Ratnikova Anna
From Samara, Russia
EMA: 15990370
Internal rating (RR)
Rating date Dec. 11, 2024 (latest changes Dec. 11, 2024).
40 place (556.65).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (551.72 * 3.75 * 0.43 + 439.25 * 4 * 0.71 + 644.86 * 4.60 * 1 + 329.11 * 3.65 * 1 + 821.05 * 3.85 * 1) / (3.75 * 0.43 + 4 * 0.71 + 4.60 * 1 + 3.65 * 1 + 3.85 * 1) = 571.734648599863
p2 = (821.05 * 3.85 * 1 + 644.86 * 4.60 * 1 + 439.25 * 4 * 0.71 + 329.11 * 3.65 * 1) / max_coefficients = 541.5589905362775
score = 571.734648599863 * 0.5 + 541.5589905362775 * 0.5 = 556.6468195680702
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2024-12-11 | 41 -> 40 | 556.33 -> 556.65 |
Money can not buy tenpai: 57% -> 43% |
2024-11-06 | 40 -> 41 | 556.82 -> 556.33 |
IX Russian Riichi Championship: 14% -> 0% |
2024-11-03 | 40 | 562.66 -> 556.82 |
SPB Riichi Open 2023: 86% -> 71% |
2024-10-13 | 34 -> 40 | 568.43 -> 562.66 | |
2024-10-11 | 34 | 577.11 -> 568.43 |
Money can not buy tenpai: 71% -> 57% |
2024-09-06 | 35 -> 34 | 577.61 -> 577.11 |
IX Russian Riichi Championship: 29% -> 14% |
2024-09-03 | 34 -> 35 | 573.14 -> 577.61 |
SPB Riichi Open 2023: 100% -> 86% |
2024-09-01 | 47 -> 34 | 493.72 -> 573.14 |
SPB Riichi Open 2024: 0% -> 100% |
2024-08-11 | 47 | 501.47 -> 493.72 |
Money can not buy tenpai: 86% -> 71% |
2024-08-04 | 42 -> 47 | 500.23 -> 501.47 |
Riichi over Volga: 0% -> 100% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 821 |
|
18/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
2 | 329 |
|
54/80 | 100% | 3.65 | RR | Riichi over Volga |
3 | 645 |
|
39/108 | 100% | 4.60 | RR | X Russian Championship |
4 | 439 |
|
61/108 | 71% | 4.00 | RR | SPB Riichi Open 2023 |
5 | 552 |
|
40/88 | 43% | 3.75 | RR | Money can not buy tenpai |
6 | 600 |
|
31/76 | 0% | 4.20 | RR | IX Russian Riichi Championship |
7 | 586 |
|
47/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |
8 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |