Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date May 28, 2023 (latest changes May 28, 2023).
54 place (397.91).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 2.80 * 1 + 3.50 * 0.71) = 13.55005
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 = 361.0038339341921
score = 434.81066666666663 * 0.5 + 361.0038339341921 * 0.5 = 397.9072503004294
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-05-20 | 55 -> 54 | 391.49 -> 397.91 | |
2023-05-06 | 54 -> 55 | 391.49 | |
2023-05-01 | 53 -> 54 | 391.49 | |
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 |
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 |