Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

Rating date June 9, 2024 (latest changes June 9, 2024).

47 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
2024-06-09 42 -> 47 534.35
2024-05-25 41 -> 42 534.35
2024-05-12 61 -> 41 427.07 -> 534.35

X Russian Championship: 0% -> 100%

2024-05-06 57 -> 61 443.49 -> 427.07

IX Russian Riichi Championship: 57% -> 43%

2024-05-05 56 -> 57 443.49
2024-04-27 57 -> 56 443.49
2024-04-25 58 -> 57 443.49
2024-04-22 59 -> 58 443.49
2024-04-12 54 -> 59 458.38 -> 443.49

Moscow Riichi 2022: 29% -> 14%

2024-03-30 50 -> 54 458.38

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"
7 455 2017-02-26 7/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017