Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date May 12, 2024 (latest changes May 12, 2024).

33 place (534.35).

max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 1 + 3.05 * 1) = 15.399999999999999

p1 = (585.59 * 4.05 * 0.14 + 600 * 4.20 * 0.43 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 644.86 * 4.60 * 1) / (4.05 * 0.14 + 4.20 * 0.43 + 3.75 * 1 + 4 * 1 + 4.60 * 1) = 557.4978112705901

p2 = (644.86 * 4.60 * 1 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 600 * 4.20 * 0.43) / max_coefficients = 511.1954545454546

score = 557.4978112705901 * 0.5 + 511.1954545454546 * 0.5 = 534.3466329080223

Rating changes

Show

Date Place Points Reason
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%

2024-04-12 36 466.60 -> 451.24

Moscow Riichi 2022: 29% -> 14%

2024-03-30 33 -> 36 466.60
2024-03-20 34 -> 33 466.60
2024-03-10 25 -> 34 504.29 -> 466.60
2024-03-06 24 -> 25 508.89 -> 504.29

IX Russian Riichi Championship: 71% -> 57%

2024-02-12 22 -> 24 512.28 -> 508.89

Moscow Riichi 2022: 43% -> 29%

2024-01-06 22 516.12 -> 512.28

IX Russian Riichi Championship: 86% -> 71%

2023-12-19 25 -> 22 516.12

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 645 2024-05-12 39/108 100% 4.60 RR X Russian Championship
2 439 2023-09-03 61/108 100% 4.00 RR SPB Riichi Open 2023
3 552 2023-06-11 40/88 100% 3.75 RR Money can not buy tenpai
4 600 2022-11-06 31/76 43% 4.20 RR IX Russian Riichi Championship
5 586 2022-06-12 47/112 14% 4.05 RR Moscow Riichi 2022
6 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"