Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

Rating date June 19, 2023 (latest changes June 19, 2023).

36 place (479.50).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 2.80 * 1) = 14.221255

p1 = (585.59 * 4.05 * 0.86 + 600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 0 + 0) / (4.05 * 0.86 + 4.20 * 1 + 3.75 * 1 + 1 + 1) = 493.3733842326966

p2 = (600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 585.59 * 4.05 * 0.86) / max_coefficients = 465.6192438712336

score = 493.3733842326966 * 0.5 + 465.6192438712336 * 0.5 = 479.4963140519651

Rating changes

Show

all results
Date Place Points Reason
2023-06-12 37 -> 36 483.75 -> 479.50

Moscow Riichi 2022: 100% -> 86%
2023-06-11 55 -> 37 397.91 -> 483.75

Money can not buy tenpai: 0% -> 100%
2023-05-20 56 -> 55 391.49 -> 397.91
2023-05-06 55 -> 56 391.49
2023-05-01 54 -> 55 391.49
2023-04-19 55 -> 54 391.49
2023-03-28 58 -> 55 391.49
2023-03-20 59 -> 58 385.50 -> 391.49
2023-03-06 61 -> 59 385.50
2023-02-25 60 -> 61 385.50

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 552 2023-06-11 40/88 100% 3.75 RR Money can not buy tenpai
2 600 2022-11-06 31/76 100% 4.20 RR IX Russian Riichi Championship
3 586 2022-06-12 47/112 86% 4.05 RR Moscow Riichi 2022
4 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"
5 455 2017-02-26 7/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017