434.81066666666663 * 0.5 + 348.1617241465211 * 0.5 = 391.4861954065939
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-04-19 | 54 -> 53 | 391.49 | |
2023-03-28 | 57 -> 54 | 391.49 | |
2023-03-20 | 58 -> 57 | 385.50 -> 391.49 | |
2023-03-06 | 60 -> 58 | 385.50 | |
2023-02-25 | 59 -> 60 | 385.50 | |
2023-02-19 | 61 -> 59 | 385.50 | |
2023-01-28 | 61 | 383.71 -> 385.50 | |
2023-01-14 | 60 -> 61 | 383.71 | |
2023-01-06 | 61 -> 60 | 383.71 | |
2022-12-19 | 61 | 382.11 -> 383.71 |
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 |