Ratnikova Anna
From Samara, Russia
EMA: 15990370
Internal rating (RR)
Rating date Sept. 3, 2024 (latest changes Sept. 3, 2024).
35 place (577.61).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284
p1 = (600 * 4.20 * 0.29 + 551.72 * 3.75 * 0.71 + 439.25 * 4 * 0.86 + 644.86 * 4.60 * 1 + 329.11 * 3.65 * 1 + 821.05 * 3.85 * 1) / (4.20 * 0.29 + 3.75 * 0.71 + 4 * 0.86 + 4.60 * 1 + 3.65 * 1 + 3.85 * 1) = 568.4778634887011
p2 = (821.05 * 3.85 * 1 + 644.86 * 4.60 * 1 + 439.25 * 4 * 0.86 + 551.72 * 3.75 * 0.71) / max_coefficients = 586.7442878854229
score = 568.4778634887011 * 0.5 + 586.7442878854229 * 0.5 = 577.611075687062
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
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% |
2024-07-14 | 38 -> 42 | 500.23 | |
2024-07-06 | 36 -> 38 | 514.09 -> 500.23 |
IX Russian Riichi Championship: 43% -> 29% |
2024-06-11 | 36 | 534.35 -> 514.09 |
Money can not buy tenpai: 100% -> 86% |
2024-06-09 | 33 -> 36 | 534.35 | |
2024-05-12 | 36 -> 33 | 438.94 -> 534.35 |
X Russian Championship: 0% -> 100% |
2024-05-06 | 36 | 451.24 -> 438.94 |
IX Russian Riichi Championship: 57% -> 43% |
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 | 86% | 4.00 | RR | SPB Riichi Open 2023 |
5 | 552 |
|
40/88 | 71% | 3.75 | RR | Money can not buy tenpai |
6 | 600 |
|
31/76 | 29% | 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" |